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Quantum chemical and electrochemical studies of lysine modified carbon paste electrode surface for sensing dopamine.

Abstract

In the current work, we have improved the sensitivity of the carbon paste electrode (CPE) from lysine for the sensitive detection of dopamine (DA). We have used the density functional theory based quantum chemical calculations to characterize the lysine modified CPE (LMCPE) surface in atomic scale. The quantum chemical modeling with analytical Fukui results suggests that lysine acts as an electrocatalyst on the LMCPE surface by increasing its active electron transfer (ET) sites. The obtained voltammetric results are in good agreement with the theoretical observations and electrochemical results interpreted that LMCPE surface is stable and efficient to sense DA in commercial samples.

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Publication details

The article was received on 17 Dec 2017, accepted on 12 Feb 2018 and first published on 13 Feb 2018


Article type: Paper
DOI: 10.1039/C7NJ04998F
Citation: New J. Chem., 2018, Accepted Manuscript
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    Quantum chemical and electrochemical studies of lysine modified carbon paste electrode surface for sensing dopamine.

    G. Kudur Jayaprakash, B. E. Kumara Swamy, H. Nicole González Ramírez, M. Tumbre Ekanthappa and R. Flores-Moreno, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C7NJ04998F

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