最新刊期
- 摘要：In this study， a novel luminescent derivative A-TPA-N with both TICT and AIE properties was successfully constructed by introducing triphenylamine donor units and naphthalimide acceptor units into the rigid skeleton of dehydroabietic acid. The luminescence mechanism was analyzed by a mixed-solvent fluorescence testing system， with a focus on the dual-channel emission behavior under different excitation wavelengths， as well as the regulation rules of solvent polarity and aggregation effect on the LE state and ICT state luminescence. Moreover， the natural chiral skeleton successfully induced circularly polarized luminescence. This work provides a new strategy for the development of high-performance natural biochiral luminescent materials， and these materials have potential application value in fields such as display and bioimaging.关键词：dual-channel emission;twisted intramolecular charge transfer;aggregation-induced emission;rosin5|0|0更新时间：2026-04-20
-
Luminescence Mechanisms and Applications of Transition-Metal-Doped Cadmium Sulfide Quantum Dots 增强出版 AI导读
摘要：Cadmium sulfide （CdS） quantum dots， as classical II-VI semiconductor light-emitting materials，have attracted extensive attention due to their excellent optical properties such as high quantum yield and tunable emission spectra. However， their intrinsic band-edge emission mechanism leads to a small stokes shift and severe self-absorption effects. Furthermore， the inherent surface defects associated with their high surface-to-volume ratio easily trigger non-radiative recombination， significantly limiting their further applications in optoelectronic devices and biosensing. To overcome these intrinsic performance bottlenecks， introducing transition metal ions （such as Mn2+， Cu+/Cu2+， Ag+， and Co2+） into the CdS lattice has emerged as an effective strategy to address this core problem. Doping alters the excition recombination pathway by introducing intermediate energy levels， which not only effectively alleviates these limitations but also endows these materials with long luminescence lifetimes， large Stokes shifts， and additional magnetic and photocatalytic functionalities. This review summarizes recent advances in transition-metal-doped CdS quantum dots. First， the luminescence mechanisms and ultrafast carrier dynamics associated with different dopant ions in the CdS matrix are discussed. Second， strategies for improving luminescence efficiency through precise control of dopant locations and surface passivation are reviewed. Finally， recent applications in white light-emitting diodes （LEDs）， fluorescence sensing， photodetectors， and photocatalysis are summarized， and the challenges associated with developing cadmium-free alternatives as well as future research directions in this field are discussed.关键词：CdS quantum dots;transition-metal doping;luminescence mechanisms;fluorescence sensing;optoelectronic devices18|14|0更新时间：2026-04-17 -
Research Progress on Core/Shell Structured Perovskite Nanocrystals and Their Light-Emitting Diodes 增强出版 AI导读
摘要：Metal halide perovskite light-emitting diodes have advantages such as high color purity， wide color gamut， and facile solution processability. In recent years， their performance has developed rapidly， and the external quantum efficiency of the devices has exceeded 30%. “Core/shell” perovskite nanocrystals are particularly excellent in improving luminescent properties and stability because of their unique architecture and customized semiconducting properties. A major focus in this review is the classification of “core/shell” perovskite nanocrystals and the mechanism by which the shell affects the perovskite. It then summarizes how shell coating strategies improve the performance of perovskite materials and devices， along with recent progress in this area. We also discuss the difficulties and challenges of shell-coating technology for fulfilling efficient and stable perovskite light-emitting diodes， and offer an outlook on future development directions.关键词：perovskite;core/shell structure;nanocrystals;light-emitting diodes17|13|0更新时间：2026-04-17 - 摘要：Although the performance of perovskite light-emitting diodes （PeLEDs） has seen significant breakthroughs in the red and green spectral bands， achieving efficient blue PeLEDs remains limited by severe non-radiative recombination in the emission layer and unbalanced charge injection. In this study， we propose a bulk-interface synergistic optimization strategy to improve the luminous efficiency of blue PeLEDs. Experimental results show that EABr doping in the quasi-2D perovskite PEA2（CsPbBr3）2PbBr4 blue-shifts the emission spectrum from 519 nm to 480 nm and effectively suppresses non-radiative recombination. Furthermore， PSS-Na is introduced into PEDOT：PSS to form an m-PEDOT：PSS/PVK bilayer hole transport structure with PVK. The incorporation of PSS-Na increases the work function of PEDOT：PSS， thereby reducing the hole injection barrier and enhancing hole transport efficiency. Meanwhile， the carbazole groups in PVK effectively passivate defects in the light-emitting layer and suppress exciton quenching. Based on this bulk-interface synergistic optimization strategy， the luminance of the PeLEDs increases from 258 cd/m2 to 1087 cd/m2， and the external quantum efficiency （EQE） increases from 4.98% to 12.7%. This work provides a promising pathway for realizing high-performance blue PeLEDs.关键词：Blue PeLEDs;Bulk-interface synergistic optimization;EABr doping;Dual HTL12|15|0更新时间：2026-04-17
- 摘要：Mechanoluminescence， the light emission of solids under mechanical actions， presents broad application prospects due to its unique advantages of self-powering capability， visualized response， and high sensitivity. This review highlights the emerging applications of mechanoluminescence materials in self-powered sensing， engineering structural health monitoring， information security， and biomedical imaging. Strategies for enhancing brightness and spectral regulation are briefly discussed， alongside current challenges such as insufficient mechanistic understanding. Future opportunities in flexible electronics and intelligent sensing are also envisioned. These insights aim to provide valuable references for advancing the practical implementation of mechanoluminescence technologies.关键词：mechanoluminescence;Stress sensing;information security;biomedical applications115|62|0更新时间：2026-04-16
- 摘要：Fluoride ions play a dual role in human health and environmental safety， making rapid， sensitive， and selective detection highly significant. In this work， a novel pyrene diimide derivative （PyDI-APTMS） was synthesized for the detection of fluoride ions. The molecular structure， photophysical properties， fluoride sensing performance， and sensing mechanism were systematically investigated using nuclear magnetic resonance （NMR） spectroscopy， fluorescence spectroscopy， and ultraviolet-visible （UV-Vis） absorption spectroscopy. The results demonstrate that the addition of fluoride ions induces the cleavage of Si–O bonds in PyDI-APTMS， leading to the aggregation of the pyrene diimide core and pronounced fluorescence quenching. This enables rapid and quantitative detection of fluoride ions， with a detection limit of 0.36 μmol∙L-1. The probe exhibits promising potential for visual detection of fluoride ions and quantitative analysis in complex environments.关键词：pyrene diimide;fluoride ions;siloxane;fluorescent probe31|19|0更新时间：2026-04-15
- 摘要：In this study， blue fluorescent carbon dots （B-CDs） were synthesized via a solvothermal method using p-phenylenediamine and o-phenylenediamine as precursors， with a fluorescence quantum yield （QY） as high as 73.63%. A fluorescent sensor was constructed for the rapid detection of Ag⁺ in aqueous samples and L-cysteine （L-Cys） in livestock meat. At the optimal excitation wavelength of 370 nm， the fluorescence at 450 nm was quenched， while the signal at 604 nm was slightly enhanced and red-shifted with increasing Ag⁺ concentration in the range of 20.00-120.00 μM. A good linear response was obtained between the ratiometric fluorescence （F450/F604） and the Ag⁺ concentration. When L-Cys at concentrations ranging from 0 to 200.00 μM was added to the B-CDs/Ag⁺ system， the emission peaks at 450 nm and 604 nm converged to 500 nm， and the fluorescence intensity at this position was enhanced. A favorable linear response was achieved between the B-CDs/Ag⁺ system and L-Cys concentration. A smartphone-assisted visual detection platform for L-Cys was further developed. The sensor exhibited excellent anti-interference ability and reproducibility in real sample analysis. The proposed method was characterized by simple operation， low cost， high sensitivity and good reliability. The fluorescence off-on response provided high selectivity and signal controllability， indicating promising application prospects of the dual-target detection in environmental monitoring， food safety and related fields.关键词：carbon dots;fluorescence sensing;Ag+;L-cysteine35|15|0更新时间：2026-04-15
- 摘要：To meet the urgent demand for narrow-linewidth， ultra-low-noise， and polarization-stable seed sources in advanced high-precision coherent measurement systems such as gravitational-wave detection， a 1550 nm linearly polarized single-frequency fiber laser based on a homemade Er3+/Yb3+ co-doped fluorosulfophosphate fiber is designed and demonstrated. To address the difficulty in simultaneously optimizing multiple performance metrics in short-cavity single-frequency fiber lasers， the reflectivity of the low-reflectivity fiber Bragg grating and the gain fiber length are systematically optimized by numerical simulation prior to cavity construction， thereby improving the output performance. Experimental results show that the laser achieves stable 1550 nm single-frequency linearly polarized emission， with a signal-to-noise ratio exceeding 70 dB， a polarization extinction ratio of 33 dB， a linewidth of 4.95 kHz， and high-frequency relative intensity noise lower than -149 dB/Hz， approaching the theoretical noise limit （-152.9 dB/Hz）. These results indicate that effective co-optimization among narrow linewidth， low noise， and high polarization performance is achieved in this scheme， which is expected to provide a high-quality seed source for highly sensitive optical systems such as gravitational-wave detection.关键词：single-frequency fiber laser;fluorosulfophosphate fiber;linear polarization;gravitational-wave detection92|18|0更新时间：2026-04-14
-
Optical Thermometry Study Based on Negative Thermal Quenching Characteristics of Sc2Mo3O12: Dy3+ 增强出版 AI导读
摘要：Negative thermal expansion （NTE） matrices offer an effective strategy to suppress thermal quenching of rare-earth luminescence for high-sensitivity optical thermometry. Herein， a series of NTE Sc2Mo3O12： xDy3+ phosphors were synthesized via solid-state reaction. Rietveld refinement confirms pure orthorhombic phase （Pbcn） with Dy3+ occupying Sc3+ sites. Under 468 nm excitation， the phosphors exhibit characteristic Dy3+ yellow emission with tunable color from yellow to yellow-green. Benefiting from the NTE host and thermally activated ［MoO4］2-→Dy3+ energy transfer， an anomalous negative thermal quenching is observed （303 K-393 K）， where emission intensity increases with temperature. Based on this characteristic， we constructed two luminescence intensity ratio （LIR） thermometric modes： a single-emission-center non-thermally coupled mode （with absolute sensitivity Sa = 12% K-1 and relative sensitivity Sr = 0.45% K-1 at 513 K） and a dual-excitation non-thermally coupled mode （with Sa = 1.38% K-1 and Sr = 0.77% K-1 at 513 K）.The material exhibits excellent thermal cycling reversibility. Integrating NTE synergy， anomalous thermal enhancement， and high sensitivity， Sc2Mo3O12： xDy3+ shows great promise for high-temperature optical thermometry.关键词：Sc2Mo3O12;Dy3+;negative thermal quenching;negative thermal expansion;optical thermometry;luminescence intensity ratio （LIR）37|13|0更新时间：2026-04-14 - 摘要：Heavy metal ions （Fe3+） and chromate ions （Cr2O72-） pose a serious threat to aquatic ecosystems and human health， and it is urgent to develop efficient and sensitive detection methods. Fluorescent probes based on lanthanide metal-organic frameworks （Ln-MOFs） have attracted much attention in this field. In this study， we used the solvothermal method and 2，2'-bipyridine-4，4'-dicarboxylic acid （H2BPDC） as the ligand to construct two isomorphic new Ln-MOFs， with the molecular formulas of C24H16N6O14Eu2 （CUST-1023） and C24H16N6O14Tb2 （CUST-1024）. Fluorescence spectroscopy studies showed that both could serve as highly selective fluorescent probes for Fe3+ and Cr2O72-， among which CUST-1024 exhibited better sensitivity， with detection limits （LOD， limit of detection） as low as 1.87 μM （Fe3+） and 2.52 μM （Cr2O72-）. Through ultraviolet-visible spectroscopy， infrared spectroscopy， powder X-ray diffraction， and fluorescence lifetime analysis， it was confirmed that the fluorescence quenching mechanism mainly originated from the effective overlap of the ultraviolet absorption band of the analyte and the excitation spectrum of the MOFs， leading to energy competition absorption and dynamic quenching. This study provides a feasible strategy for designing and synthesizing new luminescent materials for the detection of heavy metal ions and oxygen-containing anions in water bodies. CUST-1023 and CUST-1024 can be used as potential fluorescent sensing materials for detecting Fe3+ and Cr2O72- in water.关键词：Pyridinecarboxylic acid ligand;Lanthanide Metal-Organic Frameworks： Fluorescence sensing40|18|0更新时间：2026-04-13
- 摘要：Fiber lasers operating in the 2 μm spectral region possess advantages such as eye safety， high atmospheric transmission， and strong absorption by water molecules， making them of great interest for applications in precision sensing， advanced medical treatment， space optical communication， and defense-related technologies. However， achieving predictable design of high-performance mid-infrared gain glasses remains a significant challenge. In this work， based on the barium-zinc germanate （GeO2-ZnO-BaO） ternary system， the glass-forming region was predicted and verified by combining thermodynamic analysis with targeted experiments. A composition of 60GeO2-20ZnO-20BaO with optimal thermal stability was selected as the host matrix. On this basis， systematic concentration-dependent experiments were carried out， and the optimal doping concentrations of Yb2O3 and Ho2O3 were determined to be 1 mol% and 0.75 mol%， respectively. Under 980 nm laser excitation， the glass exhibits strong emission around 2 μm corresponding to the Ho3+： 5I7 → 5I8 transition， with a fluorescence lifetime of 2.92 ms. The maximum absorption and emission cross sections of Ho3+ are 4.24 × 10⁻21 cm² and 4.35 × 10⁻21 cm2， respectively， which are relatively high among similar glass systems. Furthermore， the phonon-assisted energy transfer mechanism was quantitatively analyzed using the extended overlap integral method. The energy transfer coefficient for the Yb3+： 2F5/2 → Ho3+： 5I6 process is calculated to be 9.88 × 10⁻41 cm6/s， with the single-phonon-assisted process dominating （86.37%）. In addition， the forward energy transfer efficiency is approximately two orders of magnitude higher than that of the backward transfer （Ho3+： 5I6 → Yb3+： 2F5/2）， which is beneficial for suppressing energy back-transfer loss. These results indicate that the Yb3+/Ho3+ co-doped barium-zinc germanate glass， selected via thermodynamic design， exhibits favorable spectroscopic properties and efficient energy transfer characteristics in the 2 μm region， demonstrating its potential as a mid-infrared laser gain material and providing guidance for the design of related glass systems.关键词：Barium-zinc germanate glass;Thermodynamic prediction;Yb3+/Ho3+ co-doping;2 μm luminescence;Phonon-assisted energy transfer43|14|0更新时间：2026-04-13
-
Research progress on synthesis, optical properties and applications of carbon nitride quantum dots 增强出版 AI导读
摘要：Graphene carbon nitride quantum dots （g-C3N4 QDs） have attracted widespread attention due to their unique physical and chemical characteristics. These materials show remarkable advantages in structure， morphology and photoelectric performance. They are characterized by facile chemical functionalization， tunable properties， good biocompatibility and excellent dispersibility in various media， which endow them with promising application prospects in photocatalysis， biomedicine， sensing， bioimaging， solar cells and other fields. This paper reviews the synthesis， optical properties and applications of g-C3N4 QDs， and prospects the optimization of synthetic strategies， functional design and application expansion.关键词：Carbon nitride quantum dots;synthesis;optical properties;application45|9|0更新时间：2026-04-13 - 摘要：Eu2+ can be excited by a broad blue light band and exhibits characteristics of broad wavelength emission. Due to the significant influence of the crystal field environment on Eu2+ ions， selecting appropriate host materials or adjusting host components can regulate the emission properties of Eu2+. This approach also enables the phosphor to be highly compatible with blue light chips， compensating for the red spectral deficiency in commercial white LEDs and enhancing the lighting quality of white LEDs. This study selected the gallate Ca5Ga6O14 as the matrix and synthesized Eu2+-doped red phosphor via a high temperature solid-state method. The luminescence properties were optimized by employing an Al3+ ion substitution strategy to replace Ga3+ cations in the host， and the quantum efficiency can reach 79.2%， and the luminous intensity at 423 K attained 60% of room temperature. By integrating the Ca5Ga5.8Al0.2O14：0.01Eu2+ red phosphor with the commercial yellow phosphor Y3（Al， Ga）5O12：Ce3+ and a blue light chip， a white LED device was fabricated， which exhibits a color rendering index （CRI） of 95.5 and a correlated color temperature （CCT） of 4002 K.This demonstrates the promising application prospects of the red phosphor in the field of white light LEDs.关键词：Eu2+;red phosphor;oxide;white light emitting diodes119|32|0更新时间：2026-04-09
- 摘要：Dual-band lasers operating at 1.0 μm and 1.5 μm are of great importance for applications such as coherent optical communication， two-color microscopy， and multimodal biosensing. However， traditional single-core co-doped fibers face inherent challenges of energy transfer competition and gain coupling between different rare-earth ions， making it difficult to achieve the independent regulation of luminescence at both bands. To address this issue， this study proposes a dual-core fiber design based on a spatial separation strategy， placing Yb3+-doped and Yb3+/Er3+ co-doped regions in two independent cores to effectively suppress energy transfer competition from a structural perspective and achieve independent regulation of 1.0 μm and 1.5 μm dual-band luminescence. Through the optimization and regulation of silicate glass composition combined with molecular dynamics simulation analysis， we fabricated laser glass with high rare-earth doping concentrations. Subsequently， a Yb3+-doped and Yb3+/Er3+ co-doped dual-core fiber （hereinafter referred to as Yb-EY-DCF） was fabricated using the dual-core rod-in-tube method. The two cores are compactly arranged to ensure pumping efficiency， while physical isolation allows independent composition optimization for both bands. Experimental results demonstrate that this spatial separation design effectively avoids the contradiction between concentration quenching and energy transfer efficiency inherent in traditional co-doping schemes， achieving simultaneous emissions at both 1.0 μm and 1.5 μm bands under single 976 nm pump excitation. This Yb-EY-DCF is promising for applications in 1.0 μm and 1.5 μm dual-band fiber lasers or optical amplifiers， particularly in scenarios requiring independent regulation of the two bands or specific power ratios.关键词：silicate glass;dual-core optical fiber;spatial separation;independent regulation;dual-band luminescence116|24|0更新时间：2026-04-09
- 摘要：Information security and anti-counterfeiting technologies are essential for financial systems， commodity circulation， and public safety. However， traditional anti-counterfeiting strategies based on single and static optical features are increasingly insufficient against rapidly evolving counterfeiting techniques. Lanthanide metal–organic frameworks （Ln-MOFs）， featuring high brightness， long decay lifetimes， narrow-band emissions， and tunable responses to light， temperature， pH， and other stimuli， have emerged as ideal candidates for constructing multimodal optical security systems. This review summarizes the luminescence mechanisms， structural design principles， and stimulus-responsive regulation strategies of Ln-MOF， and highlights their representative applications in multi-level encrypted labels， dynamic QR codes， and composite anti-counterfeiting platforms. Key challenges related to stability， intelligence， and tapping the potential of pore channels are discussed， and future development directions of Ln-MOFs in advanced anti-counterfeiting and information storage technologies are outlined.关键词：lanthanide metal-organic frameworks;stimulus response;luminescence mechanism;multimodal anti-counterfeiting117|33|0更新时间：2026-04-08
- 摘要：Circularly polarized luminescent（CPL）materials， which integrate intrinsic optical chirality and highly efficient luminescence， represent a core class of next-generation functional materials for advanced optoelectronic applications. The development of helical polymer materials has injected renewed vitality into the CPL field. A central challenge remains the rational construction of helical polymers featuring both high luminescence efficiency and large dissymmetry factors. This review systematically summarizes synthetic strategies for CPL-active materials based on helical polymers. The promising applications of these CPL materials are further discussed. Finally， future perspectives and research directions in this dynamic field are proposed， aiming to provide theoretical guidance and advance the development of CPL materials.关键词：Polymers;Helices;chirality;circularly polarized luminescence;self-assembly100|76|0更新时间：2026-04-08
- 摘要：In this work， two chiral polymer host materials （R-PBCz-N6 and S-PBCz-N6） based on dibenzo［b］carbazole structure without the need for chiral resolution were designed and synthesized starting from the naturally occurring chiral enantiomers of binaphthylamine. A systematic investigation combining theoretical calculations and experimental characterization was conducted to elucidate the molecular structures， photophysical/electrochemical properties， and device performance of these polymers. Experimental results reveal that the polymers possess a sterically twisted conformation， excellent thermal stability （Td > 460 °C）， and intrinsic circularly polarized luminescence property. Notably， when the achiral narrowband emitter BN-TCZ was doped into the chiral hosts of R-PBCz-N6 and S-PBCz-N6， circularly polarized luminescence was successfully generated， demonstrating that chirality was induced in the achiral guest via the chiral host environment. The photoluminescence dissymmetry factors （glum） reached the order of 10⁻⁴. Organic light-emitting diodes （OLEDs） fabricated via solution processing， using R-PBCz-N6 and S-PBCz-N6 as hosts and BN-TCZ as the emitter， achieved maximum external quantum efficiencies （EQE） of 5.9% and 5.2%， respectively. This work provides a strategic design paradigm for chiral induction and the development of high-efficiency， solution-processed circularly polarized electroluminescent devices.关键词：Chiral polymers;circularly polarized luminescence;Solution process;Host materials88|7|0更新时间：2026-04-07
-
Preparation of Carbon Dots with Antioxidant and Prooxidant Activities for Strawberry Preservation 增强出版 AI导读
摘要：Strawberries are fruits which widely cultivated worldwide， possessing high nutritional value and economic benefits. However， their high water content and vigorous metabolic activity result in an extremely short postharvest shelf life. In this study， a kind of dual-functional ammonium citrate-urea-based carbon dots（AU-CDs）， possessing both antioxidant and pro-oxidant properties， was synthesized via a one-step hydrothermal method. Under dark or low-light conditions （light intensity < 0.1 mW/cm2）， AU-CDs exhibit superoxide dismutase （SOD）-like and catalase （CAT）-like activities， effectively scavenging hydroxyl radicals （·OH）， superoxide anions （·O2-）， hydrogen peroxide （H2O2）， and peroxynitrite anions （ONOO⁻）. Under relatively high light intensity （≥ 0.1 mW/cm2）， AU-CDs demonstrate excellent photocatalytic performance， generating ·O2-， ·OH， and H2O2 through photo-induction. Surface structure modification analysis indicates that the antioxidant capacity of AU-CDs primarily originates from their nitrogen-doped graphitic carbon core and abundant surface functional groups， including hydroxyl （-OH）， carbonyl （-C=O）， carboxyl （-COOH）， and amino （-NH2） groups. Furthermore， energy level structure calculations reveal that the pro-oxidant activity of AU-CDs is attributable to the efficient separation of photogenerated electron-hole pairs. Strawberry preservation experiments demonstrate that AU-CDs effectively delay postharvest weight loss and mold spoilage in strawberries， and significantly inhibit Botrytis cinerea， a common pathogenic fungus responsible for fruit decay. This study provides a novel approach for the green preservation of strawberries and other perishable fruits， contributing to a reduced reliance on conventional chemical preservatives.关键词：carbon dots;antioxidant;prooxidant;strawberry preservation97|35|0更新时间：2026-04-07 - 摘要：Based on the one-pass amplification phenomenon of spontaneous emission， superluminescent diodes （SLDs） exhibit outstanding advantages including high output power， wide emission bandwidth and low temporal coherence. Benefiting from these superior properties， SLDs have shown great application potential in biomedical imaging， precision measurement instruments and optical fiber communication systems， thus becoming one of the research hotspots in the field of third generation semiconductor optoelectronic light sources. This paper systematically reviews the recent research progress of SLD devices， focusing on three key fabrication technologies： active layer material design， waveguide structure optimization and facet treatment improvement. With the continuous development and integration of these technologies， the performance， service stability and integration level of SLD devices have been continuously improved. On this basis， this paper summarizes the typical application progress of SLDs in optical coherence tomography systems， interferometric fiber optical gyroscope systems and optical fiber sensing systems and further demonstrates their unique technical advantages in practical application scenarios. Finally， the development trends are prospected.关键词：superluminescent diode;quantum well;waveguide structure;optical coherence tomography287|116|0更新时间：2026-04-07
- 摘要：Nitrogen-doped carbon dots（N-CDs） were prepared by the hydrothermal method using glucose as the carbon source and m-phenylenediamine as the nitrogen source. The N-CDs have a large Stokes shift（∆λ=100 nm） and can be used for highly sensitive detection of Cr（Ⅵ） and chlortetracycline hydrochloride（CTC）. The functional groups on the surface of N-CDs interact with Cr（Ⅵ） to form a ground-state complex， causing static quenching. At the same time， the photoinduced electron transfer and internal filtering effects intensify the fluorescence quenching. Within the linear range of 0.2 to 300 µmol/L， the detection limit is as low as 35.7 nmol/L. In addition， by integrating the intelligent imaging technology of mobile phones， the visual quantitative analysis of Cr（Ⅵ） can be achieved， with a detection limit of 0.38 μmol/L. Based on static quenching and the inner filter effect， N-CDs can also be used to detect CTC within the range of 0.1 to 200 µmol/L， with a detection limit of 10.4 nmol/L. The method has been applied to the detection of Cr（Ⅵ） in electroplating wastewater， CTC in milk and chlortetracycline hydrochloride ointment. The spiked recovery rates ranged from 94.0% to 104.0%， and the relative standard deviations were all less than 3.3%. The method offers a practical and feasible solution for rapid detection in the fields of environment， food， and medicine， and also provides a new idea for portable and visual detection of Cr（Ⅵ）.关键词：Nitrogen-doped carbon dots;visual detection;Cr（Ⅵ）;Chlortetracycline hydrochloride;Quenching mechanism133|39|0更新时间：2026-04-03
- Address：No.3888 Dong Nanhu Road, Changchun, Jilin, China Postal code：130033
- Tel：0431-86176862 Email：fgxbt@126.com
- Technical support is provided by Beijing Founder electronics co., LTD 吉ICP备11002662号-17
京公网安备11010802024621 - It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
- Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.
0