An 18-connected {MoNiP}-based 2-D layered network was constructed for photoelectrochemical sensing of levofloxacin, and it represents the highest connection number of the {MoNiP} wheel cluster to date. The detection limit is as low as 6.46 nM with a high sensitivity of 110.87 μA μM and good practicality in a milk sample.
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http://dx.doi.org/10.1039/d4cc06389a | DOI Listing |
Chem Commun (Camb)
January 2025
Hebei Technology Innovation Center for Energy Conversion Materials and Devices, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang, Hebei 050024, P. R. China.
An 18-connected {MoNiP}-based 2-D layered network was constructed for photoelectrochemical sensing of levofloxacin, and it represents the highest connection number of the {MoNiP} wheel cluster to date. The detection limit is as low as 6.46 nM with a high sensitivity of 110.
View Article and Find Full Text PDFACS Sens
January 2025
Key Laboratory of Optic-Electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
Precise and sensitive analysis of specific DNA in actual human bodily fluids is crucial for the early diagnosis of major diseases and for a deeper understanding of DNA functions. Herein, by grafting a peptide-conjugated hairpin DNA probe to a covalent organic framework (COF)-based photocathode, a robust anti-interference photoelectrochemical (PEC) DNA bioassay was explored, which could specifically resist potential interference from nonspecific proteins and reducing species. Human immunodeficiency virus (HIV) DNA was used as the target DNA (tDNA) for the PEC DNA bioassay.
View Article and Find Full Text PDFACS Appl Mater Interfaces
January 2025
School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, China.
Sensitive and accurate determination of acetamiprid is highly desirable for guaranteeing food safety. In this Letter, an energy-transfer-based dual-mode biosensor was developed using zinc-based metal-organic frameworks (Zn-MOFs) acting as both photoelectrochemical (PEC) and electrochemiluminescent (ECL) donors and Pt@CuO cubic nanocrystals (CNs) as the energy acceptor for detecting acetamiprid. By integration of aptamer recognition with two-step DNA circuit amplification (entropy-driven DNA cycle and DNA walker), the detection of acetamiprid was converted into the assay of abundant intermediate DNA strands.
View Article and Find Full Text PDFTalanta
December 2024
Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan, 430074, China. Electronic address:
The mortality rate of tumor is still very high till now. Circulating tumor cells (CTCs) are the major culprit of high cancer mortality. To improve survival rate of cancer patients, real-time monitoring and quantitative detection of CTCs are of indescribable value.
View Article and Find Full Text PDFAnal Chem
December 2024
School of Materials, Shenzhen Campus of Sun Yat-sen University, Shenzhen, Guangdong 518107, P. R. China.
The integration of a photosensitive gate into an organic electrochemical transistor has currently emerged as a promising route for biological sensing. However, the modification of the photosensitive gate always involves complex processes, and the degradation of sensitivity of the functional materials under illumination will significantly decrease the stability of the devices. Herein, we designed an organic photoelectrochemical transistor (OPECT) biosensor employing horseradish peroxidase (HRP)@glucose oxidase (GOx)/Pt/n-Si as the photosensitive gate based on the "shadow effect".
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