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Article ; Online: In Situ Growth of Conductive Metal-Organic Framework onto Cu

Zhang, Fangdou / Jiao, Chunpeng / Shang, Yanxue / Cao, Shoufu / Sun, Ruichang / Lu, Xiaoqing / Yan, Zifeng / Zeng, Jingbin

ACS sensors

2024 Volume 9, Issue 3, Page(s) 1310–1320

Abstract: The sensitivity of chemiresistive gas sensors based on metal oxide semiconductors (MOSs) has been inherently affected by ambient humidity because their reactive oxygen species are easily hydroxylated by water molecules, which significantly reduces the ... ...

Abstract	The sensitivity of chemiresistive gas sensors based on metal oxide semiconductors (MOSs) has been inherently affected by ambient humidity because their reactive oxygen species are easily hydroxylated by water molecules, which significantly reduces the accuracy of the gas sensors in food quality assessment. Although conventional metal organic frameworks (MOFs) can serve as coatings for MOSs for humidity-independent gas detection, they have to operate at high working temperatures due to their low or nonconductivity, resulting in high power consumption, significant manufacturing inconvenience, and short-term stability due to the oxidation of MOFs. Here, the conductive and thickness-controlled CuHHTP (HHTP = 2,3,6,7,10,11-hexahydroxytriphenylene)-coated Cu
MeSH term(s)	Humidity ; Hydrogen Sulfide ; Metal-Organic Frameworks ; Food Quality ; Oxides ; Water
Chemical Substances	Hydrogen Sulfide (YY9FVM7NSN) ; Metal-Organic Frameworks ; Oxides ; Water (059QF0KO0R)
Language	English
Publishing date	2024-02-23
Publishing country	United States
Document type	Journal Article
ISSN	2379-3694
ISSN (online)	2379-3694
DOI	10.1021/acssensors.3c02200
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Article ; Online: PEI-Mediated Assembly of Fe

Shang, Yanxue / Wang, Jinling / Xia, Hongkun / Jiao, Chunpeng / Wu, Yanfang / Jiang, Yongzhong / Wu, Xian / Wen, Congying / Zeng, Jingbin

Analytical chemistry

2024 Volume 96, Issue 15, Page(s) 6065–6071

Abstract: The conventional lateral flow immunoassay (LFIA) method using colloidal gold nanoparticles (Au NPs) as labeling agents faces two inherent limitations, including restricted sensitivity and poor quantitative capability, which impede early viral infection ... ...

Abstract	The conventional lateral flow immunoassay (LFIA) method using colloidal gold nanoparticles (Au NPs) as labeling agents faces two inherent limitations, including restricted sensitivity and poor quantitative capability, which impede early viral infection detection. Herein, we designed and synthesized CsPbBr
MeSH term(s)	Silicon Dioxide ; Metal Nanoparticles ; Gold ; Fluorescent Dyes ; Immunoassay/methods ; Gold Colloid
Chemical Substances	Silicon Dioxide (7631-86-9) ; Gold (7440-57-5) ; Fluorescent Dyes ; Gold Colloid
Language	English
Publishing date	2024-04-03
Publishing country	United States
Document type	Journal Article
ZDB-ID	1508-8
ISSN	1520-6882 ; 0003-2700
ISSN (online)	1520-6882
ISSN	0003-2700
DOI	10.1021/acs.analchem.4c00648
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Article ; Online: A highly sensitive point-of-care detection platform for Salmonella typhimurium by integrating magnetic enrichment and fluorescent CsPbBr

Shang, Yanxue / Wang, Jinling / Xia, Hongkun / Jiao, Chunpeng / Javaid, Nafisa / Liu, Xiangyi / Li, Jingwen / Zeng, Jingbin

Mikrochimica acta

2024 Volume 191, Issue 6, Page(s) 303

Abstract: A platform was designed based on ... ...

Abstract	A platform was designed based on Fe
MeSH term(s)	Salmonella typhimurium/isolation & purification ; Silicon Dioxide/chemistry ; Limit of Detection ; Fluorescent Dyes/chemistry ; Spectrometry, Fluorescence/methods ; Lead/chemistry ; Point-of-Care Systems ; Sulfides/chemistry ; Magnetite Nanoparticles/chemistry ; Humans
Chemical Substances	Silicon Dioxide (7631-86-9) ; Fluorescent Dyes ; Lead (2P299V784P) ; Sulfides ; Magnetite Nanoparticles
Language	English
Publishing date	2024-05-06
Publishing country	Austria
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	89-9
ISSN	1436-5073 ; 0026-3672
ISSN (online)	1436-5073
ISSN	0026-3672
DOI	10.1007/s00604-024-06361-w
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Article ; Online: Multifunctional Nanoprobe-Amplified Enzyme-Linked Immunosorbent Assay on Capillary: A Universal Platform for Simple, Rapid, and Ultrasensitive Dual-Mode Pathogen Detection

Jiao, Chunpeng / Duan, Wei / Wu, Xian / Shang, Yanxue / Zhang, Fangdou / Zhang, Maosheng / Chen, Xi / Zeng, Jingbin / Yang, Chaoyong

Analytical Chemistry. 2023 July 04, v. 95, no. 30 p.11316-11325

2023

Abstract: Although the traditional enzyme-linked immunosorbent assay (ELISA) has been widely applied in pathogen detection and clinical diagnostics, it always suffers from complex procedures, a long incubation time, unsatisfying sensitivity, and a single signal ... ...

Abstract	Although the traditional enzyme-linked immunosorbent assay (ELISA) has been widely applied in pathogen detection and clinical diagnostics, it always suffers from complex procedures, a long incubation time, unsatisfying sensitivity, and a single signal readout. Here, we developed a simple, rapid, and ultrasensitive platform for dual-mode pathogen detection based on a multifunctional nanoprobe integrated with a capillary ELISA (CLISA) platform. The novel capture antibodies-modified capillaries can act as a swab to combine in situ trace sampling and detection procedures, eliminating the dissociation between sampling and detection in traditional ELISA assays. With excellent photothermal and peroxidase-like activity, the Fe₃O₄@MoS₂ nanoprobe with a unique p–n heterojunction was chosen as an enzyme substitute and amplified signal tag to label the detection antibody for further sandwich immune sensing. As the analyte concentration increased, the Fe₃O₄@MoS₂ probe could generate dual-mode signals, including remarkable color changes from the chromogenic substrate oxidation as well as photothermal enhancement. Moreover, to avoid false negative results, the excellent magnetic capability of the Fe₃O₄@MoS₂ probe can be used to pre-enrich the trace analytes, amplifying the detection signal and enhancing the immunoassay’s sensitivity. Under optimal conditions, specific and rapid detection of SARS-CoV-2 has been realized successfully based on this integrated nanoprobe-enhanced CLISA platform. The detection limits were 5.41 pg·mL–¹ for the photothermal assay and 150 pg·mL–¹ for the visual colorimetric assay. More importantly, the simple, affordable, and portable platform can also be expanded to rapidly detect other targets such as Staphylococcus aureus and Salmonella typhimurium in practical samples, making it a universal and attractive tool for multiple pathogen analysis and clinical testing in the post COVID-19 era.
Keywords	COVID-19 infection ; Salmonella Typhimurium ; Severe acute respiratory syndrome coronavirus 2 ; Staphylococcus aureus ; analytical chemistry ; antibodies ; chemical species ; color ; colorimetry ; diagnostic techniques ; dissociation ; enzyme-linked immunosorbent assay ; enzymes ; magnetism ; microbial detection ; oxidation ; pathogens ; rapid methods
Language	English
Dates of publication	2023-0704
Size	p. 11316-11325.
Publishing place	American Chemical Society
Document type	Article ; Online
ZDB-ID	1508-8
ISSN	1520-6882 ; 0003-2700
ISSN (online)	1520-6882
ISSN	0003-2700
DOI	10.1021/acs.analchem.3c01375
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Article ; Online: Multifunctional Nanoprobe-Amplified Enzyme-Linked Immunosorbent Assay on Capillary: A Universal Platform for Simple, Rapid, and Ultrasensitive Dual-Mode Pathogen Detection.

Jiao, Chunpeng / Duan, Wei / Wu, Xian / Shang, Yanxue / Zhang, Fangdou / Zhang, Maosheng / Chen, Xi / Zeng, Jingbin / Yang, Chaoyong

Analytical chemistry

2023 Volume 95, Issue 30, Page(s) 11316–11325

Abstract	Although the traditional enzyme-linked immunosorbent assay (ELISA) has been widely applied in pathogen detection and clinical diagnostics, it always suffers from complex procedures, a long incubation time, unsatisfying sensitivity, and a single signal readout. Here, we developed a simple, rapid, and ultrasensitive platform for dual-mode pathogen detection based on a multifunctional nanoprobe integrated with a capillary ELISA (CLISA) platform. The novel capture antibodies-modified capillaries can act as a swab to combine in situ trace sampling and detection procedures, eliminating the dissociation between sampling and detection in traditional ELISA assays. With excellent photothermal and peroxidase-like activity, the Fe
MeSH term(s)	Humans ; Capillaries ; Molybdenum ; COVID-19/diagnosis ; SARS-CoV-2 ; Enzyme-Linked Immunosorbent Assay/methods ; Antibodies
Chemical Substances	Molybdenum (81AH48963U) ; Antibodies
Language	English
Publishing date	2023-07-04
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1508-8
ISSN	1520-6882 ; 0003-2700
ISSN (online)	1520-6882
ISSN	0003-2700
DOI	10.1021/acs.analchem.3c01375
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Article ; Online: Ag Nanoparticles with Ultrathin Au Shell-Based Lateral Flow Immunoassay for Colorimetric and SERS Dual-Mode Detection of SARS-CoV-2 IgG.

Liang, Penghui / Guo, Qi / Zhao, Tianyu / Wen, Cong-Ying / Tian, Zhangyu / Shang, Yanxue / Xing, Jinyan / Jiang, Yongzhong / Zeng, Jingbin

Analytical chemistry

2022 Volume 94, Issue 23, Page(s) 8466–8473

Abstract: Immunoglobulin detection is essential for diagnosing progression of SARS-CoV-2 infection, for which SARS-CoV-2 IgG is one of the most important indexes. In this paper, Ag nanoparticles with ultrathin Au shells (∼2 nm) embedded with 4-mercaptobenzoic acid ...

Abstract	Immunoglobulin detection is essential for diagnosing progression of SARS-CoV-2 infection, for which SARS-CoV-2 IgG is one of the most important indexes. In this paper, Ag nanoparticles with ultrathin Au shells (∼2 nm) embedded with 4-mercaptobenzoic acid (MBA) (Ag
MeSH term(s)	Antibodies, Viral ; COVID-19/diagnosis ; Colorimetry ; Humans ; Immunoassay/methods ; Immunoglobulin G ; Metal Nanoparticles ; Reproducibility of Results ; SARS-CoV-2 ; Silver ; Spectrum Analysis, Raman/methods ; Spike Glycoprotein, Coronavirus
Chemical Substances	Antibodies, Viral ; Immunoglobulin G ; Spike Glycoprotein, Coronavirus ; spike protein, SARS-CoV-2 ; Silver (3M4G523W1G)
Language	English
Publishing date	2022-06-03
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1508-8
ISSN	1520-6882 ; 0003-2700
ISSN (online)	1520-6882
ISSN	0003-2700
DOI	10.1021/acs.analchem.2c01286
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Article ; Online: Cu

Zhang, Fangdou / Shang, Yanxue / Yu, Ruyue / Wang, Ying / Feng, Fan / Guo, Qi / Xing, Jinyan / Tian, Zhangyu / Zeng, Jingbin / Yan, Zifeng

Journal of hazardous materials

2022 Volume 436, Page(s) 129144

Abstract: Colorimetric and chemoresistive gas sensing methods have aroused great interest in ... ...

Abstract	Colorimetric and chemoresistive gas sensing methods have aroused great interest in H
MeSH term(s)	Colorimetry/methods ; Gold/chemistry ; Hydrogen Sulfide ; Limit of Detection ; Metal Nanoparticles/chemistry
Chemical Substances	Gold (7440-57-5) ; Hydrogen Sulfide (YY9FVM7NSN)
Language	English
Publishing date	2022-05-13
Publishing country	Netherlands
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1491302-1
ISSN	1873-3336 ; 0304-3894
ISSN (online)	1873-3336
ISSN	0304-3894
DOI	10.1016/j.jhazmat.2022.129144
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Article: Ag Nanoparticles with Ultrathin Au Shell-Based Lateral Flow Immunoassay for Colorimetric and SERS Dual-Mode Detection of SARS-CoV-2 IgG

Liang, Penghui / Guo, Qi / Zhao, Tianyu / Wen, Cong-Ying / Tian, Zhangyu / Shang, Yanxue / Xing, Jinyan / Jiang, Yongzhong / Zeng, Jingbin

Analytical chemistry. 2022 June 03, v. 94, no. 23

2022

Abstract	Immunoglobulin detection is essential for diagnosing progression of SARS-CoV-2 infection, for which SARS-CoV-2 IgG is one of the most important indexes. In this paper, Ag nanoparticles with ultrathin Au shells (∼2 nm) embedded with 4-mercaptobenzoic acid (MBA) (Agᴹᴮᴬ@Au) were manufactured via a ligand-assisted epitaxial growth method and integrated into lateral flow immunoassay (LFIA) for colorimetric and SERS dual-mode detection of SARS-CoV-2 IgG. Agᴹᴮᴬ@Au possessed not only the surface chemistry advantages of Au but also the superior optical characteristics of Ag. Moreover, the nanogap between the Ag core and the Au shell also greatly enhanced the Raman signal. After being modified with anti-human antibodies, Agᴹᴮᴬ@Au recognized and combined with SARS-CoV-2 IgG, which was captured by the SARS-CoV-2 spike protein on the T line. Qualitative analysis was achieved by visually observing the color of the T line, and quantitative analysis was conducted by measuring the SERS signal with a sensitivity four orders of magnitude higher (detection limit: 0.22 pg/mL). The intra-assay and inter-assay variation coefficients were 7.7 and 10.3%, respectively, and other proteins at concentrations of 10 to 20 times higher than those of SARS-CoV-2 IgG could hardly produce distinguishable signals, confirming good reproducibility and specificity. Finally, this method was used to detect 107 clinical serum samples. The results agreed well with those obtained from enzyme-linked immunosorbent assay kits and were significantly better than those of the colloidal gold test strips. Therefore, this dual-mode LFIA has great potential in clinical practical applications and can be used to screen and trace the early immune response of SARS-CoV-2.
Keywords	Raman spectroscopy ; Severe acute respiratory syndrome coronavirus 2 ; analytical chemistry ; blood serum ; color ; colorimetry ; detection limit ; enzyme-linked immunosorbent assay ; gold ; immune response ; nanosilver ; qualitative analysis ; quantitative analysis
Language	English
Dates of publication	2022-0603
Size	p. 8466-8473.
Publishing place	American Chemical Society
Document type	Article
ZDB-ID	1508-8
ISSN	1520-6882 ; 0003-2700
ISSN (online)	1520-6882
ISSN	0003-2700
DOI	10.1021/acs.analchem.2c01286
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Article: Cu2O induced Au nanochains for highly sensitive dual-mode detection of hydrogen sulfide

Zhang, Fangdou / Shang, Yanxue / Yu, Ruyue / Wang, Ying / Feng, Fan / Guo, Qi / Xing, Jinyan / Tian, Zhangyu / Zeng, Jingbin / Yan, Zifeng

Journal of hazardous materials. 2022 Aug. 15, v. 436

2022

Abstract: Colorimetric and chemoresistive gas sensing methods have aroused great interest in H₂S monitoring due to their unique merits of naked-eye readout, and highly sensitive and rapid detection. However, combining these two methods for gas detection, ... ...

Abstract	Colorimetric and chemoresistive gas sensing methods have aroused great interest in H₂S monitoring due to their unique merits of naked-eye readout, and highly sensitive and rapid detection. However, combining these two methods for gas detection, especially utilizing one material as their common sensing material is a grand challenge because they are inconsistent in sensing mechanism. Taking advantage of the strong chemical affinity of Cu₂O for H₂S and the excellent performance of localized surface plasmon resonance (LSPR) of Au nanoparticles (NPs) in the visible regions and its ability as a noble metal to enhance gas sensing property, the Cu₂O-Au nanochains (NCs) were prepared for dual-mode detection of H₂S gas. The Cu₂O-Au chemoresistive gas sensor shows a 5-fold higher response than Cu₂O sensor at room temperature with a low detection limit of 10 ppb. Such good performance is attributed to the spillover effect and catalytic activity of Au NPs, and the enhanced H₂S adsorption after Au loading as revealed by density functional theory calculation. Test strips containing Cu₂O-Au produced for gaseous H₂S detection show superior color gradient changes (blue, yellow, and brown). Finally, the practicability of the method was validated by real-time monitoring H₂S released from cell culture.
Keywords	adsorption ; ambient temperature ; catalytic activity ; cell culture ; color ; density functional theory ; detection limit ; hydrogen sulfide ; nanogold ; rapid methods ; surface plasmon resonance
Language	English
Dates of publication	2022-0815
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	1491302-1
ISSN	1873-3336 ; 0304-3894
ISSN (online)	1873-3336
ISSN	0304-3894
DOI	10.1016/j.jhazmat.2022.129144
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Article ; Online: Quantitative Time-Resolved Visualization of Catalytic Degradation Reactions of Environmental Pollutants by Integrating Single-Drop Microextraction and Fluorescence Sensing.

Shang, Yanxue / Sun, Hongman / Yu, Ruyue / Zhang, Fangdou / Liang, Xinyi / Li, Honglin / Li, Jingwen / Yan, Zifeng / Zeng, Teng / Chen, Xi / Zeng, Jingbin

Environmental science & technology

2023 Volume 57, Issue 30, Page(s) 11231–11240

Abstract: Current methods for evaluating catalytic degradation reactions of environmental pollutants primarily rely on chromatography that often suffers from intermittent analysis, a long turnaround period, and complex sample pretreatment. Herein, we propose a ... ...

Abstract	Current methods for evaluating catalytic degradation reactions of environmental pollutants primarily rely on chromatography that often suffers from intermittent analysis, a long turnaround period, and complex sample pretreatment. Herein, we propose a quantitative time-resolved visualization method to evaluate the progress of catalytic degradation reactions by integrating sample pretreatment [single-drop microextraction, (SDME)], fluorescence sensing, and a smartphone detection platform. The dechlorination reaction of chlorobenzene derivatives was first investigated to validate the feasibility of this approach, in which SDME plays a critical role in direct sample pretreatment, and inorganic CsPbBr
MeSH term(s)	Environmental Pollutants ; Fluorescence ; Oxides ; Solvents
Chemical Substances	perovskite (12194-71-7) ; Environmental Pollutants ; Oxides ; Solvents
Language	English
Publishing date	2023-07-19
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ISSN	1520-5851
ISSN (online)	1520-5851
DOI	10.1021/acs.est.3c02344
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