最新刊期
      卷 45 ， 期 9 ， 2024

        Cover Story

      • “最新研究突破，钙钛矿发光二极管实现纯红光高效发光，显著提升性能和稳定性。”
        QU Mujing,ZHANG Shulan,DUAN Jiaxin,DAI Henglong,XUAN Tongtong,XIE Rongjun,LI Huili
        Vol. 45, Issue 9, Pages: 1399-1409(2024) DOI: 10.37188/CJL.20240161
        摘要：Recently， perovskite light-emitting diodes （PeLEDs） have shown excellent properties such as ultra-high color purity， ultra-wide color gamut， and high luminous efficiency. In particular， the external quantum efficiency （EQE） and brightness of green and near-infrared light PeLEDs had been rapidly improved， but the performance （efficiency， brightness， reliability， etc.） of pure-red PeLEDs with emission peak at 620-640 nm developed relatively slowly. In this paper， the pure-red mixed halogen perovskite CsPb（Br/I）3 nanocrystals were successfully prepared by a traditional hot injection combined with post-treatment process based on N-hydroxyethyl ethylenediamine triacetic acid （HEDTA） ligands. The optical properties and stability were significantly improved. HEDTA multi-dentate ligands effectively bound to Pb2+ and I- on the surface of nanocrystals to passivate the surface defects related to Pb2+ ions， and at the same time， inhibited the formation of I- Frankel defects that usually lead to halide segregation. Finally， PeLEDs encapsulated with HEDTA treated CsPb（Br/I）3 nanocrystals as a luminescent layer achieved a pure-red emission peaked at 636 nm as well as a maximum EQE and luminnace of 18.62% and 1 880 cd/m2， respectively.  
        关键词：pure-red perovskite LEDs;CsPb（Br/I）3;ligand engineering strategy;Defect passivation   
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        发布时间：2024-09-26

        Expert Perspectives

      • “在量子点显示技术领域，研究者们探索了喷墨打印QLED的制备策略，为提升其性能提供了新思路。”
        LIU Chen,WEI Changting,LUO Xin,SUN Zhiguo,XU Bo,ZENG Haibo
        Vol. 45, Issue 9, Pages: 1410-1430(2024) DOI: 10.37188/CJL.20240051
        摘要：Colloidal semiconductors have garnered significant attention in academia and industry due to their unique nanoscale transport effects， self-luminous properties， and rheological characteristics compatible with large-area industrial printing processes. Inkjet printing， as an emerging technology， is expected to usher in a new generation of printable， large-area， high-performance patterned quantum dot light-emitting diodes （QLEDs）. Nonetheless， the current preparation process of inkjet-printed QLEDs faces challenges related to interfacial erosion caused by improper quantum dots （QDs） ink formulation and reduced luminescence efficiency after film formation， leading to a significant performance gap compared to spin-coated devices. This review begins by outlining the fundamental concepts and development status of QDs display technology， followed by an analysis of the classification， principles， advantages， and disadvantages of the three inkjet printing technologies. It then introduces three types of QDs containing cadmium， lead， and cadmium-free materials， analyses their research progress in inkjet-printed QLEDs， and focuses on three typical strategies for achieving high-performance QLEDs using inkjet printing. Finally， this work looks forward to the development trends and promising prospects of inkjet-printed QLEDs.  
        关键词：quantum dot;inkjet printing;electroluminescent light-emitting diode;ink engineering;surface/interface regulation   
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        发布时间：2024-09-26

        Synthesis and Properties of Materials

      • “报道：硫量子点作为新型纳米发光材料，其合成与光学传感器应用研究取得进展，为环境监测提供新方案。”
        LIAO Jing,LIU Chenghao,ZHU Yunxiao,MA Xiaoming,NAN Xinru,LEI Qiaowen,ZHANG Hanqiang,HUANG Qitong,LIN Xiaofeng
        Vol. 45, Issue 9, Pages: 1431-1444(2024) DOI: 10.37188/CJL.20240146
        摘要：With the rapid development of nanotechnology， various types of sulfur nanomaterials have been developed， including sulfur nanoparticles， sulfur quantum dots， and other sulfur-containing nanocomposites with hybrid structures. As a new type of “zero-dimensional” nano-luminescent material， sulfur quantum dots are attracting more and more attention from scholars due to their photoluminescence properties， low toxicity， and ease of preparation. First， this review explores the synthesis of sulfur quantum dots. Then， it introduces the progress and application of sulfur quantum dots as sensing materials in optical sensor technology， and discusses in depth their detection applications in environmental contaminants and biological small molecules. Finally， it summarizes the current challenges faced by sulfur quantum dots and looks forward to their future development.  
        关键词：sulfur quantum dots;optical sensing;Environmental contaminants;Biosmall molecules   
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      • “Researchers have developed a self-recoverable mechanoluminescent phosphor Ca5Ga6O14:Eu3+, which can produce red light under stress and has good repeatability. By co-doping Tb3+, the color can be changed from red to green, providing a new direction for optical information encryption.”
        ZHANG Ting,WANG Zhijun,WANG Dawei,ZHAO Jinxin,YANG Zhiping,LI Panlai
        Vol. 45, Issue 9, Pages: 1445-1455(2024) DOI: 10.37188/CJL.20240111
        摘要：A novel self-recoverable mechanoluminescent phosphor Ca5Ga6O14∶Eu3+ was developed by the high-temperature solid-state reaction method， and its luminescence properties were investigated. Ca5Ga6O14∶Eu3+ can produce red mechanoluminescence， and importantly， it shows good repeatability. The mechanoluminescence of Ca5Ga6O14∶Eu3+ results from the piezoelectric field generated inside the material under stress， rather than the charge carriers stored in the traps， which can be confirmed by the multiple cycles of mechanoluminescence tests and heat treatment tests. The mechanoluminescence color can be turned from red to green by co-doping varied concentrations of Tb3+， which may be meaningful for encrypted letter writing. The encryption scheme for secure communication was devised by harnessing mechanoluminescence patterns in diverse shapes and ASCII codes， which shows good encryption performance. The results suggest that the mechanoluminescence phosphor Ca5Ga6O14∶Eu3+，Tb3+ may be applied to the optical information encryption.  
        关键词：Phosphor;mechanoluminescence;self-recoverable;information encryption   
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      • “在发光材料领域，研究者采用高温固相法合成了Sr2-xGa2SiO7∶xSm3+红色荧光粉，并通过多种表征手段深入研究了其物相结构和发光性能。结果表明，该荧光粉在404 nm紫外光激发下能发出明亮的红色光，且具有优异的热稳定性和高达72.5%的荧光量子效率，为WLED应用提供了一种高性能发光材料。”
        LI Jing,XU Yingchao,HONG Junhuang,LIU Yue,ZHANG Xianyu
        Vol. 45, Issue 9, Pages: 1456-1466(2024) DOI: 10.37188/CJL.20240137
        摘要：A series of Sr2-xGa2SiO7∶xSm3+ red phosphors were synthesized using the high-temperature solid-phase method. The synthesized phosphors were characterized by X-ray diffraction （XRD）， scanning electron microscopy （SEM）， photoluminescence （PL） spectra， high-temperature luminescence spectra， fluorescence quantum efficiency， and fluorescence decay lifetime to investigate their phase composition， crystal structure， luminescent properties， and thermal stability. The results indicate that under 404 nm UV excitation， the Sr2-xGa2SiO7∶xSm3+ phosphors emit bright red light at 598 nm. The luminescence intensity of Sr2-xGa2SiO7∶xSm3+ phosphors varies with the concentration of Sm3+ ions， exhibiting concentration quenching at x = 0.03 due to dipole-dipole interactions. As the temperature increases， the phosphors display anomalous thermal quenching behavior， reaching maximum luminescence intensity at 393 K， which is 102.5% of that at room temperature. At 473 K， the luminescence intensity can still maintain 101.3% of that at room temperature. Additionally， the fluorescence quantum efficiency of the optimal sample can reach 72.5%. The research demonstrates that Sr2-xGa2SiO7∶xSm3+ red phosphors are promising luminescent materials for white light-emitting diodes （WLEDs） due to their high thermal stability and quantum efficiency.  
        关键词：abnormal thermal quenching;high-temperature solid-state method;silicate;Sm3+ doped   
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      • “在室温下，科学家们快速合成了两种新型高效红光铱（Ⅲ）配合物，具有优异的电子迁移率和光物理特性，为高性能有机发光二极管（OLED）器件的发展提供了新思路。”
        LU Guangzhao,WU Shaohua,YU Sheng,ZHOU Liang,ZHOU Changjiang
        Vol. 45, Issue 9, Pages: 1467-1477(2024) DOI: 10.37188/CJL.20240144
        摘要：At room temperature， two efficient red iridium（Ⅲ） complexes， （4tfmpq）2Ir（Pydtc） and （4tfmpq）2-Ir（Indtc）， containing a unique four-membered ring Ir-S-C-S skeleton， have been successfully synthesized. These complexes use 4-（4-（trifluoromethyl）phenyl）quinazoline （4tfmpq） as the main ligand and dithiocarbamate derivatives （Na-Pydtc and Na-Indtc） as the ancillary ligands. The abundant nitrogen heterocycles in their molecular structure enhance the electron mobility， while the different electron-donating units in the dithiocarbamate derivatives help to regulate photophysical properties. The complex （4tfmpq）2Ir（Pydtc） exhibited an emission peak at 611 nm and the quantum yield of 92.7%. The emission peak and quantum yield of complex （4tfmpq）2Ir（Indtc） were 614 nm and 90.9%， respectively. High-performance organic light-emitting diodes （OLEDs） using the double emissive layer structure were prepared by employing these two complexes as dopant. For device D1 using （4tfmpq）2Ir（Pydtc） as dopant， the maximum current efficiency （ηc，max） and maximum external quantum efficiency （EQEmax） reached 56.29 cd·A-1 and 32.53%， respectively， and the CIE （Commission Internationale de l’Eclairage） coordinates were （0.61， 0.37）. In addition， the device showed a lower efficiency roll-off at the brightness of 1 000 cd·m-2， with the EQE remaining at 28.44%. These results demonstrate the potential application of iridium （Ⅲ） complexes containing a four-membered ring Ir-S-C-S skeleton in OLEDs.  
        关键词：electroluminescence;organic light-emitting diode;iridium complex;red emission;dithiocarbamate   
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      • “最新研究突破，利用天然菠菜制备出可调荧光的多色发光碳点，为生物成像等领域开辟新途径。”
        LI Shenghui,HE Yuxuan,DU Youquan,WEI Zhipeng,LI Yu,CHENG Qian
        Vol. 45, Issue 9, Pages: 1478-1487(2024) DOI: 10.37188/CJL.20240095
        摘要：Multicolor emission carbon dots（CDs） have widespread application prospects in bioimaging， sensing， light-emitting diodes and catalysis. However， to date， it remains a long-standing challenge to prepare tunable-emission multicolor CDs using biomass materials as carbon sources. Herein， six types of biomass carbon dots （BCDs） with adjustable emission from 450 nm to 680 nm under a single wavelength excitation were successfully prepared using nature spinach as carbon sources via changing reaction solvents. The obtained BCDs were characterized by morphology， size， element composition and optical properties. Among all the BCDs， the average diameters of blue， yellow， pink and red BCDs were 2.25 nm， 4.15 nm， 1.73 nm and 7.96 nm， respectively. These BCDs had high quantum yields （12.68%-30.77%）. The fluorescence mechanism of the tunable BCDs was mainly attributed to the interaction between the carbon core’s conjugation degree and surface groups， which was analyzed by investigating the structure， composition and optical properties of CDs. Moreover， chiral films with iridescence were prepared by evaporation-induced self-assembly via dispersing blue， yellow and red BCDs into CNC solution， respectively， followed by characterizing their optical performance. This research paves the way to a new development in view of application for multicolor BCDs.  
        关键词：carbon dots;Multicolor emission;multi-emission peaks;cellulose nanocrystals;circularly polarized luminescence   
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        发布时间：2024-09-26

        Device Fabrication and Physics

      • “在量子信息科学领域，六方氮化硼单光子源研究取得新进展，为光量子技术发展提供新机遇。”
        WU Xinyu,LIU Guanlin,JING Pengtao,LIU Lei,SHEN Dezhen
        Vol. 45, Issue 9, Pages: 1488-1502(2024) DOI: 10.37188/CJL.20240129
        摘要：Quantum emitter， the cornerstone of quantum information science and technology， is essential for advancing light quantum science and technology. The realization of efficient， stable and easily accessible single photon sources is the key to promote the development of related technologies. Currently， single-photon sources in hexagonal boron nitride （h-BN） have attracted much attention due to their high brightness and excellent room-temperature optical stability. This paper outlines the current research status and physical properties of single-photon sources in h-BN， details various preparation techniques for realizing precisely localized single-photon sources in h-BN， and explores the application of single-photon sources based on h-BN in different applications， such as coupling with optical microcavities and waveguides， and their modulation by external electric fields or stresses. Finally， the paper summarizes the opportunities and challenges facing single photon sources in hexagonal boron nitride and discusses the research directions currently being explored as well as new possibilities for the future.  
        关键词：two-dimensional materials;hexagonal boron nitride;solid-state single photon source;quantum photonics   
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      • “在柔性显示领域，科学家们设计了一种新型蓝光分子DPF-NA，实现了高效率窄光谱的电致发光，为OLED技术发展提供了新思路。”
        WANG Xiaowei,YUAN Jiangbo,MA Peilan,YAN Ziqiang,CUI Zhiyuan,SUN Jun,PENG Qiming
        Vol. 45, Issue 9, Pages: 1503-1510(2024) DOI: 10.37188/CJL.20240143
        摘要：High-efficiency narrow-emission blue organic light-emitting device （OLED） is one of the research hotspots in the field of flexible display. In this paper， a D-A-D blue molecule， DPF-NA was designed and synthesized by using dinaphthyl［2，3-B∶2′，3′-D］furan as a weak electron acceptor and N-（4-biphenylyl）-1-naphthylamine as electron donors. The moleculeshows a photoluminescence （PL） peak at 441 nm in n-hexane solution. Theoretical calculations and photophysical measurements show that DPF-NA possesses hybridized localized charge transfer （HLCT） excited state characteristics， combining high luminescence efficiency of the localized state （LE） and high exciton utilization of the charge transfer （CT） state. As a consequence， the molecule shows a high PL photoluminescence quantum efficiency （PLQY） of 81.2% in dichloromethane solution. OLED devices based on the DPF-NA film （with a doping concentration of 3%（mass fraction）） has an electroluminescence （EL） peak located at 455 nm， with a small full width at half maximum （FWHM） of 26 nm. The CIE coordinates are （0.14， 0.08）， and the maximum external quantum efficiency （EQEmax） is 6.76%.  
        关键词：OLED;dinaphtho［2，3-B∶2′，3′-D］furan;Blue emission;exciton utilization;external quantum efficiency   
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      • “In the realm of micro and nanoscale temperature sensing, a breakthrough has been achieved with the development of a submicron-scale temperature sensor. This sensor, based on a triangular MAPbI3 nanoplatelet laser, exhibits an impressive sensitivity of 185 pm/℃. The linear shift in the laser line's peak wavelength with temperature changes enables accurate sensing. The sensor's high Q factor of ~2,610 and low laser threshold of 19.8 µJ·cm² underscore its potential for compact integration.”
        ZHAO Ruofan,TAO Jianxun,XI Yuying,CHEN Jiangzhao,JI Ting,WANG Wenyan,WEN Rong,CUI Yanxia,CHEN Junsheng,LI Guohui
        Vol. 45, Issue 9, Pages: 1511-1520(2024) DOI: 10.37188/CJL.20240133
        摘要：Submicron scale temperature sensors are crucial for a range of applications， particularly in micro and nanoscale environments. One promising solution involves the use of active whispering gallery mode （WGM） microresonators. These resonators can be remotely excited and read out using free-space structures， simplifying the process of sensing. In this study， we present a submicron-scale temperature sensor with a remarkable sensitivity up to 185 pm/℃ based on a triangular MAPbI3 nanoplatelet （NPL） laser. Notably， as temperature changes， the peak wavelength of the laser line shifts linearly. This unique characteristic allows for precise temperature sensing by tracking the peak wavelength of the NPL laser. The optical modes are confined within the perovskite NPL， which measures just 85 nm in height， due to total internal reflection. Our NPL laser boasts several key features， including a high Q of ~ 2 610 and a low laser threshold of about 19.8 µJ·cm-2. The combination of exceptional sensitivity and ultra-small size makes our WGM device an ideal candidate for integration into systems that demand compact temperature sensors. This advancement paves the way for significant progress in the development of ultrasmall temperature sensors， opening new possibilities across various fields.  
        关键词：Temperature sensor;submicron scale;perovskite nanoplatelet   
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      • “最新研究突破，报道了一种新型ITO/ZnO量子点/Au光电探测器，通过硼酸表面处理和退火工艺，显著提升了ZnO材料的光电性能，实现了快速响应和高灵敏度的自驱动光电探测。”
        HE Yueyi,SONG Xiyao,WANG Haoran,HU Junyi,LIU Shaoyao,ZHOU Qinan,CHENG Ming,FAN Yi,WANG Yunpeng,WANG Fei,ZHAO Dongxu
        Vol. 45, Issue 9, Pages: 1521-1530(2024) DOI: 10.37188/CJL.20240122
        摘要：Zinc oxide nanomaterials （ZnO） hold tremendous potential in the field of self-powered photodetection due to their unique physical and chemical properties. However， self-powered photodetectors based on ZnO nanomaterials currently face challenges such as complex structures， slow response speed， low responsivity and detectivity etc.， making it difficult to meet practical application requirements. In this study， simple structured ITO/ZnO quantum dots （QDs）/Au photodetectors with fast response speed were fabricated. A surface treatment process combining boric acid （BA） surface treatment with annealing was carried out， which successfully reduced the surface state density in ZnO quantum dot films and increased the device’s detectivity by approximately an order of magnitude. The rise and fall time of the device at 0 V were 1.29 ms and 1.31 ms， respectively， achieving an on/off ratio of 10⁴ and a responsivity as high as 8.81 mA/W. Applying this process to bandgap-tunable Mg²⁺-doped quantum dot-based photodetectors similarly improved the detectivity and responsivity of the devices. A high-response-speed self-powered photodetector with a rise time of 0.93 ms was obtained， and as the Mg doping concentration increased， the rise time of the device decreased. This work demonstrates that the combined BA surface treatment with annealing process significantly enhances the performance of chemically synthesized ZnO materials， with potential widespread application in performance optimization of photodetectors based on ZnO nanomaterials.  
        关键词：zinc oxide quantum dots;Self-powered photodetector;Solution surface treatment;Bandgap tuning   
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      • “在激光医疗和食品药品检测领域，研究者提出了一种新型高功率橙黄色激光器，实现了9.38瓦的稳定输出，为相关应用提供了新工具。”
        ZHANG Zhijun,CHEN He,ZHANG Zhuo,LIU Zhijun,ZHANG Jianwei,DU Ziye,ZHOU Yinli,ZHANG Xing,CHEN Chao,NING Yongqiang,WANG Lijun
        Vol. 45, Issue 9, Pages: 1531-1538(2024) DOI: 10.37188/CJL.20240126
        摘要：Aiming at the application requirements of orange-yellow laser in the fields of laser medicine， food and drug detection， we have carried out research on high-power fundamental frequency 1 150 nm vertical external cavity surface emitting semiconductor laser （VECSEL）. In this paper， a large-size fundamental mode spot external cavity structure in the laser resonant cavity is proposed to make the VECSEL cavity mode match the larger pump spot size to achieve high-power laser output. The gain peak-cavity mode detuning structure is proposed. The gain peak is different from the temperature drift coefficient of the cavity mode. The gain peak-cavity mode matching is good at high pump power， and the laser wavelength stability control under high pump power is realized. The output power of the VECSEL device prepared by us reaches 9.38 W at the laser wavelength of 1 150 nm， and a good circular symmetrical output spot morphology is obtained. The divergence angles of the spot in the orthogonal direction are 7.3° and 7.5°， respectively.  
        关键词：semiconductor laser;vertical external cavity surface emitting semicondctor laser（VECSEL）;gain chip;strained quantum well   
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      • “在GaN基蓝光Micro-LED芯片研究中，专家揭示了温度和电压应力对反向漏电流的影响，为提升芯片性能提供新见解。”
        WANG Wei,ZHANG Tengfei,WANG Shouyu
        Vol. 45, Issue 9, Pages: 1539-1546(2024) DOI: 10.37188/CJL.20240164
        摘要：For GaN-based blue Micro-LED chips， experimental methods involving temperature and voltage were used to investigate the reverse leakage current failure mechanism in this paper. The results demonstate that， under temperature stress， the reverse leakage current of Micro-LED chips， prior to degradation， is primarily composed of multi-step thermal-assisted tunneling current， which is significantly influenced by the Poole-Frenkel （PF） tunneling mechanism. After degradation under voltage stress （-85 V）， the reverse leakage current increases with the extension of stress time， transitioning from a multi-step thermal-assisted tunneling current to a space-charge-limited current （SCLC）. Through analyzing the band diagrams before and after degradation， it was determined that prolonged voltage stress leads to breakdown phenomenon， resulting a drastic change in the internal electric field of the Micro-LED chip. Electrons are then able to collide with lattice atoms with high energy， generating numerous carriers. Consequently， this increase the rate of non-radiative recombination， causing the reverse leakage current to increase from an original value of 1.9766 × 10-7 A to 1.5834 × 10-4 A.  
        关键词：micro-LED;failure mechanism;non-radiative recombination;trap-assisted tunneling;reverse leakage current   
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        Luminescence Applications and Interdisciplinary Fields

      • “在神经形态计算领域，研究者利用掺杂离子液体的有机聚合物构建了低电压、高可调谐的忆阻器，实现了光调控生物突触特性，为低功耗高性能设备设计提供指导。”
        LI Wen,ZENG Nuolan,ZHOU Jia,XING Xiaolin,ZHOU Liuran,SHI Wei,YI Mingdong
        Vol. 45, Issue 9, Pages: 1547-1559(2024) DOI: 10.37188/CJL.20240150
        摘要：Memristor-based neuromorphic computing showcases great potential for overcoming the von Neumann bottleneck and enabling energy-efficient data processing. Organic polymers， due to their excellent semiconductor and optoelectronic properties as well as solution processability， are ideal candidates for low-cost memristor and synaptic applications. However， the high operating voltage and random switching of resistive states in polymer memristors limit their performance in neuromorphic chips and increase the complexity of peripheral circuits. In this study， the polymer MEH-PPV doped with ionic liquid ［EMIM］［PF6］ was used as the active layer to construct a vertically structured memristor. This design provides a variety of short-term and long-term synaptic plasticity behaviors， which can be modulated by electrical and optical inputs， achieving a significant reduction in operating voltage and an expanded range of tunable conductance states. The memristor exhibited key features of optically modulated biological synapse and brain-inspired learning and memory characteristics at mV-level voltage while integrating photodetection， memory， and processing functions into a single compact device. Additionally， this organic synaptic array was applied to image recognition and memory tasks in the human visual neural system. The promising results provide important insights for the design of next-generation low-power and high-performance organic neuromorphic devices.  
        关键词：memristor;organic polymer;ionic liquid;optoelectronic synapse;image recognition   
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      • “在光疗技术领域，研究者开发了微流控生物芯片和荧光纳米传感器，模拟肿瘤微环境，探究光动力疗法中单线态氧的产生，为临床应用提供参考。”
        SUN Yuran,PENG hongshang
        Vol. 45, Issue 9, Pages: 1560-1567(2024) DOI: 10.37188/CJL.20240145
        摘要：Photodynamic therapy （PDT）， as a new type of phototherapy technology， has the advantages of non-invasive and low toxic side effects， and has important application prospects in clinical medicine. Currently， PDT research is mainly based on statically cultured tumor cells， which significantly differ from the actual tumor microenvironment and often lead to poor clinical efficacy of PDT. This paper designs and develops a microfluidic biochip for tumor PDT， and prepares a fluorescent nanosensor （λex = 410 nm， λem = 460 nm） to fluorescently sense the production of singlet oxygen during the PDT process， analyzing the main factors affecting the inactivation of tumor cells by PDT. The results show that reducing the pH of the culture medium from 7.4 to 6.8 （environmental acidification） and increasing the injection flow rate from 5 μL/h to 20 μL/h （increased shear stress） both reduce the phagocytic efficiency of tumor cells towards nano photosensitizers. In the early stage of PDT， the oxygen content is sufficient （<30 s）， and the differences in photosensitizer dosage， microacidification， and mechanical microenvironment have little effect on the yield of singlet oxygen. The cell phototoxicity is similar. In the late stage of PDT （30-180 s）， the oxygen content decreases， the yield of singlet oxygen decreases， and different tumor microenvironment parameters result in different cellular phototoxicity. This work explores the production of singlet oxygen during PDT in a simulated tumor microenvironment through fluorescence sensing， providing useful references for promoting the clinical development of tumor PDT.  
        关键词：fluorescence sensing;singlet oxygen;microfluidic chip;photodynamic therapy   
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      • “最新研究报道，科学家合成了一种新型荧光分子探针，能高效检测人体中的锌离子，为相关疾病预防和治疗提供新工具。”
        XIAO Jiayang,ZONG Hongfeng,HUAI Yu,LU Haicheng,GAO Yun,GAO Yan
        Vol. 45, Issue 9, Pages: 1568-1577(2024) DOI: 10.37188/CJL.20240148
        摘要：Zinc ion （Zn2+）， as a vital trace metal element for the human body， playing a key role in maintaining the normal physiological function of the human body， energy conversion， metabolism and signal transmission， etc. The detection and monitoring of Zn2+ in the body was of great significance for the prevention and treatment of related diseases. A colorimetric responsive fluorescent probe （SPA） for Zn2+ was designed and synthesized by condensation of naphthalene and ［2，1-b］ furan-2-carbohydrazide with 4-（diethylamino） salicyl aldehyde. The fluorescence of probe SPA was greatly enhanced and the wavelength was obviously red-shifted after the identification of Zn2+. The response mechanism of probe SPA to Zn2+ was investigated by HR-MS. The detection limit of Zn2+ recognized by probe SPA can be as low as 1.13 nmol/L. The probe SPA has been successfully applied to confocal imaging of Zn2+ in HeLa cells and fluorescence imaging of Zn2+ in live mice in vivo.  
        关键词：naphthofuran;zinc;fluorescent probe;cellular imaging;mice imaging   
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        发布时间：2024-09-26
      • “在化学传感领域，研究人员开发了一种新型荧光探针ARC-Fe3+，能够高选择性、高灵敏度地检测焦磷酸根离子，为生物成像提供了新工具。”
        CHEN Yiliu,ZONG Hongfeng,LI Jin,GAO Yan,XIAO Jiayang,GAO Yun
        Vol. 45, Issue 9, Pages: 1578-1586(2024) DOI: 10.37188/CJL.20240152
        摘要：A novel ligand ARC was synthesized by condensation reaction of naphthalene ［2，1-b］ furan-2-carbohydrazide and 4-formyl-3-hydroxy-N-butyl-1，8-naphthalenediimide. The ligand ARC was synthesized by 1∶1 complex reaction with Fe3+. It was studied by high-resolution mass spectroscopy （HR-MS）， NMR hydrogen spectroscopy （1H NMR）， UV spectroscopy， and fluorescence spectroscopy. The results showed that the probe ARC-Fe3+ can identify pyrophosphate with high selectivity and sensitivity through fluorescence “OFF-ON”. The detection limit of the probe ARC-Fe3+ to identify pyrophosphate is 1.12×10-8 mol/L， and the response to pyrophosphate can be completed within 60 s. The probe ARC-Fe3+ has been successfully applied to the fluorescence imaging of pyrophosphate in cells and living mice， so it can be applied to various fields such as food， medicine， medical treatment and environment in the future.  
        关键词：Fe3+ complex;fluorescent probe;PPi;cell imaging;Live mouse imaging   
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