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学者姓名：魏巧华
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Abstract ：
Photocurrent-polarity conversion strategies are typically realized by constructing complex photovoltaic electrodes or changing the relevant conditions, but most involve poor photogenerated carrier transfer efficiency and cumbersome experimental steps. To this end, a photoelectrochemical (PEC) biosensor by utilizing ascorbic acid (AA)-induced photocurrent-polarity-switching was proposed for the detection of carcinoembryonic antigen (CEA). Under light excitation, the electron donor AA was oxidized by the photogenerated holes of photoactive material Co-NC/CdS, resulting in the conversion of cathodic photocurrent to the anodic direction. In the presence of the target CEA, alkaline phosphatase (ALP) was introduced into the microplates by the sandwiched immunoreaction, which then catalyzed the production of AA from ascorbic acid-2-phosphate (AAP). Finally, the catalytic product AA was transferred onto Co-NC/CdS-modified screen-printed carbon electrode, thus activating photocurrent-polarity-switching platform. The anodic photocurrent values gradually increased with increasing CEA concentration in the range of 0.02-80 ng mL(-1) and reached a limit of detection (LOD) of 8.47 pg mL(-1) (S/N = 3). In addition, the results of actual sample detection prove the reliability of the constructed PEC biosensor. Importantly, this work relies on a mobile smartphone wireless Bluetooth device coupled with the PEC biosensor for immediate detection, providing another idea for detecting CEA in clinical diagnosis.
Keyword ：
Carcinoembryonic antigen Carcinoembryonic antigen Photocurrent-polarity-switching Photocurrent-polarity-switching Photoelectrochemical immunoassay Photoelectrochemical immunoassay Point-of-care Point-of-care Wireless bluetooth Wireless bluetooth
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| GB/T 7714 | Wang, Xin , Wang, Haiyang , Wan, Xinyu et al. Smartphone-based point-of-care photoelectrochemical immunoassay coupling with ascorbic acid-triggered photocurrent-polarity conversion switching [J]. | BIOSENSORS & BIOELECTRONICS , 2025 , 267 . |
| MLA | Wang, Xin et al. "Smartphone-based point-of-care photoelectrochemical immunoassay coupling with ascorbic acid-triggered photocurrent-polarity conversion switching" . | BIOSENSORS & BIOELECTRONICS 267 (2025) . |
| APA | Wang, Xin , Wang, Haiyang , Wan, Xinyu , Wei, Qiaohua , Zeng, Yongyi , Tang, Dianping . Smartphone-based point-of-care photoelectrochemical immunoassay coupling with ascorbic acid-triggered photocurrent-polarity conversion switching . | BIOSENSORS & BIOELECTRONICS , 2025 , 267 . |
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The yolk-shell structure has become a research hotspot in the field of photocatalysis in recent years due to its stability, movable yolk, and internal voids. However, yolk-shell has not been fully explored and applied in photoelectrochemical (PEC) immunoassays. In this work, a smartphone-based portable PEC immunoassay was constructed by using high-entropy yolk-shell Au@(ZnCdMnGaCu)(x)S as a photosensitive material, showing satisfactory detection with the assistance of localized surface plasmon resonance (LSPR). Specifically, a typical sandwich reaction introduces a detection antibody modified and labeled with gold nanoparticles (Au NPs) of alkaline phosphatase (ALP) into the system with the presence of prostate-specific antigen (PSA). Ascorbic acid (AA) content increased with increasing PSA and showed a linear enhancement of photocurrent at PSA concentrations of 0.01-50 ng mL(-1) with a limit of detection of 8.94 pg mL(-1). Additionally, the proposed assay technology not only provides a portable detection system for the immediate detection of tumor markers, but also offers a promising paradigm for the development of high-entropy materials.
Keyword ：
High-entropy yolk-shell Au@(ZnCdMnGaCu)(x)S High-entropy yolk-shell Au@(ZnCdMnGaCu)(x)S Localized surface plasmon resonance Localized surface plasmon resonance Photoelectrochemical immunoassay Photoelectrochemical immunoassay Portable inspection system Portable inspection system Prostate-specific antigen Prostate-specific antigen Smartphone Smartphone
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| GB/T 7714 | Wan, Xinyu , Wang, Xin , Wang, Haiyang et al. Localized surface plasmon resonance-enhanced photoelectrochemical immunoassay based on high-entropy yolk-shell Au@(ZnCdMnGaCu)xS [J]. | SENSORS AND ACTUATORS B-CHEMICAL , 2025 , 422 . |
| MLA | Wan, Xinyu et al. "Localized surface plasmon resonance-enhanced photoelectrochemical immunoassay based on high-entropy yolk-shell Au@(ZnCdMnGaCu)xS" . | SENSORS AND ACTUATORS B-CHEMICAL 422 (2025) . |
| APA | Wan, Xinyu , Wang, Xin , Wang, Haiyang , Wei, Qiaohua , Tang, Dianping . Localized surface plasmon resonance-enhanced photoelectrochemical immunoassay based on high-entropy yolk-shell Au@(ZnCdMnGaCu)xS . | SENSORS AND ACTUATORS B-CHEMICAL , 2025 , 422 . |
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Accurate and rapid identification of expired and spoiled food is crucial for food conservation, reducing resource wastage, and preventing food poisoning. This paper presents a portable electrochemical sensing platform supported by a miniature electrochemical workstation and an intelligent pH recognition system, enabling detection of L-lactic acid (L-LA) in food products without enzyme involvement. The system was based on a Cu2O@CuO multifaceted extended spatial hexapod structure. The synthesized Cu2O@CuO was characterized by a welldefined multifaceted structure. Significant enzyme-free catalysis was exhibited, and pH responses dominated by anthocyanins were identified through an intelligent image acquisition system. Additionally, we developed an electrochemical detection device for pH assistance during target testing, addressing the limitations of current electrochemical sensors' complex signal acquisition components using 3D-printed fabrication techniques and smartphones. The proposed multifunctional electrochemical workbench based on Cu2O@CuO was found to offer a preferable linear detection range of 0.1-1000 mu M for L-LA, with a low detection limit of 0.027 mu M. The visualization of pH determination was introduced as a novel approach for developing advanced electrochemical workbenches. In conclusion, pH-assisted portable electrochemical detection systems hold great potential for immediate food safety identification, particularly in resource-limited areas, facilitating prompt diagnosis and ensuring food safety.
Keyword ：
3D-printed device 3D-printed device Electrochemical detection Electrochemical detection Enzyme-free catalysis Enzyme-free catalysis Food quality evaluation Food quality evaluation Visualization Visualization
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| GB/T 7714 | Wu, Di , Wei, Qiaohua , Yu, Zhichao et al. Miniature dual-channel electrochemical 3D-printed sensing platform for enzyme-free screening of L-lactic acid in foodstuffs accompanying pH recognition [J]. | FOOD CHEMISTRY , 2025 , 465 . |
| MLA | Wu, Di et al. "Miniature dual-channel electrochemical 3D-printed sensing platform for enzyme-free screening of L-lactic acid in foodstuffs accompanying pH recognition" . | FOOD CHEMISTRY 465 (2025) . |
| APA | Wu, Di , Wei, Qiaohua , Yu, Zhichao , Gao, Yuan , Knopp, Dietmar , Tang, Dianping . Miniature dual-channel electrochemical 3D-printed sensing platform for enzyme-free screening of L-lactic acid in foodstuffs accompanying pH recognition . | FOOD CHEMISTRY , 2025 , 465 . |
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Three pargyline-phosphine copper(I) clusters, [Cu-4(C equivalent to C-C9H12N)(3)(PPh3)(4)](PF6) (1) and [Cu-6(CC-C9H12N)(4)(dppy)(4)](X)(2) (dppy = diphenyl-2-pyridylphosphine; X = PF6 for 2 and X = ClO4 for 3), were synthesized. Their structures were fully characterized using various spectroscopic methods and X-ray crystallography, which showed that the stoichiometry and nature of pargyline and phosphine ligands play an important role in tuning the structure and photophysical features of Cu(i) clusters. Interestingly, clusters 1, 2 and 3 exhibited red, orange and yellow phosphorescence with high quantum yields of 88.5%, 22.0% and 40.2%, respectively, at room temperature. Moreover, clusters 1-3 show distinct temperature-dependent emissions. The excellent luminescence performance of 1 and 3 was designed and employed for the construction of monochrome and white light-emitting devices (LEDs).
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| GB/T 7714 | Huang, Qiu-Qin , Lin, Yan-Yan , Wang, Yu-Ling et al. Pargyline-phosphine copper(I) clusters with tunable emission for light-emitting devices [J]. | DALTON TRANSACTIONS , 2024 , 53 (13) : 5844-5850 . |
| MLA | Huang, Qiu-Qin et al. "Pargyline-phosphine copper(I) clusters with tunable emission for light-emitting devices" . | DALTON TRANSACTIONS 53 . 13 (2024) : 5844-5850 . |
| APA | Huang, Qiu-Qin , Lin, Yan-Yan , Wang, Yu-Ling , Qi, Jia yuan , Fu, FengFu , Wei, Qiao-Hua . Pargyline-phosphine copper(I) clusters with tunable emission for light-emitting devices . | DALTON TRANSACTIONS , 2024 , 53 (13) , 5844-5850 . |
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A series of gold (I) phoshpine complexes with diverse alkynyl ligands [Au(C equivalent to CR)(PTA)] (R=C6H11OH, 1; C5H9OH, 2; C15H11OH, 3; C19H27O2, 4; C18H23O2, 5; C9H12N, 6; CH2OCH2C6H5, 7; C6H4OCH3, 8; PTA=1,3,5-Triaza-7-phosphaadamantane) have been synthesized and characterized using a range of spectroscopic techniques. Complex 1 and 3 show an infinite one-dimensional S-type and zigzag aurophilic chain, respectively, whereas complex 2 containing 1-ethynyl-1-cyclohexanol gives an approximate linear two-dimensional aurophilic chain, through intra/intermolecular Au(I)& ctdot;Au(I) interactions as well as hydrogen bonding interactions between hydroxy groups of alkynyl ligands and PTA. Solid complexes 1-8 display strongly room/low-temperature emissive of 477-613 nm with the emission lifetime of 0.40-14.0 mu s. All the complexes display higher cytotoxicities against MCF-7, with the cytotoxicity decreasing in the following order 4>8>5>3>7>6>2>1. Complex 4 and 5 stand out for the highest selectivity towards MCF-7 (IC50=0.63-0.78 mu M) compared with normal human embryonic lung fibroblasts (helf) (IC50=14.85-18.13 mu M), which makes those complexes attractive for breast cancer therapy.
Keyword ：
alkynyl gold (I) phoshpine complexes alkynyl gold (I) phoshpine complexes cytotoxicity cytotoxicity luminescence luminescence structure-activity relationships structure-activity relationships
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| GB/T 7714 | Lin, Tingting , Lin, Yanyan , Yao, Junfei et al. Alkynyl Gold(I) Phosphine Complexes: Evaluation of Structure-Activity Relationships for the Alkynyl Ligands on Luminescence and Cytotoxicity [J]. | EUROPEAN JOURNAL OF INORGANIC CHEMISTRY , 2024 , 27 (18) . |
| MLA | Lin, Tingting et al. "Alkynyl Gold(I) Phosphine Complexes: Evaluation of Structure-Activity Relationships for the Alkynyl Ligands on Luminescence and Cytotoxicity" . | EUROPEAN JOURNAL OF INORGANIC CHEMISTRY 27 . 18 (2024) . |
| APA | Lin, Tingting , Lin, Yanyan , Yao, Junfei , Wu, Zhongwei , Fu, Nanyan , Wei, Qiaohua . Alkynyl Gold(I) Phosphine Complexes: Evaluation of Structure-Activity Relationships for the Alkynyl Ligands on Luminescence and Cytotoxicity . | EUROPEAN JOURNAL OF INORGANIC CHEMISTRY , 2024 , 27 (18) . |
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Background: Total antioxidant capacity (TAC) testing is critical for guiding dietary, and nutritional treatments, and investigating the efficacy of antioxidant food additives. Results: Here, a competitive enzyme-like colorimetric method based on Co-Mn nanoflower nanozymes was developed for the determination of TAC in food. The synthesized nanozymes had excellent POD-like activity, using the antioxidant as a special recognition unit and the chromogenic substrate as a signal molecule reporter, and could generate a significant color response in less than 15 min by producing enzymatically catalyzed ROS. Antioxidants in food were introduced into the system and inhibited the oxidative attack of reducing substances, which was signaled through signal molecules. The established TAC sensor had a sensitivity response of 1-20 mu g/ mL and a low detection limit of 0.1 mu g/mL. It was worth noting that the developed detection strategy not only meets the criterion of a reduced elapsed time for the HPLC method but also achieves high-throughput batch detection. The examination of each component can be accomplished in 10-20 s while maintaining the same precision as the commercially available HPLC approach.
Keyword ：
Antioxidant testing Antioxidant testing Colorimetric assay Colorimetric assay Co-Mn bimetallic oxide nanozyme Co-Mn bimetallic oxide nanozyme Food analysis Food analysis Food quality evaluation Food quality evaluation Peroxidase-like activity Peroxidase-like activity
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| GB/T 7714 | Chen, Shuyun , Yu, Zhichao , Wang, Yunsen et al. Pioneering food analysis: Transformative antioxidant testing with colorimetric assays using Co-Mn bimetallic oxide nanozyme [J]. | ANALYTICA CHIMICA ACTA , 2024 , 1333 . |
| MLA | Chen, Shuyun et al. "Pioneering food analysis: Transformative antioxidant testing with colorimetric assays using Co-Mn bimetallic oxide nanozyme" . | ANALYTICA CHIMICA ACTA 1333 (2024) . |
| APA | Chen, Shuyun , Yu, Zhichao , Wang, Yunsen , Tian, Shuo , Wei, Qiaohua , Tang, Dianping . Pioneering food analysis: Transformative antioxidant testing with colorimetric assays using Co-Mn bimetallic oxide nanozyme . | ANALYTICA CHIMICA ACTA , 2024 , 1333 . |
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介绍了一个研究型综合化学实验——具有异构发光变色的双核铜(I)配合物的合成、铜含量分析和发光性能研究。本实验基于氧化还原反应和配位反应合成Cu(I)配合物，采用薄层色谱法判断合成反应进程，运用配位滴定法测定其铜含量，利用荧光光度法和荧光定量分析法测定固态荧光以及判断产品的纯度。本实验综合了无机化学、有机化学、分析化学的基础知识和实验技能以及大型仪器的学习和操作，同时体现了发光金属配合物这一科研热点，探究物质结构与性质的关系。通过本实验的实践，学生在巩固所学实验知识和实验技能的同时，训练了运用所学知识解决实际问题的综合能力，有利于学生初步建立科学的思维方式和研究能力。
Keyword ：
发光性能 发光性能 综合化学实验 综合化学实验 铜(I)配合物 铜(I)配合物 铜含量分析 铜含量分析
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| GB/T 7714 | 郑琤 , 郑诗颖 , 张艳萍 et al. 具有异构发光变色的双核铜(I)配合物的合成、铜含量分析和发光性能研究——推荐一个综合化学实验 [J]. | 大学化学 , 2024 , 39 (07) : 322-329 . |
| MLA | 郑琤 et al. "具有异构发光变色的双核铜(I)配合物的合成、铜含量分析和发光性能研究——推荐一个综合化学实验" . | 大学化学 39 . 07 (2024) : 322-329 . |
| APA | 郑琤 , 郑诗颖 , 张艳萍 , 郑寿添 , 魏巧华 . 具有异构发光变色的双核铜(I)配合物的合成、铜含量分析和发光性能研究——推荐一个综合化学实验 . | 大学化学 , 2024 , 39 (07) , 322-329 . |
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介绍了一个研究型综合化学实验——具有异构发光变色的双核铜(Ⅰ)配合物的合成、铜含量分析和发光性能研究.本实验基于氧化还原反应和配位反应合成Cu(Ⅰ)配合物,采用薄层色谱法判断合成反应进程,运用配位滴定法测定其铜含量,利用荧光光度法和荧光定量分析法测定固态荧光以及判断产品的纯度.本实验综合了无机化学、有机化学、分析化学的基础知识和实验技能以及大型仪器的学习和操作,同时体现了发光金属配合物这一科研热点,探究物质结构与性质的关系.通过本实验的实践,学生在巩固所学实验知识和实验技能的同时,训练了运用所学知识解决实际问题的综合能力,有利于学生初步建立科学的思维方式和研究能力.
Keyword ：
发光性能 发光性能 综合化学实验 综合化学实验 铜含量分析 铜含量分析 铜(Ⅰ)配合物 铜(Ⅰ)配合物
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| GB/T 7714 | 郑琤 , 郑诗颖 , 张艳萍 et al. 具有异构发光变色的双核铜(Ⅰ)配合物的合成、铜含量分析和发光性能研究 [J]. | 大学化学 , 2024 , 39 (7) : 322-329 . |
| MLA | 郑琤 et al. "具有异构发光变色的双核铜(Ⅰ)配合物的合成、铜含量分析和发光性能研究" . | 大学化学 39 . 7 (2024) : 322-329 . |
| APA | 郑琤 , 郑诗颖 , 张艳萍 , 郑寿添 , 魏巧华 . 具有异构发光变色的双核铜(Ⅰ)配合物的合成、铜含量分析和发光性能研究 . | 大学化学 , 2024 , 39 (7) , 322-329 . |
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Maximization the synergistic effect of each component in transition metal-carbon complexes is expected to improve the bifunctional oxygen electrocatalysis for rechargeable Zn-air batteries but is still challenging. Herein, nucleobase guanine is employed as a supramolecular precursor to generate the core (FeCo alloy)-shell (carbon) structure embedded in ultrathin graphene-like nitrogen-doped carbon nanosheets (FeCo@NCNSs) via a confinement pyrolysis strategy. Thanks to the generated core-shell structure and bimetallic synergistic effect, the as-prepared FeCo@NCNSs exhibits excellent electrochemical performance in both oxygen reduction reaction and oxygen evolution reaction. As a result, when served as the bifunctional air electrode for a practical Zn-air battery, FeCo@NCNSs exhibits a higher open-circuit voltage (1.553 V) and peak power density (197.30 mW cm-2), as well as the greatly improved long-term cyclic stability compared to the noble metal benchmarks. This work provides a promising approach to integrate various active sites for bifunctional oxygen electrocatalysis and inspires the exploration of simple but efficient electrocatalysts for energy storage and conversion.
Keyword ：
Bifunctional oxygen electrocatalysis Bifunctional oxygen electrocatalysis Core-shell structure Core-shell structure FeCo alloy FeCo alloy Guanine Guanine Rechargeable Zn-air batteries Rechargeable Zn-air batteries
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| GB/T 7714 | Lin, Xin , Cui, Longji , Ding, Xueda et al. Guanine-derived core-shell FeCo alloy confined in graphene-like N-doped carbon as efficient bifunctional oxygen electrocatalysts for rechargeable Zn-air batteries [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2024 , 998 . |
| MLA | Lin, Xin et al. "Guanine-derived core-shell FeCo alloy confined in graphene-like N-doped carbon as efficient bifunctional oxygen electrocatalysts for rechargeable Zn-air batteries" . | JOURNAL OF ALLOYS AND COMPOUNDS 998 (2024) . |
| APA | Lin, Xin , Cui, Longji , Ding, Xueda , Chen, Yiquan , Wei, Qiaohua , Huang, Baobing et al. Guanine-derived core-shell FeCo alloy confined in graphene-like N-doped carbon as efficient bifunctional oxygen electrocatalysts for rechargeable Zn-air batteries . | JOURNAL OF ALLOYS AND COMPOUNDS , 2024 , 998 . |
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Developing novel electrocatalysts for achieving high selectivity and faradaic efficiency in the carbon dioxide reduction reaction (CO2RR) poses a major challenge. In this study, a catalyst featuring a nitrogen-doped carbon shell-coated Ni nanoparticle structure is designed for efficient carbon dioxide (CO2) electroreduction to carbon monoxide (CO). The optimal Ni@NC-1000 catalyst exhibits remarkable CO faradaic efficiency (FECO) values exceeding 90% across a broad potential range of -0.55 to -0.9 V (vs. RHE), and attains the maximum FECO of 95.6% at -0.75 V (vs. RHE) in 0.5 M NaHCO3. This catalyst exhibits sustained carbon dioxide electroreduction activity with negligible decay after continuous electrolysis for 20 h. More encouragingly, a substantial current density of 200.3 mA cm(-2) is achieved in a flow cell at -0.9 V (vs. RHE), reaching an industrial-level current density. In situ Fourier transform infrared spectroscopy and theoretical calculations demonstrate that its excellent catalytic performance is attributed to highly active pyrrolic nitrogen sites, promoting CO2 activation and significantly reducing the energy barrier for generating *COOH. To a considerable extent, this work presents an effective strategy for developing high-efficiency catalysts for electrochemical CO2 reduction across a wide potential window.
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| GB/T 7714 | Peng, Ying , Chen, Shuo , Hu, Zhengli et al. Guanine-derived carbon nanosheet encapsulated Ni nanoparticles for efficient CO2 electroreduction [J]. | DALTON TRANSACTIONS , 2024 , 53 (23) : 9724-9731 . |
| MLA | Peng, Ying et al. "Guanine-derived carbon nanosheet encapsulated Ni nanoparticles for efficient CO2 electroreduction" . | DALTON TRANSACTIONS 53 . 23 (2024) : 9724-9731 . |
| APA | Peng, Ying , Chen, Shuo , Hu, Zhengli , Yin, Mengqi , Pei, Lishun , Wei, Qiaohua et al. Guanine-derived carbon nanosheet encapsulated Ni nanoparticles for efficient CO2 electroreduction . | DALTON TRANSACTIONS , 2024 , 53 (23) , 9724-9731 . |
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