最新刊期
卷 47 ， 期 2 ， 2026
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Fluorine Substitution Site Effects on Electroluminescent Properties of Platinum（Ⅱ） Complexes 增强出版 AI导读
“介绍了其在有机发光材料领域的研究进展，相关专家设计并合成了三种新型环金属铂（Ⅱ）配合物，系统探究了氟原子取代位置对其光电性能的影响，为高性能有机发光材料和器件的分子设计提供了可行策略。”摘要：Three new cyclometalated platinum（Ⅱ） complexes， PtB， PtB-F-2， and PtB-F-1， were designed and synthesized to systematically investigate the influence of fluorine substitution sites on their photophysical and electroluminescent properties. The structures of these complexes were confirmed by 1H/13C NMR and mass spectrometry. Combined experimental characterization and theoretical calculations were employed to elucidate the regulatory effect of fluorine substituents on the photophysical and electrochemical behaviors of the complexes. The results reveal that the substitution position of the fluorine atom has a pronounced impact on the emission spectra. Compared with the non-fluorinated PtB， PtB-F-2 exhibits a red-shifted emission， whereas PtB-F-1 shows a blue-shifted emission. In degassed dichloromethane solutions at room temperature， all complexes display bright green emission in the range of 505-533 nm， with photoluminescence quantum yields of 20.1%-27.2% and lifetime of 1.96-3.87 μs. When applied as the emissive dopants in organic light-emitting devices， the corresponding devices exhibit intense green electroluminescence with maximum external quantum efficiencies （EQEs） of 19.4%-22.2% and maximum luminance values of 24 761-30 316 cd·m-2. Among them， PtB-F-1 and its device demonstrate the best photoluminescent and electroluminescent performance. This study highlights that precise modulation of fluorine substitution sites within the PtB backbone effectively tunes the emission characteristics of Pt（Ⅱ） complexes， offering a feasible molecular design strategy for high-performance organic light-emitting materials and devices.关键词：organic light-emitting diodes;fluorine substitution site effect;platinum（Ⅱ） complexes;electroluminescent properties144|149|0更新时间：2026-03-03
Cover Story
- “介绍了其在二氧化钼二维薄膜领域的研究进展，专家探索了拉曼光谱对薄膜厚度的依赖关系，为解决薄膜厚度检测问题提供有效手段。”摘要：Monoclinic-phase molybdenum dioxide （m-MoO2） two-dimensional （2D） flakes exhibit outstanding properties comparable to those of noble metals， with tunable performance depending on flake thickness. This makes it highly promising for applications in areas such as environmental monitoring and wastewater sensing. One of prerequisites for achieving high-performance MoO2-based devices is the development of an in-situ， rapid， and non-destructive method for measuring flake thickness. In this work， the dependence of the Raman spectra of MoO₂ 2D thin flakes on flake thickness is investigated， providing a method for in-situ， non-destructive thickness characterization. Excited with 532 nm laser， the shift in the Raman characteristic peak at 127 cm-1 effectively reflects the variation in flake thickness. Furthermore， by adjusting the polarization of the excitation light， the crystal axis orientation of the MoO2 thin flake can be calibrated. The Raman spectroscopic results thus offer an effective and convenient approach for monitoring the flake thickness in MoO2-based device fabrication.关键词：m-MoO2 flakes;Raman spectroscopy;in situ non-destructive detection188|101|0更新时间：2026-03-03
Research Letter
- “无机荧光粉在固态照明与显示领域应用广泛，相关专家系统梳理了间隙发光中心的构筑与表征、间隙发光材料的合成与应用，为无机荧光粉设计提供新视角，为探索材料体系中的新颖发光性质开辟了新方向。”摘要：Inorganic phosphors are widely used in important fields such as solid-state lighting and displays， making them a key focus in the research on luminescent materials. Typically， the design of inorganic phosphors relies on the “crystallographic site engineering”， where activator ions partially substitute suitable metal cations in hosts to form luminescence centers. This strategy requires the inorganic host to provide standard crystallographic sites for activator ions occupancy； otherwise， it is difficult to realize effective doping and subsequently efficient luminescence. In recent years， it has been discovered that even in some hosts lacking standard substitution sites， efficient luminescence can be achieved when activator ions enter interstitial crystallographic sites， leading to the development of interstitial luminescent materials. This review systematically summarizes the construction and characterization of interstitial luminescence centers， and the synthesis and application of interstitial phosphors， while also discussing the opportunities and challenges in future research. The construction of interstitial luminescence centers not only provides a new perspective for developing inorganic phosphors but also holds significant importance for exploring and understanding novel luminescence properties in existing phosphors.关键词：inorganic phosphor;interstitial luminescence center;luminescence property， local structure256|155|0更新时间：2026-03-03
- “介绍了非稀土激活无机玻璃闪烁体的研究进展，专家们探索了过渡金属离子掺杂、氧化物纳米晶复合玻璃及新型钙钛矿玻璃等体系，为解决传统闪烁体面临的原料成本高昂、发射谱带窄等问题提供了新思路。”摘要：Scintillators， serving as core conversion materials for high-energy radiation detection and imaging， play an indispensable role in medical imaging， security inspection， industrial non-destructive testing， and high-energy physics. Although traditional rare-earth ion-doped scintillators （e.g.， Tb3+， Eu3+） exhibit excellent performance， they face challenges such as high raw material costs and narrow emission bands. Non-rare-earth-activated inorganic glass scintillators have emerged as a research focus for the next generation of radiation detection materials， owing to their wide range of activators， broadband emission， and strong environmental adaptability. This article systematically reviews the luminescence mechanisms and recent advancements in such materials， with an in-depth discussion of major material systems， including transition metal ion doping （e.g.， Mn2+， Cu+， Sn2+）， oxide nanocrystal-embedded glass， and novel perovskite glass （lead-based， manganese-based， copper-based）. Innovative strategies in sensitized energy transfer， in-situ crystallization control， halogen coordination engineering， and fiber array fabrication are detailed， along with significant improvements in key performance indicators such as light yield （up to 425% of BGO）， spatial resolution， and thermal quenching resistance （63% intensity retention at 573 K）. The review also highlights existing challenges， including the gap between achieved and theoretical light yields， the trade-off between high crystallization rates and optical homogeneity， insufficient long-term radiation stability， and the need for lead-free alternatives. Future research should focus on multi-scale structural modulation， defect engineering， lead-free design， and device integration technologies to facilitate the practical application of non-rare-earth glass scintillators in advanced medical imaging， industrial non-destructive testing， and extreme environment detection.关键词：Glass Scintillators;non-rare-earth ions;oxide nanocrystal-embedded glass;transition metals;perovskites119|157|0更新时间：2026-03-03
Invited Review
- “介绍了其在显示技术领域的研究进展，相关专家开发了短链、强螯合性柠檬酸配体，实现了纳米晶表面缺陷的高效钝化，为钙钛矿表面调控提供了新方法，为拓展光电子器件应用奠定了基础。”摘要：Metal halide perovskite nanocrystals （CsPbX3） have emerged as promising candidate materials for display technologies due to their excellent optoelectronic properties. However， the weak coordination and long-chain structure of conventional ligands， such as oleic acid and oleylamine （OA/OLA）， result in surface defects and hindered carrier transport， which significantly limit the performance enhancement of perovskite light-emitting diodes （PeLEDs）. In this study， a short-chain， strongly chelating citric acid （CA） ligand was introduced. This ligand forms both coordination bonds and hydrogen bonds with the CsPbBr3 surface through its carboxyl （—COOH） and hydroxyl （—OH） functional groups， effectively passivating surface defects of the nanocrystals. Experimental results combined with density functional theory （DFT） calculations demonstrate that the adsorption energy of citric acid ligands is considerably higher than that of traditional OA/OLA ligands. This leads to a more uniform nanocrystal size distribution， significantly enhanced photoluminescence quantum yield （PLQY）， and a substantial reduction in the non-radiative recombination rate. Green-emitting PeLEDs based on citric acid-modified CsPbBr3 nanocrystals exhibit excellent electroluminescent performance， achieving a peak external quantum efficiency （EQE） of 13.58% and a peak current efficiency of 42.93 cd/A. This study presents a novel strategy for surface defect engineering of perovskites through cost-effective ligand design， and the multidentate chelating mechanism may be applicable to other optoelectronic devices such as photodetectors and solar cells.关键词：perovskite;light-emitting diode;ligands;external quantum efficiency381|205|0更新时间：2026-03-03
Editor's Choice
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Recent Advances in Synthesis of Metal-organic Cages with Aggregation-induced Emission Properties 增强出版 AI导读
“介绍了金属有机笼在发光材料领域的研究进展，专家们探索了以四苯基乙烯等AIE生色团作为配体与多种金属中心配位构建AIE活性MOCs的方法，为新型发光材料开发提供了新思路。”摘要：Metal-organic cages （MOCs） are discrete supramolecular architectures formed through the coordination-driven self-assembly of metal ions and organic ligands. These structures have garnered significant attention owing to their tunable geometries， diverse cavity configurations， and facile functionalization capabilities. In recent years， the rapid advancement of aggregation-induced emission （AIE） materials， along with their distinctive advantages in luminescence mechanisms and functional design， has offered novel insights and opportunities for the development of innovative MOCs. This article provides an overview of the most recent advancements in the synthetic strategies for MOCs exhibiting AIE properties， with particular emphasis on the construction of AIE-active MOCs through the coordination-driven self-assembly of AIE chromophores， such as tetraphenylethylene （TPE） and carbazole， with center metals including Pt（Ⅱ）， Zn（Ⅱ）， Pd（Ⅱ）， and Cd（Ⅱ）. This class of compounds demonstrates not only superior optical properties but also extensive application potential across various advanced fields， including bioimaging， chemical and biological sensing， information storage and encryption， and light-harvesting systems.关键词：Metal-organic cages;aggregation-induced emission;tetraphenylethylene;Supramolecular self-assembly273|200|0更新时间：2026-03-03 - “青色长余辉发光材料稀缺，专家以Ba3Ca2（PO4）3Cl为基质，采用高温固相法成功设计并制备了一种具有优异青色余辉性能的荧光粉，并对其光学信息存储行为进行了研究。”摘要：Cyan long-persistent luminescent materials are relatively rare. In this work， Ba3Ca2（PO4）3Cl was chosen as the host， and a phosphor with excellent cyan afterglow performance was successfully prepared via high-temperature solid-state reaction. Its optical information storage behavior was also investigated. The detailed crystal structure parameters of the host were determined through structural refinement， and its density of states was calculated. Under 349 nm excitation， both Eu2+-doped and Eu2+/Ho3+ co-doped samples exhibited bright cyan emission， with the emission spectra showing two distinct peaks at 455 nm and 493 nm， corresponding to the characteristic 4f65d1-4f7 transitions of Eu2+ at different lattice sites. Compared with the single doped samples， the introduction of Ho3+ created new trap levels in the system， significantly enhancing the cyan afterglow performance. Finally， the afterglow mechanism and optical information storage behavior of the material were further analyzed， providing important reference for the study and application of cyan long-persistent phosphors.关键词：long-persistent phosphor;Eu2+-doped;Ho3+-doped;thermoluminescence;optical information storage227|115|0更新时间：2026-03-03
- “介绍了其在近红外光源领域的研究进展，专家设计并合成了新型BaGa₂Si₂O₈∶Cr³⁺近红外荧光粉，为解决荧光粉热稳定性与发射带宽问题提供了有效方案。”摘要：NIR phosphor-converted LEDs （pc-LEDs）， as a new type of portable near-infrared light source， are widely used in fields such as night vision， plant growth， and medical diagnostics. Their performance largely depends on the characteristics of the developed near-infrared phosphors. However， currently reported near-infrared phosphors generally face challenges of narrow bandwidth and insufficient thermal stability， which significantly limits the performance improvement of NIR pc-LEDs and their broader practical application. To address the urgent need for high thermal stability and broad emission bandwidth in high-performance near-infrared light sources， this study designed and synthesized a novel BaGa₂Si₂O₈∶Cr³⁺ near-infrared phosphor based on Cr³⁺-Cr³⁺ ion pairs. This phosphor can be effectively excited by 450 nm blue light， producing a broadband near-infrared emission （650-1 000 nm） with a full width at half maximum （FWHM） of 134 nm. It exhibits excellent thermal stability， retaining 83.67% of its initial luminescence intensity even at a high temperature of 423 K， outperforming most similar materials. The fabricated NIR pc-LED device based on this phosphor demonstrates potential for applications in night vision and bioimaging， confirming the significant potential of feldspar-type structure materials in developing high-performance near-infrared phosphors.关键词：Near-infrared phosphor;Feldspar-type structure;BaGa₂Si₂O₈;thermal stability;Cr³⁺-Cr³⁺ ion pairs332|189|0更新时间：2026-03-03
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Blue Bipolar Host Materials Achieved Through Electronic Decoupling
via A Twisted Biphenyl Skeleton 增强出版 AI导读“蓝光磷光器件领域迎来新突破，研究团队提出“空间位阻电子解耦”策略，构建新型主体材料，实现高三线态能级与双极传输协同，为提升器件性能提供新思路。”摘要：Addressing the persistent challenge in blue phosphorescent devices of balancing high triplet energy levels with balanced charge carrier transport in host materials， this study proposes a novel “spatial hindrance-induced electronic decoupling” strategy. By constructing D-A-type host materials （N，N-diphenyl-2'-tosyl-［1，1'-biphenyl］- 2-amine/N，N-di-p-tolyl-2'-tosyl-［1，1'-biphenyl］-2-amine） with multiple twisted conformations via the 2，2'-position of a biphenyl skeleton， a synergistic combination of a high triplet energy level （2.66 eV） and bipolar charge transport properties was successfully achieved. Theoretical calculations and experimental characterizations confirm that spatial hindrance effectively suppresses electronic coupling between the donor and acceptor units， maintaining a high-energy structure dominated by localized excited states. Device performance validated the advantages of this strategy in exciton confinement and charge carrier balance， while also revealing limitations in efficiency due to molecular conformational dynamic instability. This study identifies the dynamic conformational stability of molecules as a critical constraint on device efficiency in steric-hindrance-based blue host materials， thus providing a clear design principle for performance breakthrough through enhanced structural rigidity.关键词：biphenyl skeleton;host material;steric hindrance128|59|0更新时间：2026-03-03
Synthesis and Properties of Materials
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Simulation Study of N-polar InGaN-based Red LEDs with Superlattice Electron Deceleration Layer 增强出版 AI导读
“相关研究在氮化物RGB全彩Micro-LED显示领域取得新进展，科研人员提出了一种新型氮极性InGaN基红光LED器件结构，通过n-In0.1Ga0.9N/GaN超晶格电子减速层显著提升载流子限制能力和晶体质量，使器件峰值内量子效率和光输出功率分别提高16%和32%，为高发光效率红光Micro-LED制备提供了新思路。”摘要：The low emission efficiency of InGaN-based red LEDs remains a critical bottleneck for realizing full-color nitride-based RGB Micro-LED displays. Enhancing carrier confinement and crystalline quality in the quantum well （QW） active region is essential to improving optical performance. Here， we propose an N-polar InGaN-based red LED featuring an n-In0.1Ga0.9N/GaN superlattice electron deceleration layer （EDL） while removing the conventional p-AlGaN electron blocking layer （EBL）. Numerical simulations show that the superlattice EDL effectively reduces electron thermal velocity and increases electron capture efficiency within the QWs. Meanwhile， the design maintains a high electron confinement barrier and lowers the hole injection barrier， improving hole capture efficiency and suppressing electron overflow. Compared with a reference N-polar InGaN based red LED with a p-AlGaN EBL， the proposed device achieves a 16% increase in peak internal quantum efficiency and a 32% rise in optical output power. Furthermore， eliminating the p-AlGaN EBL avoids QW crystal degradation caused by high-temperature AlGaN growth， offering a promising route toward high-efficiency InGaN-based red Micro-LEDs.关键词：InGaN;red light-emitting diodes;nitrogen polarity;electron deceleration layer126|72|0更新时间：2026-03-03 - “In the field of light-emitting diodes, researchers have made significant progress. They established a circuit model for single-quantum-well InGaN/GaN LEDs based on standard rate equations. This model investigates the impacts of quantum well thickness on LED performance. Simulated results show that a 4 nm well offers better light-current performance, while a 3 nm well provides a wider 3 dB modulation bandwidth.”摘要：In this paper， we present a circuit model of single-quantum-well InGaN/GaN light-emitting diodes based on the standard rate equations. Two rate equations describe carrier transport processes occurring in separate confinement heterostructure and quantum well respectively， and the third equation describes the varied photons in quantum well. By using the presented model， impacts of quantum well thickness on the static and dynamic performances are investigated. Simulated results show that LED with 4 nm well exhibits better light-current （L-I） performance， but LED with 3 nm well presents wider 3 dB modulation bandwidth. It reveals that high carrier density in quantum well is detrimental to the static performance， but beneficial to the dynamic performance.关键词：single quantum well;Rate equations;Circuit model;L-I performance;modulation bandwidth183|74|0更新时间：2026-03-03
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Fabrication and Performance of A Three-terminal QLED Device
via An AC Electric Field Regulation 增强出版 AI导读“量子点发光二极管（QLEDs）在显示技术领域备受关注，但传统直流驱动模式下存在诸多问题。专家提出基于交流电场调控的三端QLED器件结构，显著提升器件性能，为解决传统QLED技术难题提供新方案，推动其在显示领域的应用。”摘要：Quantum-dot light-emitting diodes （QLEDs） will become a promising candidate in the next-generation display technology due to their high color purity， low power consumption and good solution processability. However， in the traditional DC drive mode， QLED devices are confronted with problems such as severe non-radiative recombination， efficiency degradation and insufficient stability due to unbalanced carrier injections， which limit their application in the display field. Therefore， this paper proposes a three-terminal QLED device structure based on AC electric field regulation， which optimizes the carrier balance through dynamic modulation of the electric field and significantly enhances the device performance. Compared with traditional QLED devices， the external quantum efficiency （EQE） of the three-terminal QLED device has increased from 7.5% to 18.3%， and the brightness has increased from 6 842 cd/m² to 10 374 cd/m²， with increases of 143.7% and 51.6%， respectively. The experimental results show that the three-terminal QLED device can accurately control the electron mobility and effectively suppress non-radiative recombination by utilizing the coordinated regulation of AC waveform， driving voltage and frequency. This solution not only effectively solves the technical problem of electron-hole mobility mismatch in traditional QLED， but also provides a new technological approach for the structural design of high-performance QLED devices， which is expected to promote the wide application of QLED devices in the display field.关键词：quantum-dot light-emitting diodes（QLEDs）;Three-terminal device;AC electric field regulation;carrier injection;external quantum efficiency558|206|0更新时间：2026-03-03 -
A Passively
Q -switched 1 064-nmc -cut Nd∶YVO4 Laser Using Cr4+∶YAG as A Saturable Absorber 增强出版 AI导读“在激光技术领域，研究团队基于第二阈值条件理论，构建了LD端面泵浦凹 - 平谐振腔，以 1%（at.）c 切 Nd∶YVO4 为增益介质、初始透过率 95.09% 的 Cr4+∶YAG 为可饱和吸收体，优化关键参数，实现了高重复频率、窄脉宽与低抖动的稳定被动调 Q 输出，为精密加工等领域提供了依据。”摘要：Guided by the second-threshold theory， we constructed an LD end-pumped concave-plane resonator employing 1%（at.） c-cut Nd∶YVO4 as the gain medium and a Cr4+∶YAG saturable absorber （initial transmission 95.09%）， and systematically optimized the output coupler transmittance （TOC）， cavity length （Lcav）， the focal length ratio of the collimating and focusing lenses （f1∶f2）， and the axial focus position. Experimental results indicate that the resonator’s gain-loss balance is governed primarily by TOC and Lcav. Increasing Lcav reduces the repetition rate and broadens the pulse， whereas shortening focal length of the focusing lens raises the repetition rate at the expense of a slight decrease in average power. The axial focus exhibits a single optimal position. With TOC=14.2%， Lcav=12 mm， f1∶f2=10∶6.43， and fine focus adjustment， stable passively Q-switched operation at a pump power of 1.9 W yielded an average output power of 501 mW， a repetition rate of 217 kHz， a pulse width of 14.4 ns， and timing jitter≤700 ns. These results show that the second-threshold condition provides clear design and tuning guidelines for Nd∶YVO4/Cr4+∶YAG passively Q-switched lasers. By matching output coupling， cavity geometry， and mode size and position to ensure rapid bleaching of the saturable absorber while enabling efficient energy extraction， one can achieve stable high-repetition-rate output with narrow pulse duration and low timing jitter. Owing to its smaller stimulated-emission cross-section and quasi-isotropic behavior in the c-cut configuration， Nd∶YVO4 more readily satisfies the second threshold and supports high-repetition-rate operation， providing a sound basis for applications in precision machining， laser ranging， and nonlinear frequency conversion.关键词：the second threshold condition;c-cut Nd∶YVO4;passively Q-switched;high-repetition-rate142|89|0更新时间：2026-03-03 - “钙钛矿太阳能电池领域迎来新突破，相关专家提出基于二维/三维异质结构的协同钝化策略，成功抑制晶界缺陷与自由基诱导降解，显著提升薄膜结晶质量与表面平整度，使器件光电转换效率达21.15%，且在湿热环境下20天后仍保持较高效率，为高效率与高稳定性兼顾的钙钛矿光伏器件研发提供了新思路与材料策略。”摘要：Perovskite solar cells （PSCs） show great promise owing to their remarkable optoelectronic performance， yet their commercial deployment is hindered by intrinsic instability. We introduce a synergistic 2D/3D heterostructure passivation approach， integrating a TAI-derived 2D perovskite capping layer with the TEMPO radical scavenger to concurrently mitigate grain boundary defects and radical-induced degradation. This strategy improves perovskite crystallinity and film uniformity， lowering the surface roughness from 9.60 nm to 6.25 nm. Carrier lifetime extends from 250 ns to 355 ns， as confirmed by steady-state and time-resolved photoluminescence， indicating suppressed non-radiative recombination. The 2D/3D-based devices demonstrate enhanced recombination resistance （383.7 Ω） and superior charge transport， yielding a champion efficiency of 21.15%. The device retained 71.5% of its initial efficiency after 20 days in a damp-heat environment. This study offers a new materials design paradigm toward efficient and operationally stable perovskite photovoltaics.关键词：perovskite solar cells;Two-dimensional passivation;Heterojunction structure;Radical scavenging;device stability168|67|0更新时间：2026-03-03
- “Researchers have made significant progress in the field of photocatalysis. They developed a recyclable Fe3O4-MoS2 nanocomposite using a liquid exfoliation and solvothermal reaction. This material shows high efficiency in degrading tetracycline under visible light, with 90% degradation in 150 minutes. Its magnetic properties allow easy recovery from water, and it maintains stability over cycles, making it a promising candidate for wastewater treatment.”摘要：In this work， we report a fabrication of recyclable iron oxide decorated MoS2 nanosheets via a facile liquid exfoliation approach and solvothermal reaction for visible-light photodegradation of tetracycline. The prepared Fe3O4-MoS2 was characterized by X-ray diffraction， transmission electron microscopy， X-ray photoelectron spectroscopy， Raman spectroscopy， magnetic hysteresis， and nitrogen adsorption-desorption isotherms. Experimental results indicate that， successful attachment of Fe3O4 nanoparticles to MoS2 sheets has been achieved. The enhanced surface area of Fe3O4-MoS2 induced high rates of adsorption and the adsorbed tetracycline was degraded to 90% after 150 min of visible exposure， which is better than that from pure MoS2. The introduction of Fe3O4 not only enhances the photocatalytic performance of Fe3O4-MoS2， but also enables its convenient recovery from water by an external magnetic field. Furthermore， both the photocatalytic activity and composite phase of Fe3O4-MoS2 were well-retained over cycles. Owing to its efficient photocatalytic activity， good stability and magnetic recyclability， the Fe3O4-MoS2 nanocomposite is considered to be a promising photocatalyst for wastewater treatment.关键词：Fe3O4;MoS2;photocatalyst;magnetic recyclability211|104|0更新时间：2026-03-03
Device Fabrication and Physics
- “硫脲（TU）在工业、农业及医药领域应用广泛，但长期暴露可能带来较高的生物与健康风险，现已被国际癌症研究机构列为3类致癌物。因此，建立快速、高灵敏的TU检测方法对环境监测与食品安全具有重要意义。本研究采用一步水热法成功合成了锌掺杂碳点纳米材料（Zn-CDs）。该材料在氙灯照射下可直接催化无色底物3，3'，5，5'-四甲基联苯胺（TMB）转化为蓝色氧化产物（oxTMB），表现出优异的光催化活性。基于TU对该光催化反应的抑制作用所引起的吸光度与溶液颜色变化，建立了一种线性范围宽、检测限低的比色分析方法，同时也辅以智能手机进行颜色识别，实现了对TU的定量检测。最后，本研究应用于实际水样中TU的测定，结果验证了所构建的方法具有良好的准确度和可行性。”摘要：Thiourea （TU）， as a sulfur-containing organic compound， is widely used in industrial， agricultural， and pharmaceutical fields. Although its acute toxicity is low， long-term exposure may pose high biological and health risks， and it has been classified as a Group 3 carcinogen by the International Union for Research on Cancer. Therefore， establishing a rapid and highly sensitive TU detection method is of great significance for environmental monitoring and food safety. This study successfully synthesized zinc doped carbon dot nanomaterials （Zn CDs） using a one-step hydrothermal method. This material can directly catalyze the conversion of colorless substrate 3，3'，5，5'-tetramethylbenzidine （TMB） to blue oxidation product （oxTMB） under xenon lamp irradiation， exhibiting excellent photocatalytic activity. Based on the absorbance and color changes induced by the inhibition of the photocatalytic reaction by TU， a colorimetric method with a wide linear range and low detection limit was established. Meanwhile， smartphone-based color recognition was employed for quantitative detection of TU. Finally， the proposed method was applied to the determination of TU in real water samples， and the results demonstrated its good accuracy and feasibility.关键词：carbon dots;Zinc doping;photocatalysis;Colorimetric sensing;Thiourea detection402|179|0更新时间：2026-03-03
- “开发了一种基于光驱动CsPbCl₃钙钛矿纳米晶卤素交换的短波紫外线剂量可视化传感薄膜，为UVC消毒设备剂量监测提供新方法。”摘要：This study presents a visual Ultraviolet C（UVC） dosimeter based on the photo-driven halide exchange of CsPbCl₃ perovskite nanocrystals （PNCs）. The system leverages the UVC （254 nm）-induced debromination of hexabromocyclododecane （HBCD） to release bromide ions （Br-）， which subsequently undergo an anion exchange reaction with CsPbCl₃ PNCs. This process forms mixed-halide CsPbClxBr3-x PNCs， resulting in a distinct fluorescence color shift from dark purple to light green under a 365 nm lamp. The fabricated CsPbCl₃/HBCD@PMMA composite film is low-cost and highly sensitive， enabling rationetric and visual monitoring of UVC dose within the range of 0-1.092 J/cm². This operational range effectively covers the typical dosage required for hospital disinfection （0.159-1.068 J/cm²）. Our work provides a facile， reliable， and intuitive strategy for monitoring UVC irradiation， demonstrating significant potential for practical applications in sterilization equipment validation.关键词：perovskite nanocrystals;visual sensing;UVC dosimeter;halide exchange214|138|0更新时间：2026-03-03
Luminescence Applications and Interdisciplinary Fields
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