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基于零维杂化锑基氯化物的可逆荧光发射转化
| 更新时间：2022-11-15
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基于零维杂化锑基氯化物的可逆荧光发射转化 增强出版
- Reversible Emission Transformations in Zero-Dimensional Hybrid Antimony Chlorides
- 发光学报 2022年 null卷 第null期 (2022)
- 作者机构：南方科技大学 化学系,广东,深圳,518055;聊城大学 山东省光通信科学与技术重点实验室,山东,聊城,252000;松山湖材料实验室 前沿科学研究-功能配位材料团队,广东,东莞,523808
- 作者简介：
- 基金信息：National Natural Science Foundation of China(52072166);Guangdong Science and Technology Department(2022A1515010918);Shenzhen Science and Technology Innovation Committee(KQTD2016053019134356;RCJC2021060910444106)
- DOI：10.37188/CJL.20220357 中图分类号： O482.31
-
网络出版日期：2022-11-15，
收稿日期：2022-09-29，
修回日期：2022-10-17，
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引用本文
谭丽,罗志山,李茜等.基于零维杂化锑基氯化物的可逆荧光发射转化[J].发光学报,
TAN Li,LUO Zhishan,LI Qian,et al.Reversible Emission Transformations in Zero-Dimensional Hybrid Antimony Chlorides[J].Chinese Journal of Luminescence,
谭丽,罗志山,李茜等.基于零维杂化锑基氯化物的可逆荧光发射转化[J].发光学报, DOI：10.37188/CJL.20220357
TAN Li,LUO Zhishan,LI Qian,et al.Reversible Emission Transformations in Zero-Dimensional Hybrid Antimony Chlorides[J].Chinese Journal of Luminescence, DOI：10.37188/CJL.20220357
基于零维杂化锑基氯化物的可逆荧光发射转化 增强出版
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"data": "分别呈现出由自陷态激子发射的红色和黄色的单峰宽带光谱。此外，当用高能量光子（如310nm）激发时，"
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"text": "1-3",
"type": "bibr"
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"data": "]"
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]
},
{
"name": "text",
"data": " photodetectors,"
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"data": [
{
"name": "text",
"data": "["
},
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"data": [
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"data": {
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"text": "6",
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"data": " lasers"
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{
"name": "sup",
"data": [
{
"name": "text",
"data": "["
},
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"name": "xref",
"data": {
"text": "7",
"type": "bibr",
"rid": "R7",
"data": [
{
"name": "text",
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"data": ", "
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"data": "8"
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]
},
{
"name": "text",
"data": " and photovoltaics."
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{
"name": "text",
"data": "["
},
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"data": {
"data": [
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"type": "bibr"
}
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"name": "text",
"data": "]"
}
]
},
{
"name": "text",
"data": " Based on the spatial arrangement of ionic metal-halide polyhedral building blocks and the surrounding organic cation species, HMHs can be classified into three- (3D), two- (2D), one- (1D) and zero-dimensional (0D) materials. In 0D HMHs, the individual inorganic metal halide polyhedra are completely isolated and surrounded by bulky organic cations to assemble unique host-guest systems. These light-emitting metal halide building blocks periodically embed into the wide bandgap organic cation matrix in 0D HMHs, and then excitons tend to be confined in the individual metal halide polyhedra upon photoexcitation, which facilitates the formation of self-trapped excitons (STEs). In general, the STE emission features strongly Stokes shifted broadband photoluminescence (PL), high photoluminescence quantum yields (PLQYs) ."
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "["
},
{
"name": "xref",
"data": {
"text": "12",
"type": "bibr",
"rid": "R12",
"data": [
{
"name": "text",
"data": "12"
}
]
}
},
{
"name": "text",
"data": ", "
},
{
"name": "xref",
"data": {
"text": "13",
"type": "bibr",
"rid": "R13",
"data": [
{
"name": "text",
"data": "13"
}
]
}
},
{
"name": "text",
"data": "]"
}
]
}
]
},
{
"name": "p",
"data": [
{
"name": "text",
"data": "Dual-band emission composed of a broad low-energy (LE) band originating from STEs and an additional narrow high-energy (HE) band from free excitons (FEs) have been reported in 2D and 1D HMHs, which makes it easier to achieve a broad white-light emission."
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "["
},
{
"name": "blockXref",
"data": {
"data": [
{
"name": "xref",
"data": {
"text": "14",
"type": "bibr",
"rid": "R14",
"data": [
{
"name": "text",
"data": "14"
}
]
}
},
{
"name": "text",
"data": "-"
},
{
"name": "xref",
"data": {
"text": "16",
"type": "bibr",
"rid": "R16",
"data": [
{
"name": "text",
"data": "16"
}
]
}
}
],
"rid": [
"R14",
"R15",
"R16"
],
"text": "14-16",
"type": "bibr"
}
},
{
"name": "text",
"data": "]"
}
]
},
{
"name": "text",
"data": " However, FE emission is rarely observed in 0D HMHs due to the strong exciton confinement effect. Therefore, most of 0D HMHs exhibit only single LE emission band, which limits the formation of dual-band emission to achieve the white-light emission."
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "["
},
{
"name": "xref",
"data": {
"text": "17",
"type": "bibr",
"rid": "R17",
"data": [
{
"name": "text",
"data": "17"
}
]
}
},
{
"name": "text",
"data": "]"
}
]
},
{
"name": "text",
"data": " Recently, dual-band emissions have been reported in 0D Sb-based metal halide (TTA)"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "2"
}
]
},
{
"name": "text",
"data": "SbCl"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "5"
}
]
},
{
"name": "text",
"data": " (TTA = tetraethylammonium) and (TEBA)"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "2"
}
]
},
{
"name": "text",
"data": "SbCl"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "5"
}
]
},
{
"name": "text",
"data": "(TEBA=benzyltriethylammonium),where the LE emission band covering the orange/yellow spectral range and an additional HE emission band covering the blue spectral range were observed upon HE photons (e.g., 300 nm) excitation, exhibiting ultra-broad white-light emissions. The dual-band emission has been assigned to the singlet and triplet STE emissions."
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "["
},
{
"name": "xref",
"data": {
"text": "18",
"type": "bibr",
"rid": "R18",
"data": [
{
"name": "text",
"data": "18"
}
]
}
},
{
"name": "text",
"data": "]"
}
]
},
{
"name": "text",
"data": " Compared with triplet STE emission, where the strongly Stokes shift broadband emission has a long lifetime (e.g., tens or hundreds of microseconds), singlet STE emission shows a relatively narrow emission band with a fast decay process (e.g., nanoseconds). The dual-band emission in 0D HMHs exhibits potential applications in white-light solid-state lighting."
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "["
},
{
"name": "xref",
"data": {
"text": "19",
"type": "bibr",
"rid": "R19",
"data": [
{
"name": "text",
"data": "19"
}
]
}
},
{
"name": "text",
"data": ", "
},
{
"name": "xref",
"data": {
"text": "20",
"type": "bibr",
"rid": "R20",
"data": [
{
"name": "text",
"data": "20"
}
]
}
},
{
"name": "text",
"data": "]"
}
]
}
]
},
{
"name": "p",
"data": [
{
"name": "text",
"data": "On the other hand, the PL emissions in 0D HMHs arising from individual metal halide building blocks are susceptible to the surrounding environments. Solvent molecules are one of the most facile strategies to influence the PL properties in 0D HMHs. The small molecules could insert into the crystalline lattices during crystallization, which affects the interaction between metal halides."
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "["
},
{
"name": "xref",
"data": {
"text": "21",
"type": "bibr",
"rid": "R21",
"data": [
{
"name": "text",
"data": "21"
}
]
}
},
{
"name": "text",
"data": "]"
}
]
},
{
"name": "text",
"data": " For example, the PLQY of (C"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "6"
}
]
},
{
"name": "text",
"data": "N"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "2"
}
]
},
{
"name": "text",
"data": "H"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "16"
}
]
},
{
"name": "text",
"data": ")SbCl"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "5"
}
]
},
{
"name": "text",
"data": "⋅H"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "2"
}
]
},
{
"name": "text",
"data": "O"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": " "
}
]
},
{
"name": "text",
"data": "realized obvious enhancement by incorporation of water molecules into (C"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "6"
}
]
},
{
"name": "text",
"data": "N"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "2"
}
]
},
{
"name": "text",
"data": "H"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "16"
}
]
},
{
"name": "text",
"data": ")SbCl"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "5"
}
]
},
{
"name": "text",
"data": ", which was ascribed to the formation of more localized photoelectrons resulted from the increased distance between polyhedra."
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "["
},
{
"name": "xref",
"data": {
"text": "22",
"type": "bibr",
"rid": "R22",
"data": [
{
"name": "text",
"data": "22"
}
]
}
},
{
"name": "text",
"data": "]"
}
]
},
{
"name": "text",
"data": " However, the PL switching mechanisms of small molecules on the single- and dual-band emissions in 0D HMHs is still unclear. It is of significance to develop 0D HMHs with tunable white-light emissions and uncover the underlying structure-PL relationships."
}
]
},
{
"name": "p",
"data": [
{
"name": "text",
"data": "In this work, we prepare two eco-friendly 0D antimony(III)-based HMHs, (Ph"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "4"
}
]
},
{
"name": "text",
"data": "P)"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "2"
}
]
},
{
"name": "text",
"data": "SbCl"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "5"
}
]
},
{
"name": "text",
"data": " ("
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": ") and (Ph"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "4"
}
]
},
{
"name": "text",
"data": "P)"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "2"
}
]
},
{
"name": "text",
"data": "SbCl"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "5"
}
]
},
{
"name": "text",
"data": "⋅H"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "2"
}
]
},
{
"name": "text",
"data": "O⋅0.5DMF ("
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": ") by carefully control of the synthesis condition, where a fast crystallization process yields compound "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": ", and a slow process favors the formation of solvate "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": ". The compound "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": " exhibits a red emission centered at 695 nm with a large Stokes shift of 332 nm, and "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": " shows a yellow emission peaked at 615 nm with a Stokes shift of 250 nm upon LE photos excitation, originating from triplet STEs. Moreover, "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II "
}
]
},
{
"name": "text",
"data": "shows a dual-band warm white light emission with an additional HE emission band peaked at 470 nm upon HE photos excitation, which is assigned to the singlet STE emission, while "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": " remains a single broadband emission. The investigation of temperature-dependent PL properties suggests that the disappearance of singlet STE emission in "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": " at room temperature is ascribed to the significantly thermal quenching. Interestingly, the reversible structure and PL conversion between "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": " and "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": " are achieved, further revealing a dynamic insertion and extraction of DMF and H"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "2"
}
]
},
{
"name": "text",
"data": "O molecules during the transformation."
}
]
}
]
},
{
"name": "sec",
"data": [
{
"name": "sectitle",
"data": {
"title": [
{
"name": "text",
"data": "2 Experiment"
}
],
"level": "1",
"id": "s2"
}
},
{
"name": "sec",
"data": [
{
"name": "sectitle",
"data": {
"title": [
{
"name": "text",
"data": "2.1 Materials"
}
],
"level": "2",
"id": "s2a"
}
},
{
"name": "p",
"data": [
{
"name": "text",
"data": "Antimony(III) chloride (SbCl"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "3"
}
]
},
{
"name": "text",
"data": ", 99%) was purchased from Alfa Aesar. Tetraphenylphosphonium chloride (Ph"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "4"
}
]
},
{
"name": "text",
"data": "PCl, 98%) was obtained from Energy Chemical. N,N-dimethylformamide (DMF, ≥ 99.5%) was purchased from Shanghai Lingfeng Chemical Reagent). Ethyl acetate (≥ 99.5%) was purchased from Xilong Scientific. SbCl"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "3"
}
]
},
{
"name": "text",
"data": " was stored in an air-free, Ar-filled glovebox with O"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "2"
}
]
},
{
"name": "text",
"data": " and H"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "2"
}
]
},
{
"name": "text",
"data": "O level "
},
{
"name": "text",
"data": "<"
},
{
"name": "text",
"data": " 0.5 ppm, and all chemicals were used as received without any further purification."
}
]
}
]
},
{
"name": "sec",
"data": [
{
"name": "sectitle",
"data": {
"title": [
{
"name": "text",
"data": "2.2 Synthesis of （Ph"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "4"
}
]
},
{
"name": "text",
"data": "P）"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "2"
}
]
},
{
"name": "text",
"data": "SbCl"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "5 "
}
]
},
{
"name": "text",
"data": "（I） and （Ph"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "4"
}
]
},
{
"name": "text",
"data": "P）"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "2"
}
]
},
{
"name": "text",
"data": "SbCl"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "5"
}
]
},
{
"name": "text",
"data": "⋅H"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "2"
}
]
},
{
"name": "text",
"data": "O⋅0.5DMF （II） single crystals"
}
],
"level": "2",
"id": "s2b"
}
},
{
"name": "p",
"data": [
{
"name": "text",
"data": "Firstly, 0.27 mmol of SbCl"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "3"
}
]
},
{
"name": "text",
"data": " and 0.54 mmol of Ph"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "4"
}
]
},
{
"name": "text",
"data": "PCl were mixed and dissolved in 1 ml of DMF to form a clear precursor solution. Single crystals of "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": " were prepared by adding a few drops of ethyl acetate into the precursor solution. Then bulk crystals were prepared by diffusing ethyl acetate into the precursor solution at room temperature. The crystals were then collected and stored in air. Single crystals of "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": " were prepared by directly and slowly diffusing ethyl acetate into the precursor solution. The crystals were then collected and stored in air."
}
]
}
]
},
{
"name": "sec",
"data": [
{
"name": "sectitle",
"data": {
"title": [
{
"name": "text",
"data": "2.3 Characterizations"
}
],
"level": "2",
"id": "s2c"
}
},
{
"name": "p",
"data": [
{
"name": "text",
"data": "Single crystal X-ray diffraction (SCXRD) data were collected on a Bruker D8 Venture X-ray single crystal diffractometer. Data were measured using monochromatic Mo-Kα radiation at 100 K. Data reduction, scaling and absorption corrections were performed using SAINT (Bruker, V8.38A, 2013). The data were solved by the ShelXT (Sheldrick, 2015) structure solution program using the Intrinsic Phasing solution method and by using Olex2 as the graphical interface."
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "["
},
{
"name": "xref",
"data": {
"text": "23",
"type": "bibr",
"rid": "R23",
"data": [
{
"name": "text",
"data": "23"
}
]
}
},
{
"name": "text",
"data": ", "
},
{
"name": "xref",
"data": {
"text": "24",
"type": "bibr",
"rid": "R24",
"data": [
{
"name": "text",
"data": "24"
}
]
}
},
{
"name": "text",
"data": "]"
}
]
},
{
"name": "text",
"data": " The model was refined with version 2016/6 of ShelXL (Sheldrick, 2008) using Least Squares minimization. PXRD patterns were recorded on an X-ray diffractometer (Rigaku SmartLab) with Cu Kα radiation (λ = 0.15418 nm) at a voltage of 45 kV and a current of 200 mA. In situ PXRD patterns with the temperature ranging from 25 °C-100 °C were performed on a PTC-EVO instrument with a temperature controller. Crystals were grounded into powder followed by filling in a Pt sample holder. Diffraction data were collected with every 10 °C increase in temperature. Differential Scanning Calorimetry (DSC) studies on powder samples were performed with the temperature range from 30 °C to 120 °C at a rate of 5 °C·min"
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "-1"
}
]
},
{
"name": "text",
"data": " in both heating and cooling runs. Thermogravimetry analyses (TGA) were carried out using a Mettler Toledo instruments with STARe system. The samples were heated from room temperature (~ 25 °C) to 800 °C at a rate of 10 °C·min"
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "-1"
}
]
},
{
"name": "text",
"data": ", under an argon flux of 30 mL·min"
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "-1"
}
]
},
{
"name": "text",
"data": ". The UV-Vis absorption spectra were measured by using a Teflon-lined integrating sphere accessory into Agilent Technologies Cary Series UV-Vis-NIR Spectrophotometer in the range of 200-800 nm. The Photoluminescence (PL) and PL excitation (PLE) spectra were taken by HORIBA Scientific FluoroMax-4 Spectrofluorometer. PL lifetime measurements were performed by Hamamatsu compact fluorescence lifetime spectrometer C11367. The PL decay curves of I and II were fitted by using U11487 Software from Hamamatsu Photonics at room temperature, and the average radiative lifetimes were determined by monoexponetial fitting. The absolute PLQYs were recorded with Hamamatsu spectrometer C11347."
}
]
}
]
}
]
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"data": "The crystalline structures of "
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"data": "I"
}
]
},
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"data": " and "
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"data": [
{
"name": "text",
"data": "II"
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]
},
{
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"data": " are determined by single crystal X-ray diffraction (SCXRD). Although both compounds possess the same triclinic space group "
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"data": ", the crystallographic data are different (Table S1). For example, "
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"data": "I"
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]
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{
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"data": " has cell parameters of a = 9.9910(7) Å, b = 10.0199(7) Å, c = 12.1452(8) Å, and α = 99.366(2)°, β = 94.602(2)°, γ = 113.731(2)°, V = 1083.81(13) Å"
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"data": "3"
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"data": ". While "
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"data": "II"
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]
},
{
"name": "text",
"data": " possesses the cell dimensions of a = 11.9649(5) Å, b = 12.6946(5) Å, c = 12.6946(5) Å, and α = 100.7490(10)°, β = 110.9240(10)°, γ = 90.2280(10)°, V = 2312.13(17) Å"
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"data": ". The crystalline structures of "
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"data": " are shown in "
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"text": "Fig.1",
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"data": "(a) and (c), with individual [SbCl"
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"data": " pyramids surrounded by bulky Ph"
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},
{
"name": "text",
"data": " cations. The obvious structural difference between "
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{
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"data": " is that DMF and water molecules are present in the single crystal of "
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]
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"data": ". Considering that compound "
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"data": "II"
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]
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"data": " was obtained via a relatively slow diffusion process by using a less volatile solvent as the antisolvent, which allows the solvent molecules (i.e., DMF, H"
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]
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{
"name": "text",
"data": "O) to enter into the crystalline lattices during the crystallization ("
},
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"name": "xref",
"data": {
"text": "Fig.1",
"type": "fig",
"rid": "F1",
"data": [
{
"name": "text",
"data": "Fig.1"
}
]
}
},
{
"name": "text",
"data": "(c)). In addition, hydrogen bonds of C-H…Cl and C-H…O can be found in compound "
},
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"name": "text",
"data": "II"
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]
},
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"data": ". The incorporation of DMF and H"
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"data": [
{
"name": "text",
"data": "2"
}
]
},
{
"name": "text",
"data": "O molecules could induce the reorganization of the organic cations and inorganic polyhedra, resulting in a smaller distance between the neighboring square pyramids and a longer vertical Sb―Cl bond in the pyramidal unit. As shown in "
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"data": {
"text": "Fig.1",
"type": "fig",
"rid": "F1",
"data": [
{
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"data": "Fig.1"
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]
}
},
{
"name": "text",
"data": "(b) and (d), the smallest distance between [SbCl"
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"data": [
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"name": "text",
"data": "5"
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]
},
{
"name": "text",
"data": "]"
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"data": [
{
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"data": "2-"
}
]
},
{
"name": "text",
"data": " units decreases from 9.99 Å for "
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]
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{
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"data": " to 7.93 Å for "
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]
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"data": ", and the vertical Sb―Cl bond length increases from 2.20 Å in "
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{
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"data": "I"
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]
},
{
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"data": " to 2.39 Å in "
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"data": [
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"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": ". In addition, the calculated distortion indexes (D"
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"data": [
{
"name": "text",
"data": "dis"
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]
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{
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"data": ", calculated by equation S1, see the details in Supporting Information) of the [SbCl"
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"data": "5"
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]
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"data": " in compounds"
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"data": [
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"data": " I and II "
}
]
},
{
"name": "text",
"data": "are 0.004632 and 0.004611, respectively, which are similar to those of the reported 0D hybrid antimony halides."
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"data": "["
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"data": ", "
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"text": "26",
"type": "bibr",
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"data": [
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"data": "26"
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"data": " It is expected that the slightly larger structural distortions in compound "
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"data": ". The phase purities of "
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{
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]
},
{
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"data": "II"
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]
},
{
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"data": " are confirmed by powder X-ray diffraction (PXRD) measurements (Fig.S1 and S2). TGA measurements of the fresh samples of "
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]
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"data": [
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"name": "text",
"data": "II"
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]
},
{
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"data": " are shown in Fig.S3, a weight loss of 6 % in "
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]
},
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"data": [
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"data": "o"
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"data": "C is monitored, corresponding to the evaporation of DMF and H"
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"data": "O molecules. In contrast, there is little weight loss in "
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"data": " until up to 300 "
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"data": "P）"
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"data": "SbCl"
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"data": [
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},
{
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"data": "⋅H"
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]
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{
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"data": "O⋅0.5DMF （"
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]
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"data": " as well as DMF and water molecule. Purple spheres： Sb atoms； cyan spheres： Cl atoms； yellow spheres： Br atoms； grey spheres： C atoms； dark yellow spheres： P atoms； blue spheres： N atoms； red spheres： O atoms； white spheres： H atoms， red and yellow pyramids： ［SbCl"
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"data": " species. （d）The smallest distance between two neighboring pyramids and the vertical Sb―Cl bond in pyramidal unit in compound "
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"data": " are characterized by UV-Vis absorption, steady-state and time-resolved PL emissions. As shown in "
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"data": ", the PL excitation (PLE) spectra of both samples show wide bands covering the range of 250―450 nm, in agreement with the absorption spectra (Fig.S4). The PLE and emission spectra show that the PL peak for "
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"data": [
{
"name": "text",
"data": "28"
}
]
}
},
{
"name": "text",
"data": "]"
}
]
},
{
"name": "text",
"data": " The photographs of "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": " and "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": " single crystals under natural light and 365 nm UV light are shown in "
},
{
"name": "xref",
"data": {
"text": "Fig.2",
"type": "fig",
"rid": "F2",
"data": [
{
"name": "text",
"data": "Fig.2"
}
]
}
},
{
"name": "text",
"data": "(b) and (e), respectively. Both crystals are clear and transparent under natural light. However, under 365 nm ultraviolet light "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": " and "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": " exhibit bright red and yellow emissions, respectively. The Commission Internationale de l'Eclairage (CIE) chromaticity coordinates for "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": " and "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": " are (0.60, 0.38) and (0.54, 0.44) upon 360 nm excitation, respectively (Fig.S5). The PLQY of "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": " is measured as 49 %, which is higher than that of "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": " (14 %). The decreased PLQY in "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": " could be resulted from the reduced distance between the neighboring polyhedra upon incorporation of solvent molecules ("
},
{
"name": "xref",
"data": {
"text": "Fig.1",
"type": "fig",
"rid": "F1",
"data": [
{
"name": "text",
"data": "Fig.1"
}
]
}
},
{
"name": "text",
"data": "(b) and (d)). The time-resolved PL of "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": " and "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": " exhibit monoexponential decays with the individual lifetimes of 3.52 μs and 1.06 μs, respectively ("
},
{
"name": "xref",
"data": {
"text": "Fig.2",
"type": "fig",
"rid": "F2",
"data": [
{
"name": "text",
"data": "Fig.2"
}
]
}
},
{
"name": "text",
"data": "(c) and (f)). The main optical properties of "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": " and "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": " are summarized in Table S2."
}
]
},
{
"name": "fig",
"data": {
"id": "F2",
"caption": [
{
"lang": "en",
"label": [
{
"name": "text",
"data": "Fig.2"
}
],
"title": [
{
"name": "text",
"data": "（a）Excitation and emission spectra of "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": ". （b）Single crystals of "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": " under natural light and 365 nm UV light. （c）Time-resolved PL decay curve of "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": " upon 360 nm excitation. （d）Excitation and emission spectra of "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": ". （e）Single crystals of "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": " under natural light， 365 nm and 302 nm UV light. （f）Time-resolved PL decay curve of "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": " at room temperature upon 360 nm excitation. （g）Time-resolved PL decay curve of "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": " under 310 nm excitation."
}
]
}
],
"subcaption": [],
"note": [],
"graphics": [
{
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},
{
"name": "p",
"data": [
{
"name": "text",
"data": "The characteristics of broad FWHMs, large Stokes shifts and long PL decay lifetimes of both compounds suggest that the PL emission of "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": " centered at 695 nm and "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": " peaked at 615 nm are derived from triplet STE emission from [SbCl"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "5"
}
]
},
{
"name": "text",
"data": "]"
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "2-"
}
]
},
{
"name": "text",
"data": " units. The origin of the PL emissions is further confirmed by the power density-dependent PL intensity, which exhibits a linear relationship, excluding the effect of permanent defects (Fig.S6)."
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "["
},
{
"name": "xref",
"data": {
"text": "22",
"type": "bibr",
"rid": "R22",
"data": [
{
"name": "text",
"data": "22"
}
]
}
},
{
"name": "text",
"data": ", "
},
{
"name": "xref",
"data": {
"text": "29",
"type": "bibr",
"rid": "R29",
"data": [
{
"name": "text",
"data": "29"
}
]
}
},
{
"name": "text",
"data": "]"
}
]
},
{
"name": "text",
"data": " Note that the PL spectra of "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": " exhibit identical shapes and features with the excitation wavelengths ranging from 280 nm to 360 nm (Fig.S7)."
}
]
},
{
"name": "p",
"data": [
{
"name": "text",
"data": "However, the PL emission in "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": " exhibits a dual-band emission with an additional HE band peaked at 470 nm upon HE photons excitation ("
},
{
"name": "xref",
"data": {
"text": "Fig.2",
"type": "fig",
"rid": "F2",
"data": [
{
"name": "text",
"data": "Fig.2"
}
]
}
},
{
"name": "text",
"data": "(d) and S8). The excitation spectrum of "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II "
}
]
},
{
"name": "text",
"data": "monitored at HE emission maximum shows a sharp peak at around 310 nm, revealing another emission center ("
},
{
"name": "xref",
"data": {
"text": "Fig.2",
"type": "fig",
"rid": "F2",
"data": [
{
"name": "text",
"data": "Fig.2"
}
]
}
},
{
"name": "text",
"data": "(d)). The PL decay lifetime monitored at 470 nm is about 3.86 ns ("
},
{
"name": "xref",
"data": {
"text": "Fig.2",
"type": "fig",
"rid": "F2",
"data": [
{
"name": "text",
"data": "Fig.2"
}
]
}
},
{
"name": "text",
"data": "(g)), which is quite different from that of the organic molecule Ph"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "4"
}
]
},
{
"name": "text",
"data": "PCl (millisecond-level)."
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "["
},
{
"name": "xref",
"data": {
"text": "30",
"type": "bibr",
"rid": "R30",
"data": [
{
"name": "text",
"data": "30"
}
]
}
},
{
"name": "text",
"data": "]"
}
]
},
{
"name": "text",
"data": " Therefore, the HE emission centered at 470 nm should not originate from the organic component, but rather from the singlet STEs."
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "["
},
{
"name": "xref",
"data": {
"text": "18",
"type": "bibr",
"rid": "R18",
"data": [
{
"name": "text",
"data": "18"
}
]
}
},
{
"name": "text",
"data": "]"
}
]
}
]
},
{
"name": "p",
"data": [
{
"name": "text",
"data": "It is noteworthy that the dual-band emission in compound "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": " gives rise to a warm white-light emission, having a CIE chromaticity coordinate of (0.44, 0.39) upon HE photons excitation ("
},
{
"name": "xref",
"data": {
"text": "Fig.2",
"type": "fig",
"rid": "F2",
"data": [
{
"name": "text",
"data": "Fig.2"
}
]
}
},
{
"name": "text",
"data": "(e) and S5). The appearance of HE band in a dual-band emission facilitates the PL tunability in a wide range, producing the white-light emission. The “static” 5S"
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "2"
}
]
},
{
"name": "text",
"data": " lone pair in Sb"
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "3+"
}
]
},
{
"name": "text",
"data": " is expressed in coordinatively unsaturated geometries (e.g., square pyramids [SbX"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "5"
}
]
},
{
"name": "text",
"data": "]"
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "2-"
}
]
},
{
"name": "text",
"data": "), which reduces symmetry imposed by these motifs and has the singlet electronic ground state ("
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "1"
}
]
},
{
"name": "text",
"data": "S"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "0"
}
]
},
{
"name": "text",
"data": "). The non-degenerate excited states will split into one singlet state "
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "1"
}
]
},
{
"name": "text",
"data": "P"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "1"
}
]
},
{
"name": "text",
"data": " and three triplet states "
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "3"
}
]
},
{
"name": "text",
"data": "P"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "n"
}
]
},
{
"name": "text",
"data": " ( n = 0, 1, 2)."
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "["
},
{
"name": "xref",
"data": {
"text": "19",
"type": "bibr",
"rid": "R19",
"data": [
{
"name": "text",
"data": "19"
}
]
}
},
{
"name": "text",
"data": ", "
},
{
"name": "xref",
"data": {
"text": "31",
"type": "bibr",
"rid": "R31",
"data": [
{
"name": "text",
"data": "31"
}
]
}
},
{
"name": "text",
"data": ", "
},
{
"name": "xref",
"data": {
"text": "32",
"type": "bibr",
"rid": "R32",
"data": [
{
"name": "text",
"data": "32"
}
]
}
},
{
"name": "text",
"data": "]"
}
]
},
{
"name": "text",
"data": " Therefore, the dual-band emission in compound "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": " can be attributed to the transitions of "
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "3"
}
]
},
{
"name": "text",
"data": "P"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "1"
}
]
},
{
"name": "text",
"data": "→"
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "1"
}
]
},
{
"name": "text",
"data": "S"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "0"
}
]
},
{
"name": "text",
"data": " and "
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "1"
}
]
},
{
"name": "text",
"data": "P"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "1"
}
]
},
{
"name": "text",
"data": "→"
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "1"
}
]
},
{
"name": "text",
"data": "S"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "0"
}
]
},
{
"name": "text",
"data": ", which correspondingly generate the singlet and triplet exciton emissions in compound "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": "."
}
]
},
{
"name": "p",
"data": [
{
"name": "text",
"data": "To gain a deep insight into the PL properties of compounds "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": " and "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": " and further examine the underlying reason for the absence of HE emission in compound "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": " at room temperature, temperature-dependent emission spectra are investigated in both compounds. For compound "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": ", upon 360 nm excitation, a new emission band peaked at 605 nm appears besides the emission band centered at 695 nm as the temperature drops from room temperature to 78 K (Fig.S9 and S10). The lifetimes of the dual-band emission centered at 605 nm and 695 nm are measured to be 2.83 μs and 7.24 μs at 78 K, respectively, suggesting the presence of two triplet"
}
]
},
{
"name": "p",
"data": [
{
"name": "text",
"data": "emission states (Fig.S11). Such a PL emission transition with temperature may be attributed to the increased rigidity of molecular environment and reduced thermal energy with decreasing temperature."
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "["
},
{
"name": "xref",
"data": {
"text": "33",
"type": "bibr",
"rid": "R33",
"data": [
{
"name": "text",
"data": "33"
}
]
}
},
{
"name": "text",
"data": "]"
}
]
},
{
"name": "text",
"data": " Upon 310 nm excitation, another additional HE emission peaked at 440 nm in compound "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": " appears and gradually intensifies upon cooling the sample to 78 K ("
},
{
"name": "xref",
"data": {
"text": "Fig.3",
"type": "fig",
"rid": "F3",
"data": [
{
"name": "text",
"data": "Fig.3"
}
]
}
},
{
"name": "text",
"data": "(a)). The PLE spectrum monitored at 440 nm shows a sharp peak of 310 nm with the measured lifetime of 7.61 ns at 78 K, suggesting the singlet STE emission nature (Fig.S10 and S11). However, the HE emission disappears above 180 K ("
},
{
"name": "xref",
"data": {
"text": "Fig.3",
"type": "fig",
"rid": "F3",
"data": [
{
"name": "text",
"data": "Fig.3"
}
]
}
},
{
"name": "text",
"data": "(a) and S9(b)). For compound "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": ", the PL intensity of the emission centered at 615 nm gradually increases when the temperature decreases to 78 K under the excitation wavelength of 360 nm (Fig.S9(c)). Upon 310 nm excitation, the intensities of the dual-band emission peaked at 470 nm and 615 nm gradually increase with the temperature dropping from room temperature to 78 K ("
},
{
"name": "xref",
"data": {
"text": "Fig.3",
"type": "fig",
"rid": "F3",
"data": [
{
"name": "text",
"data": "Fig.3"
}
]
}
},
{
"name": "text",
"data": "(b)). The PL decay lifetimes are measured to be 13.11 ns and 3.98 μs at 78 K, corresponding to the singlet and triplet STE emissions, respectively (Fig.S12 and S13). Therefore, the photophysical process can be illustrated in "
},
{
"name": "xref",
"data": {
"text": "Fig.3",
"type": "fig",
"rid": "F3",
"data": [
{
"name": "text",
"data": "Fig.3"
}
]
}
},
{
"name": "text",
"data": "(c). The ground state of Sb"
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "3+"
}
]
},
{
"name": "text",
"data": " is "
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "1"
}
]
},
{
"name": "text",
"data": "S"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "0"
}
]
},
{
"name": "text",
"data": ", and excited state of Sb"
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "3+"
}
]
},
{
"name": "text",
"data": " has four levels, "
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "3"
}
]
},
{
"name": "text",
"data": "P"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "0"
}
]
},
{
"name": "text",
"data": ", "
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "1"
}
]
},
{
"name": "text",
"data": "P"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": "1"
}
]
},
{
"name": "text",
"data": ", "
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "3"
}
]
},
{
"name": "text",
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},
{
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"data": "."
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"data": [
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"data": "["
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"text": "34",
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}
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}
]
},
{
"name": "text",
"data": " At room temperature, the electrons of compound "
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]
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{
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"data": ", then the excitons undergo a self-trapped process with triplet STEs caused by highly distorted [SbCl"
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"data": " pyramids under photoexcitation. The radiative transition from the triplet STEs gives rise to the largely Stokes-shifted broadband emission. In compound "
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"data": ", the electrons can be excited to the excited states "
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},
{
"name": "text",
"data": "upon HE photos (e.g., 310 nm) excitation, then the excitons get self-trapped with singlet STEs and triplet STEs. Thus, a dual-band emission with fluorescent emission and phosphorescent emission is observed upon the radiative transition of these two types of STEs. While only triplet STEs exist upon LE photos (e.g., 360 nm) excitation, resulting in a single LE broadband emission. At low temperature (e.g., 78K), both compounds exhibit HE and LE band emissions originating from singlet STEs and triplet STEs upon HE photos excitation, however, the HE emission band disappears in compound "
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"title": [
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"data": "（a）Temperature-dependent emission spectra of "
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"data": " upon 310 nm excitation. （b） Temperature-dependent emission spectra of "
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"data": " under 310 nm excitation. （c）Coordinate diagram illustrating the photophysical process of ［SbCl"
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]
},
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"data": ". （d）Thermal evolution of integrated PL intensity of "
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{
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"data": "I"
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]
},
{
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"data": " with the emission centered at 440 nm upon 310 nm excitation. （e）Thermal evolution of integrated PL intensity of "
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"data": " with the emission centered at 470 nm upon 310 nm excitation."
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"data": " upon HE photons excitation,the thermal evolution of the integrated PL intensity of both compounds upon 310 nm excitation is analyzed. The thermal quenching model adopts the Shibata model,"
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"data": " which involves two competing thermal dissociation processes of the singlet exciton and triplet exciton. Therefore, the thermal quenching can be described by the following formula "
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"data": " is the low-temperature PL intensity, E"
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"data": " = 784 meV, E"
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"data": "(e)). Note that the obtained E"
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"data": " is much larger than that of "
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]
},
{
"name": "text",
"data": ", suggesting a stronger thermal quenching effect through non-radiative recombination (NR) in "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": ". Therefore, the singlet STE emission in "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": " is not observed at room temperature, and a dual-band warm-white emission could be achieved in "
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{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": " upon HE photos excitation."
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},
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"data": [
{
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"data": "Remarkably, the exposure of "
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"data": [
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"name": "text",
"data": "I"
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]
},
{
"name": "text",
"data": " crystals to residual DMF and moisture for a few days, the red emission is gradually converted into a yellow emission under UV light illumination. As shown in "
},
{
"name": "xref",
"data": {
"text": "Fig.4",
"type": "fig",
"rid": "F4",
"data": [
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"data": "Fig.4"
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]
}
},
{
"name": "text",
"data": ", the optical properties of the fully converted products from "
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"name": "bold",
"data": [
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"name": "text",
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]
},
{
"name": "text",
"data": " are almost identical to those of compound "
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"data": [
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"name": "text",
"data": "II"
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]
},
{
"name": "text",
"data": ", exhibiting triplet STE emissions under LE photons excitation and dual-band emissions upon HE photons excitation (Fig.S14). Furthermore, SCXRD characterizations of the converted crystals show the same space group and similar crystallographic data as "
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"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": ", confirming the successful transformation (Table S1). In addition, the phase purity of the converted compound is also confirmed by PXRD pattern (Fig.S15). Given that compound "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
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]
},
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"name": "text",
"data": " was obtained via a relatively slow crystal growth process, which would facilitate the participation of solvent molecules (i.e. DMF, H"
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"data": "O) in the crystallization. Therefore, the exposure of "
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"name": "text",
"data": " to the residual DMF and moisture allows the entrance of the solvent molecules into crystalline lattices, leading to the phase transformation from "
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"data": ". However, such conversion could be suppressed by removal of either DMF or water solvent, verifying the cooperative effects of DMF and moisture on this conversion."
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"title": [
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"data": "（a）Illustration of the transformation between "
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"data": ". （b）Excitation and emission spectra of "
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"data": ". （c）"
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"data": "In situ"
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{
"name": "text",
"data": " PXRD patterns of "
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"data": [
{
"name": "text",
"data": "II"
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]
},
{
"name": "text",
"data": " upon thermal treatment. The enlarged-view of PXRD patterns with 2θ between 12"
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"data": [
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"data": "Generally, if the phase transition is induced by solvent molecules, a reversible phase transformation could occur by removal of solvent molecules via thermal treatment. As expected, the excitation and PL emission spectra of the converted products from "
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"data": " after thermal treatment are similar to those of "
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"data": "I "
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"name": "text",
"data": "("
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"data": "(b) and S16). Moreover, the PXRD characterization shows that the obtained product possesses the same phase as "
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"data": " (Fig.S17). Although we fail to obtain the high quality diffraction data to solve the crystal structure by "
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]
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{
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"data": " SCXRD characterization due to the formation of an opaque surface under heating (Fig.S18), "
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"data": [
{
"name": "text",
"data": "in situ"
}
]
},
{
"name": "text",
"data": " PXRD measurements are performed to monitor the conversion process. The PXRD patterns exhibit that the peak at 12.4"
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "o"
}
]
},
{
"name": "text",
"data": " gradually vanished while a peak at 13.2"
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{
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"data": [
{
"name": "text",
"data": "o"
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]
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{
"name": "text",
"data": " increased with temperature, confirming the phase transformation from "
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"data": [
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"name": "text",
"data": "II"
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{
"name": "text",
"data": " to "
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"name": "bold",
"data": [
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"name": "text",
"data": "I"
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]
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{
"name": "text",
"data": " with the conversion temperature lying between 70-80 "
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "o"
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]
},
{
"name": "text",
"data": "C ("
},
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"name": "xref",
"data": {
"text": "Fig.4",
"type": "fig",
"rid": "F4",
"data": [
{
"name": "text",
"data": "Fig.4"
}
]
}
},
{
"name": "text",
"data": "c). To further study the thermal induced phase transition, the differential scanning calorimetry (DSC) traces for both heating and cooling runs of "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": " are shown in Fig.S19. The heating scan shows an endothermic transition at around 75 "
},
{
"name": "sup",
"data": [
{
"name": "text",
"data": "o"
}
]
},
{
"name": "text",
"data": "C, in good agreement with "
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"name": "italic",
"data": [
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"name": "text",
"data": "in situ"
}
]
},
{
"name": "text",
"data": " PXRD measurements. It has been reported that small molecules in solution could affect the electronic spectra, and thus, the transformation of the structures and PL emissions between "
},
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"name": "bold",
"data": [
{
"name": "text",
"data": "I"
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]
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"name": "text",
"data": " and "
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"name": "bold",
"data": [
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"name": "text",
"data": "II"
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]
},
{
"name": "text",
"data": " can be ascribed to the dynamic insertion and removal of solvent molecules of the crystals."
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"data": "["
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"data": "In summary, two environment-friendly 0D HMHs of (Ph"
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{
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"name": "sub",
"data": [
{
"name": "text",
"data": "2"
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},
{
"name": "text",
"data": "SbCl"
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{
"name": "sub",
"data": [
{
"name": "text",
"data": "5"
}
]
},
{
"name": "text",
"data": "⋅H"
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{
"name": "sub",
"data": [
{
"name": "text",
"data": "2"
}
]
},
{
"name": "text",
"data": "O⋅0.5DMF"
},
{
"name": "sub",
"data": [
{
"name": "text",
"data": " "
}
]
},
{
"name": "text",
"data": "("
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": ") have been prepared through antisolvent diffusion-dependent crystallization. Upon LE photons excitation, "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": " and "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": " exhibit strongly Stokes shifted broadband red and yellow PL emissions, respectively, originating from triplet STEs. While upon HE photons excitation, "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": " shows a dual-band warm white-light emission with an additional HE band (i.e., blue emission) arising from singlet STEs. The disappearance of HE band in "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": " is ascribed to the significantly thermal quenching at room temperature. Interestingly, the reversible heat-solvent induced structure and PL transformations between "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "I"
}
]
},
{
"name": "text",
"data": " and "
},
{
"name": "bold",
"data": [
{
"name": "text",
"data": "II"
}
]
},
{
"name": "text",
"data": " are achieved. Our results provide two generally efficient strategies (synthesis and post-synthesis) to design materials with switchable PL properties between the single- and dual-band emission in 0D Sb-based HMHs. The modulation mechanism of dynamic incorporation/removal of solvent molecules in this work enables further exploration of novel functional materials for diverse applications, such as small molecule sensors."
}
]
}
]
}
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"title": "Shibata， H.， Negative thermal quenching curves in photoluminescence of solids"
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"name": "text",
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"data": "谭丽,罗志山,李茜等.基于零维杂化锑基氯化物的可逆荧光发射转化[J].发光学报,DOI:10.37188/CJL.20220357"
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"text": "谭丽,罗志山,李茜等.基于零维杂化锑基氯化物的可逆荧光发射转化[J].发光学报,DOI:10.37188/CJL.20220357"
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"data": [
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"data": "TAN Li,LUO Zhishan,LI Qian,et al.Reversible Emission Transformations in Zero-Dimensional Hybrid Antimony Chlorides[J].Chinese Journal of Luminescence,DOI:10.37188/CJL.20220357"
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"text": "TAN Li,LUO Zhishan,LI Qian,et al.Reversible Emission Transformations in Zero-Dimensional Hybrid Antimony Chlorides[J].Chinese Journal of Luminescence,DOI:10.37188/CJL.20220357"
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"fundinggroup": [
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"text": [
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"name": "text",
"data": "国家自然科学基金（52072166）； 广东省自然科学基金（2022A1515010918）； 深圳市资助科技创新委员会 （KQTD2016053019134356， RCJC2021060910444106）资助。"
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"data": "Supported by National Natural Science Foundation of China（52072166）； Guangdong Science and Technology Department （2022A1515010918）； Shenzhen Science and Technology Innovation Committee（KQTD2016053019134356， RCJC2021060910444106）."
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"history": {
"received": "2022-09-29",
"revised": "2022-10-17",
"epub": "2022-11-15",
"opub": "2022-11-15"
}
},
"appendix": [],
"type": "research-article",
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"supplementary": [],
"journalTitle": "发光学报",
"originalSource": []
}
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