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学者姓名:林翠英

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< Page ,Total 11 >
Oxygen vacancy-enriched NiO/NiPc heterojunction for highly efficient and sensitive non-enzymatic glucose sensing SCIE
期刊论文 | 2025 , 208 | MICROCHEMICAL JOURNAL
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Abstract :

A highly efficient and sensitive non-enzymatic glucose sensor fabricated using NiO/NiPc composite nanomaterials was introduced by this study. The sensor employed a unique design by modifying the ITO electrode with the NiO/NiPc heterojunction. This enhancement was achieved by improving charge separation and transfer through the type-II heterojunction formed between NiO and NiPc. The integration of NiO/NiPc composite materials also improved the electrocatalytic activity. This enhancement was attributed to the increased concentration of oxygen vacancies, thereby boosting the overall performance of the sensor. The results of the sensor application demonstrated that under the optimized conditions (pH 4.0, -0.3 V bias), the sensor exhibited remarkable sensitivity and selectivity towards glucose, with a linear relationship between the photocurrent change and glucose concentration. The detection limit was as low as 0.016 nM, and the sensitivity was 4.146 mu A & sdot;mM- 1 & sdot;cm- 2. The sensor demonstrated excellent repeatability, stability, and high recovery rate in real sweat sample testing, highlighting its great potential for practical glucose detection applications.

Keyword :

Glucose Glucose NiO NiO NiPc NiPc Photoelectrochemical sensor Photoelectrochemical sensor

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GB/T 7714 Xue, Xiaoyan , Wu, Wenru , Yang, Yating et al. Oxygen vacancy-enriched NiO/NiPc heterojunction for highly efficient and sensitive non-enzymatic glucose sensing [J]. | MICROCHEMICAL JOURNAL , 2025 , 208 .
MLA Xue, Xiaoyan et al. "Oxygen vacancy-enriched NiO/NiPc heterojunction for highly efficient and sensitive non-enzymatic glucose sensing" . | MICROCHEMICAL JOURNAL 208 (2025) .
APA Xue, Xiaoyan , Wu, Wenru , Yang, Yating , Lin, Yue , Luo, Fang , Lin, Cuiying et al. Oxygen vacancy-enriched NiO/NiPc heterojunction for highly efficient and sensitive non-enzymatic glucose sensing . | MICROCHEMICAL JOURNAL , 2025 , 208 .
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Oxygen vacancy-enriched NiO/NiPc heterojunction for highly efficient and sensitive non-enzymatic glucose sensing Scopus
期刊论文 | 2025 , 208 | Microchemical Journal
Colorimetric sensor for hyaluronidase activity detection based on target-responsive hydrogel embedded with magnetic nanozyme Scopus
期刊论文 | 2025 , 216 | Microchemical Journal
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Abstract :

Detecting of hyaluronidase (HAase) activity is vital in oncology as it drives tumor invasion and metastasis by degrading hyaluronic acid (HA) in the extracellular matrix. In this study, combining a target-responsive hydrogel with magnetic nanozymes, a novel colorimetric sensor was designed for HAase quantification. The composite of Fe₃O₄ and MoS₂ (Fe3O4@MoS2) has magnetism activity and strong peroxidase-like activity, simultaneously has embedded in a hydrogel matrix format from HA, the presence of HAase can specific hydrolysis HA, and caused the rupture of the hydrogel and results in the releasing of the Fe3O4@MoS2. The released Fe3O4@MoS2 can be collected through magnetic separation easily and then applied to catalyze the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) by H2O2, producing a distinct color change, which can be detected by naked eyes easily. The absorbance of the system had a good linear response with HAase concentration within the range of 2.5–90 U/mL, with a limit of detection (LOD) of 1.4 U/mL (S/N = 3). The proposed sensor was successfully applied to detect HAase in serum samples from healthy individuals and pancreatic cancer patients, yielding satisfactory results. © 2025 Elsevier B.V.

Keyword :

Colorimetric sensor Colorimetric sensor Fe3O4@MoS2 Fe3O4@MoS2 Hyaluronidase Hyaluronidase Target responsive system Target responsive system

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GB/T 7714 Yang, J. , Deng, Y. , Chen, Z. et al. Colorimetric sensor for hyaluronidase activity detection based on target-responsive hydrogel embedded with magnetic nanozyme [J]. | Microchemical Journal , 2025 , 216 .
MLA Yang, J. et al. "Colorimetric sensor for hyaluronidase activity detection based on target-responsive hydrogel embedded with magnetic nanozyme" . | Microchemical Journal 216 (2025) .
APA Yang, J. , Deng, Y. , Chen, Z. , Lin, Y. , Chen, D. , Lin, C. et al. Colorimetric sensor for hyaluronidase activity detection based on target-responsive hydrogel embedded with magnetic nanozyme . | Microchemical Journal , 2025 , 216 .
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Dual-signal point-of-care testing method for T-2 toxin utilizing target-responsive DNA hydrogel and starch iodide paper SCIE
期刊论文 | 2025 , 210 | MICROCHEMICAL JOURNAL
WoS CC Cited Count: 1
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Abstract :

The persistence of T-2 toxin in food and feed matrices renders it a pervasive contaminant, impacting both human and animal health. Traditional detection methods suffer from cumbersome instrumentation and intricate procedures, rendering on-site detection of T-2 toxin unfeasible. Therefore, we have constructed a real-time detection method for T-2 toxin detection by employing a target-responsive DNA hydrogel in conjunction with potassium iodide starch test paper. This method integrates both colorimetric and distance-based signal outputs, offering a streamlined and effective approach for the on-site detection of T-2 toxin. The specific binding of the target to the aptamer in the DNA hydrogel results in the collapse of the hydrogels structure, which changes the viscosity of the system and released horseradish peroxidase in the hydrogel wrapped, and then produces blue-purple marks of different lengths on the starch iodide papers to achieve the specific detection of T-2 toxin. Under optimized conditions, the assay exhibits a detection range spanning from 10 ng/mL to 10 mg/mL for the toxin, with a detection limit of 12.83 ng/mL. The proposed method has been successfully applied for the detection of real corn samples with satisfied result. Such colorimetric-distance dual signal detection method offers notable advantages, including straightforward operation, clear signal interpretation, and practical utility. Its implementation enables rapid, on-the-spot detection of T-2 toxin, particularly beneficial in resource-limited regions and less developed countries.

Keyword :

Point-of-care testing Point-of-care testing Starch iodide paper Starch iodide paper T-2 toxin T-2 toxin Target-responsive DNA hydrogel Target-responsive DNA hydrogel

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GB/T 7714 Deng, Ye , Lin, Jiarong , Wang, Jingxuan et al. Dual-signal point-of-care testing method for T-2 toxin utilizing target-responsive DNA hydrogel and starch iodide paper [J]. | MICROCHEMICAL JOURNAL , 2025 , 210 .
MLA Deng, Ye et al. "Dual-signal point-of-care testing method for T-2 toxin utilizing target-responsive DNA hydrogel and starch iodide paper" . | MICROCHEMICAL JOURNAL 210 (2025) .
APA Deng, Ye , Lin, Jiarong , Wang, Jingxuan , Lin, Yue , Luo, Fang , Weng, Zuquan et al. Dual-signal point-of-care testing method for T-2 toxin utilizing target-responsive DNA hydrogel and starch iodide paper . | MICROCHEMICAL JOURNAL , 2025 , 210 .
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Dual-signal point-of-care testing method for T-2 toxin utilizing target-responsive DNA hydrogel and starch iodide paper Scopus
期刊论文 | 2025 , 210 | Microchemical Journal
Sensitive trypsin sensor based on the regulation of microscale ionic current rectification by the selectivity hydrolysis of hydrogel filled in microchannel SCIE
期刊论文 | 2025 , 285 | TALANTA
Abstract&Keyword Cite Version(2)

Abstract :

Filling the microchannel with negatively charged hydrogel can exhibit microsacle ion current rectification (ICR) behavior, which is attributed to the space negative charge and structural asymmetry of hydrogel. In this study, this character had been applied to develop a trypsin sensor for the first time. A hydrogel synthesized with bovine serum albumin (BSA) and glyoxal (BSAG hydrogel) was filled at the tip of microchannel firstly. Subsequently, the BSAG hydrogel-filled microchannel was immersed in a trypsin solution to hydrolyze the BSA within the BSAG hydrogel. This process changes the space charge density and pore size of the BSAG hydrogel-filled microchannel, leading to a change in microscale ICR, which can be used for quantifying trypsin. Then the key parameters affecting the sensing performance such as the concentration of BSA, strength of the electrolyte, pH and reaction time were optimized. The detection range was from 10.0 ng/mL to 100 mu g/mL with a detection limit as low as 2.55 ng/mL (S/N = 3). Due to the distinctive three-dimensional pore structure of the hydrogel and the specificity of trypsin for BSA hydrolysis, the sensor exhibits high sensitivity and specificity, as well as remarkable reproducibility and stability. This sensor has been effectively used to measure trypsin levels in human serum samples.

Keyword :

Hydrogel Hydrogel Microchannel Microchannel Microscale ionic current rectification Microscale ionic current rectification Space negtive charge Space negtive charge Trypsin Trypsin

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GB/T 7714 Cai, Huabin , Yuan, Runhao , Huang, Shaokun et al. Sensitive trypsin sensor based on the regulation of microscale ionic current rectification by the selectivity hydrolysis of hydrogel filled in microchannel [J]. | TALANTA , 2025 , 285 .
MLA Cai, Huabin et al. "Sensitive trypsin sensor based on the regulation of microscale ionic current rectification by the selectivity hydrolysis of hydrogel filled in microchannel" . | TALANTA 285 (2025) .
APA Cai, Huabin , Yuan, Runhao , Huang, Shaokun , Huang, Yanling , Lin, Cuiying , Lin, Yue et al. Sensitive trypsin sensor based on the regulation of microscale ionic current rectification by the selectivity hydrolysis of hydrogel filled in microchannel . | TALANTA , 2025 , 285 .
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Sensitive trypsin sensor based on the regulation of microscale ionic current rectification by the selectivity hydrolysis of hydrogel filled in microchannel EI
期刊论文 | 2025 , 285 | Talanta
Sensitive trypsin sensor based on the regulation of microscale ionic current rectification by the selectivity hydrolysis of hydrogel filled in microchannel Scopus
期刊论文 | 2025 , 285 | Talanta
Ultrasensitive Homogeneous Electrochemiluminescence Biosensor for N-Nitrosodimethylamine Detection Based on Vertically-Ordered Mesoporous Silica Film-Modified Electrode and CRISPR/Cas12a-Driven HRCA with Triple Signal Amplification SCIE
期刊论文 | 2025 , 97 (10) , 5828-5835 | ANALYTICAL CHEMISTRY
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Abstract :

Herein, we present an innovative electrochemiluminescence (ECL) biosensor for the ultrasensitive detection of N-nitrosodimethylamine (NDMA). The biosensor utilizes a triple signal amplification strategy, combining rolling circle amplification (RCA), CRISPR/Cas12a-driven hyperbranched rolling circle amplification (HRCA), and electrostatic repulsion with size exclusion effects from vertically ordered mesoporous silica film (VMSF)/indium tin oxide (ITO) on double-stranded DNA (dsDNA)-Ru(phen)3 2+ complexes. In this system, aptamers and circular DNA undergo RCA reactions, followed by the CRISPR/Cas12a-mediated HRCA process, producing abundant dsDNA. The electropositive ECL indicator, namely Ru(phen)3 2+, was subsequently adsorbed onto the electronegative dsDNA, forming dsDNA-Ru(phen)3 2+ complexes. These complexes are subjected to electrostatic repulsion and size exclusion by the VMSF-modified ITO electrode, resulting in a lower ECL intensity. Upon introducing NDMA, the aptamer preferentially binds to NDMA, thereby preventing the formation of long dsDNA. This process releases free Ru(phen)3 2+, which diffuses to the electrode surface through narrow mesoporous channels via electrostatic adsorption. Consequently, an enhanced and strong ECL signal is observed. The integration of VMSF enhances selectivity and sensitivity by excluding larger impurities and promoting the electrostatic repulsion of dsDNA-Ru(phen)3 2+ complexes near the electrode surface. Additionally, the CRISPR/Cas12a system eliminates the formation of primer dimers and reduces false positives through its unique cis- and trans-cleavage activities. The biosensor demonstrated excellent performance with a linear correlation between the ECL signal and NDMA concentration in the range spanning from 10 pg/mL to 10 mu g/mL, achieving a low limit of detection of 5.33 pg/mL. This platform offers a reliable and robust solution for detecting NDMA in complex matrices, making it a promising tool for environmental monitoring, public health, and safety applications.

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GB/T 7714 Zheng, Zhenjie , Qian, Zhuozhen , Huang, Da et al. Ultrasensitive Homogeneous Electrochemiluminescence Biosensor for N-Nitrosodimethylamine Detection Based on Vertically-Ordered Mesoporous Silica Film-Modified Electrode and CRISPR/Cas12a-Driven HRCA with Triple Signal Amplification [J]. | ANALYTICAL CHEMISTRY , 2025 , 97 (10) : 5828-5835 .
MLA Zheng, Zhenjie et al. "Ultrasensitive Homogeneous Electrochemiluminescence Biosensor for N-Nitrosodimethylamine Detection Based on Vertically-Ordered Mesoporous Silica Film-Modified Electrode and CRISPR/Cas12a-Driven HRCA with Triple Signal Amplification" . | ANALYTICAL CHEMISTRY 97 . 10 (2025) : 5828-5835 .
APA Zheng, Zhenjie , Qian, Zhuozhen , Huang, Da , Weng, Zuquan , Wang, Jian , Lin, Cuiying et al. Ultrasensitive Homogeneous Electrochemiluminescence Biosensor for N-Nitrosodimethylamine Detection Based on Vertically-Ordered Mesoporous Silica Film-Modified Electrode and CRISPR/Cas12a-Driven HRCA with Triple Signal Amplification . | ANALYTICAL CHEMISTRY , 2025 , 97 (10) , 5828-5835 .
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Ultrasensitive Homogeneous Electrochemiluminescence Biosensor for N-Nitrosodimethylamine Detection Based on Vertically-Ordered Mesoporous Silica Film-Modified Electrode and CRISPR/Cas12a-Driven HRCA with Triple Signal Amplification Scopus
期刊论文 | 2025 , 97 (10) , 5828-5835 | Analytical Chemistry
Ultrasensitive Homogeneous Electrochemiluminescence Biosensor for N-Nitrosodimethylamine Detection Based on Vertically-Ordered Mesoporous Silica Film-Modified Electrode and CRISPR/Cas12a-Driven HRCA with Triple Signal Amplification Scopus
期刊论文 | 2025 | Analytical Chemistry
Ultrasensitive Homogeneous Electrochemiluminescence Biosensor for N-Nitrosodimethylamine Detection Based on Vertically-Ordered Mesoporous Silica Film-Modified Electrode and CRISPR/Cas12a-Driven HRCA with Triple Signal Amplification EI
期刊论文 | 2025 , 97 (10) , 5828-5835 | Analytical Chemistry
Electrochemiluminescence sensor for organophosphorus pesticides based on the regulation of resonance energy transfer between negative charged gold nanorods and Ru(bpy)32+ SCIE
期刊论文 | 2025 , 281 | TALANTA
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Abstract :

Combined the electrostatic interaction of the negatively charged gold nanorods (AuNRs) (as acceptor) and Ru(bpy)(3)(2+) (as donor), an electrochemiluminescence resonance energy transfer (ECL-RET) sensor was constructed and applied for the detection of organophosphorus pesticides (OPs). Negatively charged AuNRs were synthesized by modifying AuNRs with polystyrene sulfonate (PSS) firstly, which can bind to Ru(bpy)(3)(2+) through electrostatic interaction so that the luminophore was absorbed by the acceptor, the resonance energy transfer occurred and only low ECL signal had been detected. Thiocholine can be produced by the hydrolysis process of acetylthiocholine (ATCh) with the help of acetylcholinesterase (AChE), which can bond with PSS-modified AuNRs (PSS-AuNRs) through gold-sulfur interaction, this caused the releasing of the adsorbed Ru(bpy)(3)(2+) into the solution and resulting in the restoration of the ECL intensity. However, the activity of AChE was inhibited by OPs, and the recovery process of the ECL signal was thus suppressed as well. In this study, chlorpyrifos was chosen as model target, the results indicated that the correlation between the ECL intensity and the logarithm of chlorpyrifos concentration showed remarkable linearity across 1 ng/mL to 1 mg/mL, achieving a detection limit of 0.51 ng/mL. The proposed system has been utilized for detecting OPs in real samples with satisfied results.

Keyword :

Acetylcholinesterase Acetylcholinesterase Electrochemiluminescence Electrochemiluminescence Gold nanorods Gold nanorods Organophosphorus pesticides Organophosphorus pesticides Resonance energy transfer Resonance energy transfer

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GB/T 7714 Li, Zixin , Lin, Zeyu , Chen, Lifen et al. Electrochemiluminescence sensor for organophosphorus pesticides based on the regulation of resonance energy transfer between negative charged gold nanorods and Ru(bpy)32+ [J]. | TALANTA , 2025 , 281 .
MLA Li, Zixin et al. "Electrochemiluminescence sensor for organophosphorus pesticides based on the regulation of resonance energy transfer between negative charged gold nanorods and Ru(bpy)32+" . | TALANTA 281 (2025) .
APA Li, Zixin , Lin, Zeyu , Chen, Lifen , Lin, Yue , Luo, Fang , Lin, Cuiying et al. Electrochemiluminescence sensor for organophosphorus pesticides based on the regulation of resonance energy transfer between negative charged gold nanorods and Ru(bpy)32+ . | TALANTA , 2025 , 281 .
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Electrochemiluminescence sensor for organophosphorus pesticides based on the regulation of resonance energy transfer between negative charged gold nanorods and Ru(bpy)32+ EI
期刊论文 | 2025 , 281 | Talanta
Electrochemiluminescence sensor for organophosphorus pesticides based on the regulation of resonance energy transfer between negative charged gold nanorods and Ru(bpy)32+ Scopus
期刊论文 | 2025 , 281 | Talanta
Nickel phthalocyanine-catalyzed ammonia detection on a TiO2 photoelectrochemical sensor with ZIF-67 enrichment for environmental water analysis SCIE
期刊论文 | 2025 , 286 | WATER RESEARCH
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Abstract :

A novel photoelectrochemical sensor based on TiO2/NiPc/ZIF-67 composite was developed for ammonia (NH3) detection in water, showing exceptional sensitivity and selectivity. The sensor was fabricated by depositing TiO2, NiPc, and ZIF-67 onto an ITO electrode. Under optimized conditions, it achieved an ultra-low detection limit of 0.031 nM, surpassing previous reports. A strong linear correlation (R2 = 0.998) was observed between the relative value of the photocurrent and the logarithm of NH3 concentration over the range of 0.1 nM to 10 mu M. TiO2 ensured stable photocurrent generation, while ZIF-67, a metal-organic framework with polyhedral morphology, adjustable pore size, high surface area (758.6 m2/g BET), and microporous structure, selectively enriched NH3. In competitive adsorption experiments, NH3 exhibited a slower adsorption rate compared to gases like CO, CH4, N2, and O2, minimizing interference. NiPc, a p-type semiconductor with an 18 pi-electron conjugated structure, coordinated with NH3 to promote NH3 oxidation and accelerate the reaction rate. The synergistic effect of NiPc and ZIF-67 enhanced the sensor performance, as demonstrated by cyclic voltammetry, which showed that the electrode potential of the oxidation process shifts negatively when both materials were modified on a glassy carbon electrode upon NH3 addition. In real water samples, the sensor displayed high selectivity, with minimal response to common interfering ions such as Cu2+, Mg2+, and Ca2+, ensuring accurate NH3 detection in complex environments.

Keyword :

Composite material Composite material NH (3) detection NH (3) detection Nickel phthalocyanine Nickel phthalocyanine Photoelectrochemical Sensor Photoelectrochemical Sensor TiO2 TiO2 Zeolite imidazolate framework-67 Zeolite imidazolate framework-67

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GB/T 7714 Wu, Wenru , Xiong, Nuoxuan , Lin, Yue et al. Nickel phthalocyanine-catalyzed ammonia detection on a TiO2 photoelectrochemical sensor with ZIF-67 enrichment for environmental water analysis [J]. | WATER RESEARCH , 2025 , 286 .
MLA Wu, Wenru et al. "Nickel phthalocyanine-catalyzed ammonia detection on a TiO2 photoelectrochemical sensor with ZIF-67 enrichment for environmental water analysis" . | WATER RESEARCH 286 (2025) .
APA Wu, Wenru , Xiong, Nuoxuan , Lin, Yue , Luo, Fang , Lin, Cuiying , Qiu, Bin et al. Nickel phthalocyanine-catalyzed ammonia detection on a TiO2 photoelectrochemical sensor with ZIF-67 enrichment for environmental water analysis . | WATER RESEARCH , 2025 , 286 .
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Nickel phthalocyanine-catalyzed ammonia detection on a TiO2 photoelectrochemical sensor with ZIF-67 enrichment for environmental water analysis Scopus
期刊论文 | 2025 , 286 | Water Research
Nickel phthalocyanine-catalyzed ammonia detection on a TiO2 photoelectrochemical sensor with ZIF-67 enrichment for environmental water analysis EI
期刊论文 | 2025 , 286 | Water Research
Advanced dual-signal point-of-care testing platform for sensitive T-2 toxin detection: Integrating copper-based conductive MOF with target-responsive DNA hydrogel SCIE
期刊论文 | 2025 , 438 | SENSORS AND ACTUATORS B-CHEMICAL
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Abstract :

In this study, we present the innovative design and comprehensive evaluation of a novel point-of-care testing (POCT) methodology for the rapid and accurate detection of T-2 toxin, a potent mycotoxin with significant implications for food safety and human health. The cornerstone of this approach lies in the integration of a copper-based conductive metal-organic framework (Cu3(HHTP)2) with a target-responsive DNA hydrogel system, creating a dual-signal readout mechanism that significantly enhances detection sensitivity and specificity. Specifically, the hydrogel covers the material's surface metal active sites, which become exposed upon target addition due to hydrogel collapse. The released Cu3(HHTP)2 can catalyze the oxidation of 3,3 ',5,5 '-tetrame-thylbenzidine, resulting in a colorimetric and temperature change in the solution. This dual-mode detection strategy enables both qualitative assessment through direct visual inspection of color change and quantitative analysis by monitoring the solution temperature variation post laser irradiation with a thermometer. Under the optimized conditions, the detection system demonstrates a wide range spanning from 5 to 200 ng/mL, with a detection limit of 1.67 ng/mL. This method has been successfully demonstrated through the analysis of real-world samples, yielding encouraging results that underscore its reliability and effectiveness. The proposed dual-signal approach boasts advantages such as straightforward operational procedures, unambiguous signal outputs, and robust practicality, making it an attractive option for mycotoxin detection in resource-constrained settings and developing regions.

Keyword :

Cu3(HHTP)2 Cu3(HHTP)2 Point-of-care testing Point-of-care testing T-2 toxin T-2 toxin Target-responsive DNA hydrogel Target-responsive DNA hydrogel

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GB/T 7714 Lin, Jiarong , Deng, Ye , Lin, Yue et al. Advanced dual-signal point-of-care testing platform for sensitive T-2 toxin detection: Integrating copper-based conductive MOF with target-responsive DNA hydrogel [J]. | SENSORS AND ACTUATORS B-CHEMICAL , 2025 , 438 .
MLA Lin, Jiarong et al. "Advanced dual-signal point-of-care testing platform for sensitive T-2 toxin detection: Integrating copper-based conductive MOF with target-responsive DNA hydrogel" . | SENSORS AND ACTUATORS B-CHEMICAL 438 (2025) .
APA Lin, Jiarong , Deng, Ye , Lin, Yue , Luo, Fang , Weng, Zuquan , Wang, Jian et al. Advanced dual-signal point-of-care testing platform for sensitive T-2 toxin detection: Integrating copper-based conductive MOF with target-responsive DNA hydrogel . | SENSORS AND ACTUATORS B-CHEMICAL , 2025 , 438 .
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Advanced dual-signal point-of-care testing platform for sensitive T-2 toxin detection: Integrating copper-based conductive MOF with target-responsive DNA hydrogel EI
期刊论文 | 2025 , 438 | Sensors and Actuators B: Chemical
Advanced dual-signal point-of-care testing platform for sensitive T-2 toxin detection: Integrating copper-based conductive MOF with target-responsive DNA hydrogel Scopus
期刊论文 | 2025 , 438 | Sensors and Actuators B: Chemical
A portable platform integrated with smartphones for rapid lactic acid analysis via ratiometric fluorescent imaging SCIE
期刊论文 | 2025 , 338 | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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Abstract :

This study presents a smartphone-integrated portable platform for rapid lactic acid (LA) analysis using ratiometric fluorescent imaging. The system employs a dual-emission probe composed of glutathione-modified gold nanoclusters (GSH-AuNCs) and carbon quantum dots (CDs), enabling visual detection via fluorescence color transitions under 365 nm UV excitation. As LA concentration increases, the fluorescence shifts from blue to orange. Smartphone photography and RGB color analysis reveal a nonlinear sigmoidal correlation between the red-to-blue intensity ratio (R/B) and LA concentration, modeled with a coefficient of determination (R2 = 0.998). The method exhibits high selectivity and achieves recovery rates of 94.5-104.8 % in sweat samples, validated against LC-MS. This technology offers a novel, on-site solution for food quality assessment and health monitoring applications.

Keyword :

Lactic acid Lactic acid Ratiometric fluorescence sensing Ratiometric fluorescence sensing Smartphone colorimetry Smartphone colorimetry

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GB/T 7714 Wu, Wen-Ru , Li, Jing , Lin, Yue et al. A portable platform integrated with smartphones for rapid lactic acid analysis via ratiometric fluorescent imaging [J]. | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY , 2025 , 338 .
MLA Wu, Wen-Ru et al. "A portable platform integrated with smartphones for rapid lactic acid analysis via ratiometric fluorescent imaging" . | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 338 (2025) .
APA Wu, Wen-Ru , Li, Jing , Lin, Yue , Luo, Fang , Lin, Cui-Ying , Qiu, Bin et al. A portable platform integrated with smartphones for rapid lactic acid analysis via ratiometric fluorescent imaging . | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY , 2025 , 338 .
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A portable platform integrated with smartphones for rapid lactic acid analysis via ratiometric fluorescent imaging EI
期刊论文 | 2025 , 338 | Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
A portable platform integrated with smartphones for rapid lactic acid analysis via ratiometric fluorescent imaging Scopus
期刊论文 | 2025 , 338 | Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Multicolor Biosensor of Hyaluronidase by the Regulation of Enzyme-Like Catalytic Activity of Au Nanoclusters through Changes in the Aggregation State SCIE
期刊论文 | 2024 , 7 (5) , 5620-5627 | ACS APPLIED NANO MATERIALS
WoS CC Cited Count: 1
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Abstract :

The control of nanoparticle morphology can effectively change their properties. Adjusting the aggregation state of bovine serum albumin-coated gold nanoclusters (BSA-Au NCs) can regulate the enzyme-mimicking catalytic activity. Hyaluronic acid (HA) induces the aggregation of BSA-Au NCs, leading to the shielding of the catalytic active sites and a decrease in activity; this feature has been utilized to design a multicolor biosensor for hyaluronidase (HAase). The presence of HAase can hydrolyze the glycosidic bonds in HA, causing the aggregated BSA-Au NCs to disperse and express their catalytic activity, which in turn catalyzes the etching of Au nanobipyramids (Au-NBPs) in the presence of 3,3 ',5,5 ' -tetramethylbenzidine (TMB), resulting in a morphological transition from bipyramidal to ellipsoidal and spherical shapes, while the solution displays a variety of colors. Visual recognition of these multicolor changes establishes a relationship between the enzyme activity and color. Based on the controlled aggregation and dispersion of BSA-Au NCs and the etching of Au-NBPs, a simple multicolor HAase biosensor was designed. The proposed biosensor shows a linear response to HAase concentrations in the range of 5-80 U/mL, with clear color changes under optimized conditions. The limit of detection (LOD) of the sensor was determined to be 1.98 U/mL (LOD = 3s/k). This method successfully applies the changing of enzyme-mimicking catalytic activity nanoparticles for colorimetric analysis detection.

Keyword :

aggregation statemodulation aggregation statemodulation Au nanocluster Au nanocluster hyaluronidase hyaluronidase multicolor multicolor nanozymes nanozymes

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GB/T 7714 Tian, Mengjian , Lin, Cuiying , Lin, Yue et al. Multicolor Biosensor of Hyaluronidase by the Regulation of Enzyme-Like Catalytic Activity of Au Nanoclusters through Changes in the Aggregation State [J]. | ACS APPLIED NANO MATERIALS , 2024 , 7 (5) : 5620-5627 .
MLA Tian, Mengjian et al. "Multicolor Biosensor of Hyaluronidase by the Regulation of Enzyme-Like Catalytic Activity of Au Nanoclusters through Changes in the Aggregation State" . | ACS APPLIED NANO MATERIALS 7 . 5 (2024) : 5620-5627 .
APA Tian, Mengjian , Lin, Cuiying , Lin, Yue , Luo, Fang , Qiu, Bin , Wang, Jian et al. Multicolor Biosensor of Hyaluronidase by the Regulation of Enzyme-Like Catalytic Activity of Au Nanoclusters through Changes in the Aggregation State . | ACS APPLIED NANO MATERIALS , 2024 , 7 (5) , 5620-5627 .
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Multicolor Biosensor of Hyaluronidase by the Regulation of Enzyme-Like Catalytic Activity of Au Nanoclusters through Changes in the Aggregation State Scopus
期刊论文 | 2024 , 7 (5) , 5620-5627 | ACS Applied Nano Materials
Multicolor Biosensor of Hyaluronidase by the Regulation of Enzyme-Like Catalytic Activity of Au Nanoclusters through Changes in the Aggregation State EI
期刊论文 | 2024 , 7 (5) , 5620-5627 | ACS Applied Nano Materials
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