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Novel Ternary System for Electrochemiluminescence Biosensor and Application toward Pb Assay.
ACS Appl Mater Interfaces
October 2024
Molecular Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Material Science and Engineering, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
This study constructed an electrochemiluminescence (ECL) biosensor for ultrasensitive detection of Pb in a ternary system by employing DNAzyme. The ternary system is composed of a potassium-neutralized perylene derivative (KPTC) as the ECL emitter, KSO as the coreactant, and neodymium metal-organic frameworks (Nd-MOFs) as the coreaction accelerators. Nd-MOFs immobilize DNAzymes and enhance the luminescence intensity of the KPTC/KSO system.
View Article and Find Full Text PDFA highly stable electrochemical sensor with antifouling and antibacterial capabilities for mercury ion detection in seawater.
Anal Chim Acta
June 2024
Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao, 266042, China. Electronic address:
The monitoring of heavy metal ions in ocean is crucial for environment protection and assessment of seawater quality. However, the detection of heavy metal ions in seawater with electrochemical sensors, especially for long-term monitoring, always faces challenges due to marine biofouling caused by the nonspecific adsorption of microbial and biomolecules. Herein, an electrochemical aptasensor, integrating both antifouling and antibacterial properties, was developed for the detection of Hg in the ocean.
View Article and Find Full Text PDFEfficient DNA walker guided by ordered cruciform-shaped DNA track for ultrasensitive and rapid electrochemical detection of lead ion.
Anal Chim Acta
May 2024
School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China; Medical Laboratory Science, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, 533000, China; Key Laboratory of Clinical Molecular Diagnosis and Research for High Incidence Diseases in Western Guangxi, Guangxi, 533000, China. Electronic address:
The rational design of DNA tracks is an effective pathway to guide the autonomous movement and high-efficiency recognition in DNA walkers, showing outstanding advantages for the cascade signal amplification of electrochemical biosensors. However, the uncontrolled distance between two adjacent tracks on the electrode could increase the risk of derailment and interruption of the reaction. Hence, a novel four-way balanced cruciform-shaped DNA track (C-DNT) was designed as a structured pathway to improve the effectiveness and stability of the reaction in DNA walkers.
View Article and Find Full Text PDFAnticancer Metallocenes and Metal Complexes of Transition Elements from Groups 4 to 7.
Molecules
February 2024
Department of Chemistry, Faculty of Pharmacy, Medical University-Sofia, 1000 Sofia, Bulgaria.
With the progression in the field of bioinorganic chemistry, the role of transition metal complexes as the most widely used therapeutics is becoming a more and more attractive research area. The complexes of transition metals possess a great variety of attractive pharmacological properties, including anticancer, anti-inflammatory, antioxidant, anti-infective, etc., activities.
View Article and Find Full Text PDFElectrochemical Biosensors for Express Analysis of the Integral Toxicity of Polymer Materials.
Biosensors (Basel)
December 2023
Laboratory of Ecological and Medical Biotechnology, Tula State University, Friedrich Engels Street 157, 300012 Tula, Russia.
Biosensors based on an oxygen electrode, a mediator electrode, and a mediator microbial biofuel cell (MFC) using the bacteria B-1280 were formed and tested to determine the integral toxicity. bacteria exhibited high sensitivity to the toxic effects of phenol, 2,4-dinitrophenol, salicylic and trichloroacetic acid, and a number of heavy metal ions. The system " bacteria-ferrocene-graphite-paste electrode" was superior in sensitivity to biosensors formed using an oxygen electrode and MFC, in particular regarding heavy metal ions (EC of Cr, Mn and Cd was 0.
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