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Li W, Xu Z, Li P, Liu X, Chen C, Zhang Y, Liu M, Yao S. A sensitive electrochemical sensor for glutathione based on specific recognition induced collapse of silver-contained metal organic frameworks. Mikrochim Acta 2023; 191:49. [PMID: 38141093 DOI: 10.1007/s00604-023-06152-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023]
Abstract
An electrochemical sensor capable of detecting glutathione (GSH) with high sensitivity and selectivity was developed based on the unique novel electroactive silver-based metal organic framework (Ag-MOF). The Ag-MOF obtained by silver nitrate and 1,3,5-benzoic acid (H3BTC) was thoroughly characterized and was modified onto the electrode via facile drop-casting method. The electrochemical response of GSH on the Ag-MOF modified electrode showed a significant reduction in the current signal because the Ag-GSH complex had stronger specific affinity than Ag-H3BTC and resulted in the collapse of the Ag-MOF. This sensor demonstrated an extensive linear dynamic range of 0.1 nM-1 µM, along with the low detection limit of 0.018 nM. Additionally, it exhibited good reproducibility, stability, and resistance to interfering compounds. The Ag-MOF modified electrode demonstrated superior performance attributed to its rapid electron transfer rate, outstanding electrochemical redox activity, and specific recognition/competitive reaction. These factors improved both sensitivity and selectivity. The high anti-interference ability allowed for the selective detection of GSH in intricate surroundings. In the real sample testing, the RSD was lower than 3.1% and the recovery was between 98.1 and 103%. This research highlights the potential of Ag-MOFs in developing electrochemical sensors and their promising applications in determining GSH for food screening and early disease diagnosis.
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Affiliation(s)
- Wenjie Li
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China
| | - Zhenjuan Xu
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China
| | - Peipei Li
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China
| | - Xiang Liu
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China
| | - Chao Chen
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China.
| | - Youyu Zhang
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China
| | - Meiling Liu
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China.
| | - Shouzhuo Yao
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China
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Zhao YH, Ren FD, Gao L, Tan YX, Wang YY. Theoretical explanation for the DNA cleavage by GO with cation: anti-cooperativity effect among the π⋯π, cation⋯π/σ and H-bonding interactions in cytosine⋯GO⋯Mn+ (Mn+ = Na+, Mg2+, Al3+). Mol Phys 2019. [DOI: 10.1080/00268976.2019.1692149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Ying-hu Zhao
- School of Environment and Safety Engineering, North University of China, Taiyuan, People’s Republic of China
| | - Fu-de Ren
- School of Chemical Engineering and Technology, North University of China, Taiyuan, People’s Republic of China
| | - Li Gao
- School of Chemical Engineering and Technology, North University of China, Taiyuan, People’s Republic of China
| | - Ying-xin Tan
- School of Environment and Safety Engineering, North University of China, Taiyuan, People’s Republic of China
| | - Ying-yong Wang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, People’s Republic of China
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Theoretical insight into the solvent effect of H 2O and formamide on the cooperativity effect in HMX complex. J Mol Model 2017; 23:237. [PMID: 28735498 DOI: 10.1007/s00894-017-3397-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 06/25/2017] [Indexed: 01/28/2023]
Abstract
The cooperativity effects of the H-bonding interactions in HMX (1,3,5,7-tetranitro-1,3,5,7-tetrazacyclooctane)∙∙∙HMX∙∙∙FA (formamide), HMX∙∙∙HMX∙∙∙H2O and HMX∙∙∙HMX∙∙∙HMX complexes involving the chair and chair-chair HMX are investigated by using the ONIOM2 (CAM-B3LYP/6-31++G(d,p):PM3) and ONIOM2 (M06-2X/6-31++G(d,p):PM3) methods. The solvent effect of FA or H2O on the cooperativity effect in HMX∙∙∙HMX∙∙∙HMX are evaluated by the integral equation formalism polarized continuum model. The results show that the cooperativity and anti-cooperativity effects are not notable in all the systems. Although the effect of solvation on the binding energy of ternary system HMX∙∙∙HMX∙∙∙HMX is not large, that on the cooperativity of H-bonds is notable, which leads to the mutually strengthened H-bonding interaction in solution. This is perhaps the reason for the formation of different conformation of HMX in different solvent. Surface electrostatic potential and reduced density gradient are used to reveal the nature of the solvent effect on cooperativity effect in HMX∙∙∙HMX∙∙∙HMX. Graphical abstract RDG isosurface and electrostatic potential surface of HMX∙∙∙HMX∙∙∙HMX.
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Nandi S, McAnanama-Brereton SR, Waller MP, Anoop A. A tabu-search based strategy for modeling molecular aggregates and binary reactions. COMPUT THEOR CHEM 2017. [DOI: 10.1016/j.comptc.2017.03.040] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Affiliation(s)
- A. Subha Mahadevi
- Centre for Molecular Modelling, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, India 500607
| | - G. Narahari Sastry
- Centre for Molecular Modelling, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, India 500607
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