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学者姓名：罗芳
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Abstract ：
Changes in the charge density on the inner surface of the microchannel can modulate the ion concentration at the tip, thus causing changes in the resistance of the system. In this study, this property is adopted to construct a portable sensor using a multimeter and aflatoxin B1 (AFB1) is used as the model target. Initially, the cDNA/aptamer complex is modified in the microchannel. The inner microchannel surface's charge density is then altered by the recognition of the target, leading to a change in the system's resistance, which can be conveniently monitored using a multimeter. Critical parameters influencing the performance of the system are optimized. Under optimum conditions, the resistance is linearly related to the logarithm of AFB1 concentration in the range of 100 fM-10 nM and the detection limit is 46 fM (S/N = 3). The resistive measurement is separated from the recognition reaction of the target, reducing the matrix interference during the detection process. This sensor boasts high sensitivity and specificity coupled with commendable reproducibility and stability. It is applied to assay the AFB1 content successfully in an actual sample of corn. Moreover, this approach is cost-effective, user-friendly, and highly accurate.
Keyword ：
aflatoxin B1 aflatoxin B1 microchannel microchannel portablesensor portablesensor resistance resistance surface charge density surface charge density
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| GB/T 7714 | Cai, Huabin , Huang, Yanling , Lin, Yue et al. Portable Sensor for Aflatoxin B1 Based on the Regulation of Resistance of a Microchannel Using a Multimeter as Readout [J]. | ACS SENSORS , 2024 , 9 (1) : 494-501 . |
| MLA | Cai, Huabin et al. "Portable Sensor for Aflatoxin B1 Based on the Regulation of Resistance of a Microchannel Using a Multimeter as Readout" . | ACS SENSORS 9 . 1 (2024) : 494-501 . |
| APA | Cai, Huabin , Huang, Yanling , Lin, Yue , Luo, Fang , Chen, Lifen , Guo, Longhua et al. Portable Sensor for Aflatoxin B1 Based on the Regulation of Resistance of a Microchannel Using a Multimeter as Readout . | ACS SENSORS , 2024 , 9 (1) , 494-501 . |
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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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Halide perovskites have emerged as a highly promising class of photoelectric materials. However, the application of lead-based perovskites has been hindered by their toxicity and relatively weak stability. In this work, a composite material comprising a lead-free perovskite cesium copper iodide (CsCu2I3) nanocrystal and a metal-organic framework (MOF-801) has been synthesized through an in situ growth approach. The resulting composite material, denoted as CsCu2I3/MOF-801, demonstrates outstanding stability and exceptional optoelectronic characteristics. MOF-801 may serve a dual role by acting as a protective barrier between CsCu2I3 nanocrystals and the external environment, as well as promoting the efficient transfer of photogenerated charge carriers, thereby mitigating their recombination. Consequently, CsCu2I3/MOF-801 demonstrates its utility by providing both stability and a notably high initial photocurrent. Leveraging the inherent reactivity between H2S and the composite material, which results in the formation of Cu2S and structural alteration, an exceptionally sensitive photoelectrochemical sensor for H2S detection has been designed. This sensor exhibits a linear detection range spanning from 0.005 to 100 mu M with a remarkable detection limit of 1.67 nM, rendering it highly suitable for precise quantification of H2S in rat brains. This eco-friendly sensor significantly broadens the application horizon of perovskite materials and lays a robust foundation for their future commercialization.
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| GB/T 7714 | Mao, Mengfan , Zu, Yexin , Zhang, Yating et al. Photoelectrochemical Sensor for H2S Based on a Lead-Free Perovskite/Metal-Organic Framework Composite [J]. | ANALYTICAL CHEMISTRY , 2024 , 96 (10) : 4290-4298 . |
| MLA | Mao, Mengfan et al. "Photoelectrochemical Sensor for H2S Based on a Lead-Free Perovskite/Metal-Organic Framework Composite" . | ANALYTICAL CHEMISTRY 96 . 10 (2024) : 4290-4298 . |
| APA | Mao, Mengfan , Zu, Yexin , Zhang, Yating , Qiu, Yongzhen , Lin, Yue , Luo, Fang et al. Photoelectrochemical Sensor for H2S Based on a Lead-Free Perovskite/Metal-Organic Framework Composite . | ANALYTICAL CHEMISTRY , 2024 , 96 (10) , 4290-4298 . |
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Curcumin (CUR) is a natural polyphenol that holds promise for treating ulcerative colitis (UC), yet oral administration of CUR exhibits limited bioavailability and existing formulations for oral delivery of CUR often suffer from unsatisfactory loading capacity. This study presents hydroxyethyl starch-curcumin microspheres (HCMSs) with excellent CUR loading capacity (54.52 %), and the HC-MSs can further encapsulate anti-inflammatory drugs dexamethasone (DEX) to obtain a combination formulation (DHC-MSs) with high DEX loading capacity (19.91 %), for combination therapy of UC. The microspheres were successfully engineered, retaining the antioxidative and anti-inflammatory activities of parental CUR and demonstrating excellent biocompatibility and controlled release properties, notably triggered by alpha-amylase, facilitating targeted drug delivery to inflamed sites. In a mouse UC model induced by dextran sulfate sodium, the microspheres effectively accumulated in inflamed colons and both HC-MSs and DHC-MSs exhibited superior therapeutic efficacy in alleviating UC symptoms compared to free DEX. Moreover, mechanistic exploration uncovered the multifaceted therapeutic mechanisms of these formulations, encompassing anti-inflammatory actions, mitigation of spleen enlargement, and modulation of gut microbiota composition. These findings underscore the potential of HC-MSs and DHC-MSs as promising formulations for UC, with implications for advancing treatment modalities for various inflammatory bowel disorders.
Keyword ：
Anti-inflammatory Anti-inflammatory Curcumin Curcumin Gut microbiota Gut microbiota Microspheres Microspheres Oral delivery Oral delivery Ulcerative colitis Ulcerative colitis
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| GB/T 7714 | Huang, Da , Wang, Yongming , Xu, Chenlan et al. Colon-targeted hydroxyethyl starch-curcumin microspheres with high loading capacity ameliorate ulcerative colitis via alleviating oxidative stress, regulating inflammation, and modulating gut microbiota [J]. | INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES , 2024 , 266 . |
| MLA | Huang, Da et al. "Colon-targeted hydroxyethyl starch-curcumin microspheres with high loading capacity ameliorate ulcerative colitis via alleviating oxidative stress, regulating inflammation, and modulating gut microbiota" . | INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES 266 (2024) . |
| APA | Huang, Da , Wang, Yongming , Xu, Chenlan , Zou, Minglang , Ming, Yangcan , Luo, Fang et al. Colon-targeted hydroxyethyl starch-curcumin microspheres with high loading capacity ameliorate ulcerative colitis via alleviating oxidative stress, regulating inflammation, and modulating gut microbiota . | INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES , 2024 , 266 . |
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| GB/T 7714 | Wang, Liang , Cheng, Ying , Meftaul, Islam Md et al. Advancing Soil Health: Challenges and Opportunities in Integrating Digital Imaging, Spectroscopy, and Machine Learning for Bioindicator Analysis [J]. | ANALYTICAL CHEMISTRY , 2024 . |
| MLA | Wang, Liang et al. "Advancing Soil Health: Challenges and Opportunities in Integrating Digital Imaging, Spectroscopy, and Machine Learning for Bioindicator Analysis" . | ANALYTICAL CHEMISTRY (2024) . |
| APA | Wang, Liang , Cheng, Ying , Meftaul, Islam Md , Luo, Fang , Kabir, Muhammad Ashad , Doyle, Richard et al. Advancing Soil Health: Challenges and Opportunities in Integrating Digital Imaging, Spectroscopy, and Machine Learning for Bioindicator Analysis . | ANALYTICAL CHEMISTRY , 2024 . |
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The electrochemiluminescence (ECL) intensity can be regulated by ionic current passing through the microchannel, which broadened the regulation of the ECL sensors. But in the early reported sensors, the electrostatic repulsion and steric hindrance caused few targets to approach the interface of the microchannel driven by concentration difference, which reduced the detection efficiency and prolonged the detection period. In this study, different accumulation strategies, such as a positive electric field and different polarity electric fields, were designed to accumulate targets in the microchannel. The interaction of azide groups and hydrogen sulfide served as a research model. Hydrogen sulfide can react with the negatively charged azide groups in the microchannel surface to produce positively charged amino groups, decreasing the negative charge density of the microchannel and thus altering the ionic current and ECL intensity. The accumulation of hydrogen sulfide at the microchannel tip can increase the collision probability with azide groups to improve the detection efficiency, and the integration of accumulation and reaction can shorten the detection period to 28 min. The hydrogen sulfide concentration on the microchannel tip accumulated by applying different polarity electric fields was 22.3-fold higher than that accumulated by applying a positive electric field. The selected research model broadened the application range of a microchannel-based ECL sensor and confirmed the universality of the microchannel-based ECL sensor.
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| GB/T 7714 | Huang, Yanling , Cai, Huabin , Lin, Yue et al. Charge Density-Regulated Microchannel-Based Electrochemiluminescence Sensor for Hydrogen Sulfide Detection with a Highly Efficient Accumulation Strategy [J]. | ANALYTICAL CHEMISTRY , 2024 , 96 (13) : 5251-5257 . |
| MLA | Huang, Yanling et al. "Charge Density-Regulated Microchannel-Based Electrochemiluminescence Sensor for Hydrogen Sulfide Detection with a Highly Efficient Accumulation Strategy" . | ANALYTICAL CHEMISTRY 96 . 13 (2024) : 5251-5257 . |
| APA | Huang, Yanling , Cai, Huabin , Lin, Yue , Luo, Fang , Lin, Cuiying , Wang, Jian et al. Charge Density-Regulated Microchannel-Based Electrochemiluminescence Sensor for Hydrogen Sulfide Detection with a Highly Efficient Accumulation Strategy . | ANALYTICAL CHEMISTRY , 2024 , 96 (13) , 5251-5257 . |
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Hydrogel dressings capable of infection monitoring and precise treatment administration show promise for advanced wound care. Existing methods involve embedd ingorganic dyes or flexible electronics into preformed hydrogels, which raise safety issues and adaptability challenges. In this study, an injectable hydrogel based smart wound dressing is developed by integrating food-derived anthocyanidin as a visual pH probe for infection monitoring and poly(L-lactic acid) microcapsules as ultrasound-responsive delivery systems for antibiotics into a poly(ethylene glycol) hydrogel. This straightforwardly prepared hydrogel dressing maintains its favorable properties for wound repair, including porous morphology and excellent biocompatibility. In vitro experiments demonstrated that the hydrogel enabled visual assessment of pH within the range of 5 similar to 9.Meanwhile, the release of antibiotics could be triggered and controlled by ultrasound. In vivo evaluations using infected wounds and diabetic wounds revealed that the wound dressing effectively detected wound infection by monitoring pH levels and achieved antibacterial effects through ultrasound-triggered drug release. This led to significantly enhanced wound healing, as validated by histological analysis and the measurement of inflammatory cytokine levels. This injectable hydrogel-based smart wound dressing holds great potential for use in clinical settings to inform timely and precise clinical intervention and in community to improve wound care management. The study presents an injectable hydrogel dressing with flexibility to fit irregularly shaped wounds and excellent biocompatibility for visual monitoring of infection and on-demand treatment. It utilizes food-derived anthocyanidin as a pH probe and poly(L-lactic acid) microcapsules for ultrasound-responsive drug delivery. In diabetic wounds, the dressing detects infections through pH monitoring and enhances healing via ultrasound-triggered drug release.image
Keyword ：
chronic wounds chronic wounds hydrogels hydrogels on-demand treatment on-demand treatment pH detection pH detection ultrasound responsive ultrasound responsive wound monitoring wound monitoring
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| GB/T 7714 | Huang, Da , Du, Jiahao , Luo, Fang et al. Injectable Hydrogels with Integrated Ph Probes and Ultrasound-Responsive Microcapsules as Smart Wound Dressings for Visual Monitoring and On-Demand Treatment of Chronic Wounds [J]. | ADVANCED HEALTHCARE MATERIALS , 2024 , 13 (9) . |
| MLA | Huang, Da et al. "Injectable Hydrogels with Integrated Ph Probes and Ultrasound-Responsive Microcapsules as Smart Wound Dressings for Visual Monitoring and On-Demand Treatment of Chronic Wounds" . | ADVANCED HEALTHCARE MATERIALS 13 . 9 (2024) . |
| APA | Huang, Da , Du, Jiahao , Luo, Fang , He, Gang , Zou, Minglang , Wang, Yongming et al. Injectable Hydrogels with Integrated Ph Probes and Ultrasound-Responsive Microcapsules as Smart Wound Dressings for Visual Monitoring and On-Demand Treatment of Chronic Wounds . | ADVANCED HEALTHCARE MATERIALS , 2024 , 13 (9) . |
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In this work, an electrochemiluminescence (ECL) biosensor for T-2 toxin detection has been designed by combining the high specificity of a DNA hydrogel system with the convenience and sensitivity of homogeneous ECL detection. Specifically, A hydrogel was engineered through the reaction between the carboxyl group of hyaluronic acid (HA) and the amino groups of both polyethyleneimine (PEI) and DNA-modified strands, resulting in a three-dimensional network that encapsulates glucose oxidase. Glucose oxidase (GOD) is capable of catalyzing the conversion of glucose into hydrogen peroxide (H₂O₂), which is a co-reactant necessary for the chemiluminescent reagent luminol to emit light. Upon the presence of the target analyte T-2 toxin, the aptamer recognizes and binds to it, leading to the dissociation and cleavage of the hydrogel framework. This process results in the leakage of the encapsulated GOD into the supernatant. Subsequently, Adding the collected supernatant to a phosphate-buffered saline (PBS) solution containing glucose and luminol for ECL testing yields a noticeable signal change. This sensor eliminates the need for electrode modification, simplifying the operation. Within a concentration range of 10 fg/mL to 100 ng/mL, the ECL signal intensity exhibits an excellent linear relationship with the logarithm of the target concentration, with a detection limit as low as 0.32 fg/mL. The method also demonstrates excellent reproducibility and stability. The sensor demonstrated precise detection capabilities in actual milk and beer samples, a crucial aspect for research focused on specific targets. © 2024
Keyword ：
DNA hydrogel DNA hydrogel Electrochemiluminescence Electrochemiluminescence Luminol Luminol T-2 toxin T-2 toxin
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| GB/T 7714 | Cai, S. , Li, D. , Luo, F. et al. An electrochemiluminescence biosensor based on target-responsive DNA hydrogel for T-2 toxin [J]. | Microchemical Journal , 2024 , 205 . |
| MLA | Cai, S. et al. "An electrochemiluminescence biosensor based on target-responsive DNA hydrogel for T-2 toxin" . | Microchemical Journal 205 (2024) . |
| APA | Cai, S. , Li, D. , Luo, F. , Lin, Z. , Huang, A. , Qiu, B. . An electrochemiluminescence biosensor based on target-responsive DNA hydrogel for T-2 toxin . | Microchemical Journal , 2024 , 205 . |
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Three-dimensional (3D) ZnO nanostructures were used as the support for gold nanoparticles (AuNPs) and graphite carbon nitride (g-C3N4) to form a Z-scheme heterostructure photoelectrode (3D ZnO/Au/g-C3N4) in this work. The 3D structure of the ZnO nanorods provided a directional channel for fast carrier transport and abundant reaction sites. ZnO and g-C3N4 formed the Z-scheme heterojunction, and the AuNPs sandwiched between ZnO and g-C3N4 acted as the mediators and greatly reinforced vector electron transfer in the Z-scheme heterojunction. Then, the 3D ZnO/Au/g-C3N4 photoelectrode was applied to develop a sensitive photoelectrochemical (PEC) biosensor for reduced glutathione (GSH) detection. GSH can act as a hole scavenger and reduce the recombination of photogenerated electron-hole pairs, which results in an increase in the photocurrent of the system. The enhanced current showed good linearity with GSH concentration in the range of 7-2000 mu M, and the system had a limit of detection of 2.3 mu M. The proposed biosensor exhibited good selectivity and reproducibility, obtaining satisfactory results in the analysis of the target in human serum.
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| GB/T 7714 | Li, Weixin , Wang, Xinyang , Huang, Jiaji et al. Preparation of Z-scheme 3D ZnO/Au/g-C3N4 heterostructures for the photoelectrochemical sensing of glutathione [J]. | SENSORS & DIAGNOSTICS , 2023 , 2 (3) : 699-706 . |
| MLA | Li, Weixin et al. "Preparation of Z-scheme 3D ZnO/Au/g-C3N4 heterostructures for the photoelectrochemical sensing of glutathione" . | SENSORS & DIAGNOSTICS 2 . 3 (2023) : 699-706 . |
| APA | Li, Weixin , Wang, Xinyang , Huang, Jiaji , Zhao, Min , Yang, Jiao , Luo, Fang et al. Preparation of Z-scheme 3D ZnO/Au/g-C3N4 heterostructures for the photoelectrochemical sensing of glutathione . | SENSORS & DIAGNOSTICS , 2023 , 2 (3) , 699-706 . |
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The entry of Hg2+ into the human body can lead to serious damage to some organs and it is vital to construct some simple but sensitive Hg2+ assay methods. A multicolor sensor for Hg2+ was constructed depended on the inhibition of peroxidase activity of Fe/Co-MIL-88(NH2) mediated by DNA and color change caused by the etching of gold nanobipyramids (Au NBPs). The enzymatic activity of Fe/Co-MIL-88(NH2) can be inhibited by adsorbing the T-rich oligonucleotide sequence on its surface. Hg2+ can combine with thymine of the T-rich oligonucleotide sequence to constitute T-Hg2+-T complex, and cause the transforming of T-rich oligonucleotide sequence into three-dimensional structure and desorbed from Fe/Co-MIL-88(NH2) surface. Which results in the restoration of the peroxidase activity of Fe/Co-MIL-88(NH2), and then it catalyzes the 3,3 & PRIME;,5,5 & PRIME;-tetramethylbenzidine (TMB) to engender TMB2+, TMB2+ can etch Au NBPs, this accompanied with a peak shift of the UV-vis spectrum and recognizable color changes of the system. Semi-quantitative can be realized using the multicolor changes of the Au NBPs as the reading mode. Furthermore, quantitative sensing can be achieved by measuring the UV-vis peak shift of the system. The linear response range is 1.0 nM-10 & mu;M, and the detection limit (LOD) is 0.28 nM.
Keyword ：
Fe/Co-MIL-88(NH 2 ) Fe/Co-MIL-88(NH 2 ) Gold nanobipyramids Gold nanobipyramids Multicolor Multicolor Nanozyme Nanozyme
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| GB/T 7714 | Luo, Qin , Chen, Yu , Chen, Lifen et al. Multicolor Hg2+sensor based on the regulation of peroxidase activity of Fe/ Co-MIL-88(NH2) and etching of gold nanobipyramids [J]. | MICROCHEMICAL JOURNAL , 2023 , 193 . |
| MLA | Luo, Qin et al. "Multicolor Hg2+sensor based on the regulation of peroxidase activity of Fe/ Co-MIL-88(NH2) and etching of gold nanobipyramids" . | MICROCHEMICAL JOURNAL 193 (2023) . |
| APA | Luo, Qin , Chen, Yu , Chen, Lifen , Chen, Zhonghui , Luo, Fang , Wang, Jian et al. Multicolor Hg2+sensor based on the regulation of peroxidase activity of Fe/ Co-MIL-88(NH2) and etching of gold nanobipyramids . | MICROCHEMICAL JOURNAL , 2023 , 193 . |
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