最新刊期
卷 47 ， 期 1 ， 2026
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Influence of C6- and C9-substituents on Photoelectric Properties of Phenanthroimidazole Derivatives 增强出版
摘要：To explore the influence of substituent at C6 and C9 positions of phenanthroimidazole， three hot exciton blue emitters TPAPPI-Py， TPAPPI-mPy and TPAPPI-Qu were synthesized. Based on TPAPPI-Py， TPAPPI-mPy and TPAPPI-Qu as the emitting layers in OLEDs， the EQEmax of the devices are 4.80%， 5.25% and 3.29% with CEmax of 5.46， 5.05， 3.75 cd·A-1， respectively. Those results indicated that the weak electron-withdrawing substituents at the C6 and C9 positions did not affect the emission wavelength， but was beneficial for enhancing carrier transport capability. The efficiency roll-off of the device remains below 10% in the luminance range from 1-1 000 cd·m-²， indicating their excellent electroluminescence.关键词：phenanthroimidazole;hot exciton;substituent;organic light-emitting device（OLED）678|315|0更新时间：2026-01-30
Cover Story
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Recent Advances in Full-color ZnSeTe Quantum Dots Toward High-performance Light-emitting Diodes 增强出版 AI导读
“量子点发光二极管（QLED）作为新一代自发光显示技术，因其低功耗、高色纯度和广色域优势备受关注。然而，目前高效QLED主要依赖CdSe或含Pb钙钛矿量子点，其重金属带来的环境风险限制了产业化发展。无镉无铅的环保型量子点材料成为推动QLED大规模商业化的核心替代方案。在众多候选体系中，ZnSeTe量子点凭借优异的发光性能和独特能带调节机制，可实现从450 nm蓝光到700 nm红光的宽范围连续发射，是最具潜力的单一体系环保型全彩发光材料。尽管如此，ZnSeTe体系仍面临高Te含量引起的晶格应变、界面缺陷及器件电荷传输失衡等技术挑战。本文系统综述了ZnSeTe量子点的合成及其在QLED应用中的最新进展，重点围绕蓝、绿、红三基色发射的优化策略，分析了组分工程、壳层工程和表面工程的作用机理及最新成果，并展望了其在稳定性、规模化合成与器件效率方面的未来发展方向。”摘要：Quantum dot light-emitting diodes （QLEDs） have emerged as a promising next-generation self-emissive display technology， offering advantages such as low power consumption， high color purity， and wide color gamut. Currently， high-performance QLEDs largely rely on toxic CdSe or Pb-containing perovskite quantum dots， whose heavy metal content presents environmental risks that restrict industrialization. Consequently， the development of Cd/Pb-free， eco-friendly quantum dot materials has become the core alternative for driving large-scale QLED commercialization. Among various candidates， ZnSeTe quantum dots stand out as the most promising single-system full-color emitter， due to their superior luminescence properties and unique band structure tuning mechanism， which enables continuous emission across a broad range from 450 nm blue light to 700 nm red light. Nevertheless， the ZnSeTe system still faces critical challenges， including lattice strain induced by high Te content， interfacial defects， and carrier transport imbalance in devices. This review systematically summarizes the latest progress in the synthesis of ZnSeTe quantum dots and their applications in QLEDs. Focusing on optimization strategies for achieving blue， green， and red primary colors， we analyze the mechanisms and the latest achievements of composition engineering， shell engineering， and surface engineering. Finally， we discuss the future outlook regarding challenges in stability， scale-up synthesis， and device efficiency.关键词：Eco-friendly quantum dots;QLED;ZnSeTe;luminescence performance991|416|0更新时间：2026-01-30
Mini Review
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A Combined DFT and Machine Learning to Predict Bond Lengths in Rare Earth-doped Inorganic Crystals 增强出版 AI导读
“介绍了其在无机晶体材料领域的研究进展，相关专家结合第一性原理计算与机器学习，实现了稀土离子局域结构键长的准确预测，为稀土掺杂无机晶体材料的结构和性能设计提供了重要途径。”摘要：Local structures significantly influence the stimulated radiation of rare earth ions in inorganic materials. However， quickly obtaining local structure information remains a challenge. In this investigation， we combined first-principles calculation with machine learning. From the calculation results， it can be shown that the ionic radii， coordination numbers， ligands， and polyhedral shapes of rare earth ions impact the local structural bond lengths of rare earths. Using the BPNN （Back-propagation neural network） and SVR （Support vector regression） algorithms， considering 22 chemical and structural influencing factors， we were able to accurately predict the bond lengths of rare earth ions. The contributions of these chemical features were quantitatively analyzed and found multiple factors affecting the bond lengths. Based on the learned model， the bond lengths of 96 unknown rare earth inorganic crystals were predicted， and validated with first principles calculation. The high feasibility demonstrates that this easy and quick evaluation method for local structures of rare earth ions provides a valuable approach for predicting， designing， and optimizing the local structures and properties of functional inorganic materials.关键词：Bond lengths;Local structures;Rare earth-doped inorganic crystal801|384|0更新时间：2026-01-30 -
Preparation of High-performance BaMgSiO4-based Photochromic Ceramics by Tape-casting Method 增强出版 AI导读
“介绍了其在光致变色材料领域的研究进展，相关专家采用固相法与流延法制备了BaMgSiO4基系列光致变色陶瓷，对比发现流延法可优化材料微观结构，提升变色与力学性能，为陶瓷背板多功能显示应用展现了良好前景。”摘要：Inorganic photochromic materials have wide applications in intelligent displays， optical storage， optical switching， and so on. Currently， the main preparation method for photochromic ceramics is the solid-state method， however， the materials fabricated by this method still face poor mixing uniformity， low mass transfer efficiency， and inhomogeneity during the high-temperature sintering process. Additionally， it is difficult to prepare larger size samples， then restricting their practical applications. In this work， a series of BaMgSiO4∶0.5%Eu2+/x%Fe3+（mole fraction） photochromic ceramics were prepared using both the solid-state method and the tape-casting method. By comparing the ceramics prepared by these two methods， it was demonstrated that the tape-casting method can optimize the material’s microstructure， thereby enhancing its color-changing and mechanical properties. In terms of mechanical properties， the ceramics prepared by the tape-casting method exhibit higher density and lower porosity； moreover， both their hardness and fracture toughness are superior to those of the ceramics prepared by the solid-state method. Furthermore， the prepared BaMgSiO4-based ceramics possess excellent reversible photochromic properties. Under 365 nm ultraviolet （UV） or sunlight irradiation， these samples can change their colors from white to pink， and the coloration contrast reaches 92.9%. Additionally， they have a fast response speed， can realize the maximum coloration contrast within 6 s. Therefore， the tape-casting preparation method demonstrates significant prospects for photochromic materials in ceramic backplanes and multi-functional display applications.关键词：photochromic ceramics;tape-casting method;coloration contrast842|346|0更新时间：2026-01-30 - “聚焦智能纺织品领域，专家构建了CsPbBr3/ZnS/TPU复合体系，攻克了钙钛矿量子点无法直接响应交流电的难题，为智能纺织品开发高色域柔性光源等核心组件提供了可产业化的技术路径。”摘要：In response to the urgent demand for electroluminescent devices in smart textiles， this study proposes a novel perovskite-based alternating current electroluminescence （ACEL） fiber solution. Focusing on the characteristic that perovskite quantum dots， despite their excellent color purity， cannot directly respond to alternating current， a technical breakthrough is achieved by constructing a CsPbBr3/ZnS/TPU composite system. Wet spinning is used to continuously prepare coaxial fibers， and the Förster energy resonance transfer mechanism between ZnS and CsPbBr3 is utilized to effectively convert alternating current energy into light radiation， with flexible encapsulation achieved through thermoplastic polyurethane （TPU）. The obtained fibers exhibit narrow-band pure green emission （CIE coordinates 0.213 8， 0.642 5） under alternating current fields， maintaining over 82% of their initial brightness after 500 mechanical bends， and possess excellent pattern weaving construction capabilities. This research overcomes the challenge of the coordinated adaptation of the material’s photoelectric response mechanism and flexible substrate in wearable optoelectronic devices， providing an industrializable technical path for the development of high-color-domain flexible light sources and dynamic interactive interfaces in smart textiles.关键词：perovskite;AC electroluminescence;Coaxial wet spinning;Energy resonance transfer;Weavable patterning569|188|0更新时间：2026-01-30
Editor's Choice
- 摘要：The quality of biological fluorescence imaging is determined not only by the emissive brightness of the organic dyes but also by the excitation wavelength. The longer the excited wavelength， the weaker the light-tissue interaction， which can reduce photon scattering and effectively lower tissue absorption and autofluorescence. This helps improve signal-to-background ratio， spatial and temporal resolution， and penetration depth. Therefore， fluorescence imaging excited by the second near-infrared window （NIR-Ⅱ） enables deeper and more precise biological imaging and detection， offering greater potential for clinical diagnosis and therapy of diseases. This review first explains the principles and advantages of NIR-Ⅱ fluorescence imaging， then reviews the molecular design strategy and research progress of several important classes of NIR-Ⅱ-excited fluorescent dyes and their applications in medical diagnostics of NIR-Ⅱ fluorescent probes and the challenges in clinical translation， with an outlook on future development directions.关键词：NIR-Ⅱ;fluorescence imaging;organic fluorophores;benzothiadiazole376|249|0更新时间：2026-01-30
- “聚焦超分子材料光物理性能，研究团队构建了水溶性超分子化合物PA84S，其独特荧光特性源于簇聚集诱导发光机制。该成果为超分子聚集体在荧光传感领域应用开辟新方向。”摘要：In contrast to conventional supramolecular polymers focusing on mechanical properties， this work investigates the photophysical performance of supramolecular materials， reporting a fully water-soluble aliphatic supramolecular compound （PA84S） self-assembled from octanediamine and succinic acid via ionic and hydrogen bonds. PA84S exhibits unique concentration-dependent and excitation-dependent fluorescence in aqueous solution， originating from cluster-triggered emission within the supramolecular structure. By integrating dynamic light scattering， pyrene fluorescence probing， Zeta potential， and conductivity measurements， the self-assembly behaviors of PA84S were systematically characterized， confirming the formation of ordered aggregates through synergistic interactions in water and determining the critical aggregation concentration for fluorescence. The emission enhancement is directly related to heteroatom clusters constructed by ionic bonds （—COO-·+NH3—） and hydrogen bonds， where through-space conjugation creates luminescent channels and restricts intramolecular motions. Leveraging this unique fluorescence， PA84S serves as a novel supramolecular probe for selective and highly sensitive detection of Fe3+ ions and tetracycline. This work provides a new strategy for constructing water-soluble luminescent materials from non-conjugated building blocks and demonstrates the potential of supramolecular assemblies in fluorescence sensing applications.关键词：Amide salt;supramolecular assembly;cluster-triggered emission;fluorescence sensing;ion detection476|272|0更新时间：2026-01-30
- “CLLB∶Ce晶体研究取得新进展，专家通过布里格曼法成功制备不同Zn²⁺浓度共掺杂晶体，系统研究其结构与性能，发现Zn²⁺共掺杂可有效改善晶体闪烁性能，提升能量分辨率，为核辐射探测领域应用提供新思路。”摘要：Cs2LaLiBr6∶Ce （CLLB∶Ce） crystals exhibit excellent energy resolution and high light yield. However， their scintillation properties such as neutron/γ ray discrimination still require further improvement. In this study， CLLB∶Ce crystals co-doped with different Zn2+ concentrations， with a size of Φ10 mm×50 mm， were successfully prepared via the Bridgman method. This paper systematically investigates the effects of Zn2+ co-doping on the crystal structure， scintillation properties， and defect characteristics of CLLB∶Ce crystals. Thermoluminescence （TL） was used to analyze the position and quantity of defect energy levels in the crystals for different samples. Combined with temperature-dependent X-ray excited emission spectroscopy， the influence mechanism of defects on the scintillation mechanism was revealed. The results presented that the defect energy level was reconstructed after Zn2+ co-doping. The scintillation process was tunable by adjusting the type and quantity of defect， and altering the fast/slow component ratio of decay time. With 0.1% Zn2+ co-doping， the energy resolution was improved from 3.8% to 3.2% under 137Cs@662 keV gamma ray irradiation， better than that of LaBr3∶Ce. The strategy of Zn2+ co-doping is an effective method to enhance the scintillation properties of CLLB∶Ce crystal. It is possible that the n/γ discriminate is improved by tuning the decay time. CLLB∶Ce，Zn crystal has potential application prospects in the field of nuclear radiation detection.关键词：scintillation crystal;CLLB∶Ce;Neutron/γ ray discrimination;scintillation property;Thermoluminescence （TL）;Mechanism discussion449|253|0更新时间：2026-01-30
- “Yb3+掺杂Lu2O3晶体凭借耐高温、高密度及亚纳秒级衰减特性等优势，成为极端使役环境下超快闪烁探测器的理想材料。相关专家利用温度梯度法制备了超快闪烁晶体Yb∶Lu2O3，并对其性能进行了研究。热重-差示扫描量热、热机械分析和抗压强度测试表明氧化镥具备良好的热稳定性和抗压性。利用137Cs产生的γ射线源激发观察到衰减时间为1.5 ns，绝对光产额为56 photons/MeV。首次测试了Yb∶Lu2O3超快闪烁晶体的绝对光产额。这标志着Yb∶Lu2O3晶体在高能物理实验领域展现出显著的候选材料潜力，其高效辐射响应和优异的高温、高压服役性为下一代闪烁体器件的性能优化提供了新思路。”摘要：Yb3+-doped Lu2O3 crystal has emerged as an ideal material for ultrafast scintillation detectors in extreme service environments owing to its advantages of high temperature resistance， high density， and sub-nanosecond decay characteristics. This work reports on the study of the relevant performance of ultrafast scintillation Yb∶Lu2O3 crystal grown by the temperature gradient technique. Thermogravimetric-differential scanning calorimetry， thermomechanical analysis and compressive strength tests demonstrated that Lu2O3 possessed excellent thermal stability and compressive strength. Irradiation with a 137Cs γ-ray source revealed a decay time of 1.5 ns and an absolute light yield of 56 photons/MeV. This study marks the first experimental measurement of the absolute light yield of Yb∶Lu2O3 ultrafast scintillation crystals. This finding demonstrates the significant potential of Yb∶Lu2O3 crystals as promising candidate materials for high-energy physics experiments and nuclear medical imaging. Its high radiation detection efficiency and excellent operational stability under high-temperature and high-pressure conditions offer a promising strategy for optimizing the performance of next-generation scintillator devices.关键词：Yb∶Lu2O3;crystal growth;ultrafast scintillation;extreme service environment487|176|0更新时间：2026-01-30
- “采用高温固相法制备了Sm3+掺杂的CaLa0.5Y0.5AlO4荧光粉。研究了其晶体结构、激发和发射光谱等性能。在紫外和可见光激发下，样品发出明亮的橙红色光，发光强度随Sm3+离子掺杂浓度增加先增强后减弱，当掺杂浓度为0.007 5 mol%时发光强度最强，最强峰位于602 nm。样品CIE坐标变化小，色彩稳定性好，且具有负热猝灭效应和良好的热稳定性。将其应用于紫芯片白光LED，色坐标为（0.32，0.32），显色指数为88.5，色温为5709 K。研究表明，该荧光粉是一种新型的可用于白光LED的橙红色荧光粉。”摘要：Sm3+ doped CaLa0.5Y0.5AlO4 phosphors were synthesized by the solid-state reaction method. The crystal structure was analyzed by the X-ray diffraction patterns. The photoluminescence excitation and emission spectra， photoluminescence decay curves， the CIE coordinates and temperature dependent emission spectra were studied. The bright orange-red emission was observed under the UV and visible light excitation， the integrated luminescence intensities increased first and then decreased with increasing Sm3+ concentration， reached a maximum when the Sm3+ content was 0.75%， the strongest emission peak was located at 602 nm. With variations in Sm³⁺ doping concentration and temperature， the CIE coordinates of the samples exhibited slight changes， indicating that the color stability of the samples was excellent. The samples exhibited excellent thermal stability， a remarkable negative-thermal-quenching effect was observed. The sample was applied to violet chip white LED， the CIE was （0.32， 0.32）， CCT was 5 709 K， and Ra was 88.5. These results indicate that CaLa0.5Y0.5AlO4∶Sm3+ phosphor could be a new type of orange-red phosphor that can be used in white LEDs.关键词：Sm3+;phosphor;white LED591|168|0更新时间：2026-01-30
- “采用高温固相法制备了Sr6GdAl（BO3）6∶xDy3+荧光粉，研究了其晶体结构、发光特性、能量传递机理、荧光衰减曲线、色坐标和变温光谱。在紫外光激发下，样品在315 nm处的发射峰源于Gd3+的6P7/2→8S7/2能级跃迁；484 nm和578 nm处的发射峰源于Dy3+的4F9/2→6H15/2、4F9/2→6H13/2能级跃迁，Sr6GdAl（BO3）6∶xDy3+荧光粉发出白光。随着Dy3+掺杂浓度变化，样品色坐标与CIE色度图中的“理想白光点”（x=0.33，y=0.33）比较接近。样品中存在Gd3+到Dy3+的能量传递，能量传递效率高达90.59％。样品表现出负热猝灭效应，当温度为543 K时，发光强度为室温的103.6％，具有良好的热稳定性。结果表明，Sr6GdAl（BO3）6是一种潜在的可用于紫外保健灯的荧光粉，Sr6GdAl（BO3）6∶xDy3+是一种可被紫外光激发的白光荧光粉。”摘要：The Sr6GdAl（BO3）6∶xDy3+ phosphors were synthesized by high-temperature solid-state reaction. The crystal structure， luminescence properties， energy transfer mechanisms， photoluminescence decay curves， CIE coordinates and temperature dependent emission spectra were investigated. Under UV excitation， the emission peak at 315 nm is attributed to the 6P7/2→8S7/2 transition of Gd3+， the emission peaks at 484 nm and 578 nm are attributed to the 4F9/2→6H15/2 and 4F9/2→6H13/2 transitions of Dy3+， the Sr6GdAl（BO3）6∶xDy3+ phosphors exhibited white emission. The CIE coordinates of the samples with different Dy3+ concentrations were close to the ideal white point （x=0.33， y=0.33） in the CIE chromaticity diagram. Energy transfer from Gd3+ to Dy3+ was observed in the samples， with an efficiency as high as 90.59%. A negative thermal quenching effect was observed， where the emission intensity at 543 K was maintained at 103.6% of the room-temperature value， indicating excellent thermal stability. These results indicate that Sr6GdAl（BO3）6 is identified as a potential phosphor for UV healthcare lamps. Furthermore， the Dy3+-doped Sr₆GdAl（BO₃）₆∶xDy³⁺ is a white-light-emitting phosphor that can be excited by ultraviolet light.关键词：phosphors;Dy3+ doped;energy transfer;photoluminescence504|126|0更新时间：2026-01-30
Synthesis and Properties of Materials
- “量子点发光二极管（QLED）作为新一代显示技术的重要发展方向，其电子传输层（ETL）通常采用氧化锌（ZnO）材料。然而，ZnO过高的电子迁移率易导致发光层（EML）中载流子注入失衡，同时其表面氧空位等缺陷会引发非辐射复合。本研究创新性地引入六方氮化硼（h-BN）这一典型二维材料，在EML与ZnO界面间构建电子阻挡层。实验结果表明，h-BN的引入有效改善了器件内部载流子平衡，显著抑制了ZnO缺陷导致的发光猝灭。经h-BN界面修饰后，QLED器件的外量子效率（EQE）和电流效率（CE）分别达到17.31%和18.80 cd/A，相较参照器件实现了12.4%和7.43%的提升。该研究不仅揭示了二维材料在QLED器件中的创新应用价值，更为其在显示技术领域的深入开发提供了新的研究思路。”摘要：Quantum dot light-emitting diodes （QLEDs） have emerged as a novel class of next-generation displays， with zinc oxide （ZnO） serving as a critical electron transport layer （ETL）. However， the high electron mobility of ZnO often gives rise to unbalanced charge injection into the emissive layer （EML）. Meanwhile， surface defects such as oxygen vacancies induce non-radiative recombination and luminescence quenching. Herein， we introduced hexagonal boron nitride （h-BN）， a typical two-dimensional material， as an electron barrier layer between EML and ZnO layer. Incorporating h-BN effectively mitigates the charge carrier imbalance and suppresses the luminescence quenching caused by ZnO. Ultimately， the modification enhances the external quantum efficiency （EQE） and current efficiency （CE） of the QLED device to 17.31% and 18.80 cd/A， corresponding to relative increases of 12.34% and 7.43%， respectively， compared to reference devices. This innovative application of two-dimensional materials in QLED not only optimizes QLED device performance but also opens new avenues for the future utilization of such materials in display technology.关键词：QLED;hexagonal boron nitride;electron barrier layer;charge injection balance;interface modification481|167|0更新时间：2026-01-30
- “在半导体激光器领域，专家提出基于临界角调控的光束整形方法，有效解决多有源区光束离散问题，显著提升光束质量和光纤耦合效率，为激光器性能优化提供新方案。”摘要：In tunnel-junction-based semiconductor lasers with cascaded multi-active-region structures， the emission regions are typically optically isolated in the lateral direction， leading to multiple incoherent and spatially separated far-field patterns. After fast-axis collimation， the output beam exhibits a series of angularly symmetric but discrete patterns， which significantly increase the far-field divergence and maintain a multi-spot intensity profile. When the beam is focused or imaged， this angular separation degrades the focal quality， thereby limiting the fiber-coupling efficiency and output brightness. To address this issue， a beam-shaping method based on critical-angle-controlled total internal reflection （TIR） prisms is proposed. The design employs a TIR prism array in combination with a symmetric high-reflectivity prism to reconstruct the angular distribution of emissions from multiple active regions via selective reflection near the critical angle. As a result， the initially discrete triple-peak distribution in angular space is transformed into a single concentrated peak， reducing the fast-axis divergence from 0.52° to 0.11°， corresponding to an angular compression ratio of approximately 79%. This effectively enhances the directional uniformity of the multi-emitter output beam. By integrating a fast-axis dark-zone compression prism with a Galilean beam-compression system， the beam parameter products （BPPs） of both the fast and slow axes are further balanced. After beam shaping， the fast-axis BPP decreases from 54.6 mm·mrad to 22.8 mm·mrad， while the focal-plane intensity evolves from a discrete triple-spot pattern to a single compact spot. The focused beam is efficiently coupled into a 300 μm-core fiber with a numerical aperture of 0.22， achieving a peak output power of 630 W and an optical-to-optical conversion efficiency of 78.8%. Furthermore， analyses of assembly and fabrication tolerances， thermo-mechanical coupling， and spectral dispersion as well as thermo-optic effects confirm the stability and feasibility of the proposed TIR-based beam-shaping and combining scheme， demonstrating its strong potential for high-brightness multi-emitter semiconductor laser systems.关键词：tunnel-junction cascaded multi-active-region semiconductor laser;fast-axis collimation;beam shaping;angular correction;beam quality;fiber coupling460|140|0更新时间：2026-01-30
Device Fabrication and Physics
- “介绍了其在污染物检测领域的研究进展，专家们深入探讨了发光共价有机框架材料在检测重金属离子、抗生素等污染物中的应用，为解决传统检测方法的不足提供了新思路。”摘要：Environmental pollutants， such as heavy metal ions and organic contaminants， have emerged as a severe global challenge. How to effectively detect environmental pollutants has become a scientific problem， which has garnered extensive attention from a growing number of scientists and engineers. Conventional detection methods are often hampered by high costs， poor portability， and operational complexity. Therefore， we need to design and develop rapid， simple， highly selective and sensitive detection techniques for pollutant monitoring. Luminescent covalent organic frameworks （LCOFs）， a class of porous luminescent materials interconnected by covalent bonds， possess highly ordered crystal structures， excellent stability， and tunability， demonstrating significant potential in the field of pollutant detection. This review begins by outlining the types， synthetic strategies， and procedure methods of LCOFs. Furthermore， various applications in pollutant detection have been explored， with a detailed discussion on their use in identifying heavy metal ions， antibiotics， persistent organic pollutants， endocrine disruptors， nitro-explosives， and other environmental contaminants. Finally， the review highlights the critical role of LCOFs in environmental monitoring and offers perspectives on future development trends.关键词：luminescent materials;Covalent organic frameworks;Pollutant detection;research progress473|167|0更新时间：2026-01-30
- “相关研究团队在荧光检测领域取得新进展，研究人员采用一步水热合成法成功合成了铜/氮共掺杂碳量子点（Cu/N-CQDs），其荧光量子产率显著提升至30%。研究发现，药物柳氮磺吡啶（SSZ）能有效猝灭Cu/N-CQDs的强荧光性能，并在0.5~45 μmol/L浓度范围内呈现良好的线性响应关系，检出限低至1.7 nmol/L。该检测机理可能是基于SSZ分子与Cu/N-CQDs形成了不发光的复合物产生的静态猝灭过程。将该方法应用于市售SSZ片剂的含量测定，并进行样品和血清中SSZ的回收实验，回收率可达95.13%~103.2%，相对标准偏差小于5%，表明该方法准确、灵敏、选择性好。”摘要：In this study， with citric acid as the carbon source， histidine as the nitrogen source， and copper sulfate as the auxiliary reagent， copper/nitrogen co-doped carbon quantum dots （Cu/N-CQDs） with high fluorescence performance were successfully prepared by a one-step hydrothermal method. The co-doping of Cu/N enriches the functional groups on the surface of CQDs， effectively regulates the surface state of CQDs， and significantly increases the fluorescence quantum yield of Cu/N-CQDs to 30%. The research found that sulfasalazine （SSZ） can effectively quench the strong fluorescence performance of Cu/N-CQDs and shows a good linear response relationship within the concentration range of 0.5-45 μmol/L， with a detection limit as low as 1.7 nmol/L. This detection mechanism may be based on the static quenching process generated by the formation of non-luminescent complexes between SSZ molecules and Cu/N-CQDs. This method was applied to the content determination of commercially available SSZ tablets， and experiments on the recovery of SSZ in samples and serum were conducted. The recovery rate could reach 95.13% to 103.2%， with a relative standard deviation of less than 5%. It indicates that this method is accurate， sensitive and has good selectivity.关键词：Co-doped carbon quantum dots;fluorescent probe;Sulfasalazine552|194|0更新时间：2026-01-30
- “以柠檬酸和乙二胺为前驱体，通过水热法制备碳点（CDs），并采用原位封装策略将其复合到MOF-76（Tb）的孔道结构中，成功制备了CDs@MOF-76（Tb）复合材料。该复合材料不仅保持了MOF-76（Tb）框架的结构稳定性，还兼具CDs和MOF-76（Tb）的发光特性。经过热处理、长时间水溶液浸泡、0.0~1.0 mol·L-1 NaCl溶液及pH=3~11等多种环境条件测试，材料表现出优异的环境耐受性，展现出作为荧光传感器的应用潜力。此外，CDs@MOF-76（Tb）复合材料对水环境中的Cr（Ⅵ）阴离子（包括CrO42-和Cr2O72-）表现出高选择性和高灵敏度检测能力，其猝灭效应常数KSV分别为5.01×103 L·mol-1和1.13×104 L·mol-1，检测限（LOD）分别为1.06 μmol·L-1和0.47 μmol·L-1。同时，该材料还可作为比率荧光探针，选择性检测Bi（Ⅲ）离子，其KSV为4.53×103 L·mol-1，LOD为1.01 μmol·L-1。因此，CDs@MOF-76（Tb）复合材料对目标检测物具有良好的抗干扰性和循环稳定性，在环境监测领域具有广阔的应用前景。”摘要：In this study， carbon dots （CDs） were prepared by hydrothermal method using citric acid and ethylenediamine as precursors， and the CDs were synthesized into the pore structure of MOF-76（Tb） by in-situ encapsulation strategy. CDs@MOF-76（Tb） composite material was successfully prepared. The composite not only maintains the structural stability of MOF-76（Tb） frame， but also possesses the luminescence characteristics of CDs and MOF-76（Tb）. After heat treatment， long-term immersion in aqueous solution， 0.0-1.0 mol·L-1 NaCl solution and pH=3-11 and other environmental conditions， the material showed excellent environmental tolerance， showing its application potential as a fluorescence sensor. In addition， CDs@MOF-76（Tb） composites show high selectivity and sensitivity for the detection of Cr（Ⅵ） anions （including CrO
- “介绍了其在苯系物蒸气检测领域的研究进展，相关专家设计合成了两种基于苝二酰亚胺衍生物的荧光探针，为开发新型苯系物蒸气检测的荧光变色型柔性传感器提供了可行的方法。”摘要：The development of portable fluorescent color-changing flexible sensors for the detection of benzene series vapors is highly significant given their volatility and toxicity. To achieve ultra-efficient visual detection， two fluorescent probes HO‐PDI-OH and UPy-PDI-UPy were developed by employing perylene diimide as the fluorescent unit， tetraethylene glycol ethoxy group as the side chain， and hydroxyl or urea pyrimidinone as the spatial constraint group， respectively. Flexible fluorescent sensors S1 and S2 were then fabricated by combining the probes with polyurethane matrix. It was indicated that the spatial confinement effect provided by the spatial constraint groups in synergy with the polyurethane matrix determined the detection performance. Specifically， the sensor S2 based on the urea pyrimidinone spatial constraint group UPy-PDI-UPy demonstrated remarkable performance in benzene vapor detection. It exhibited a broad fluorescence color-changing range from orange to green， a rapid detection speed of less than 3 minutes， and a low detection limit of 8.1 μmol/L， which suggested its potential as a specific fluorescent sensor for benzene vapor. This work offers a viable strategy for novel fluorescent color-changing flexible sensors for detecting benzene series vapor.关键词：perylene diimide;benzene series vapor;fluorescent sensor;fluorescence color-changing;flexible539|150|0更新时间：2026-01-30
Luminescence Applications and Interdisciplinary Fields
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