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Issue 6, 2018
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Quantum chemical and electrochemical studies of lysine modified carbon paste electrode surfaces for sensing dopamine

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Abstract

In the current work, we have improved the sensitivity of a carbon paste electrode (CPE) from lysine for the sensitive detection of dopamine (DA). We have used density functional theory based quantum chemical calculations to characterize the lysine modified CPE (LMCPE) surface at the atomic scale. 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 showed that the LMCPE surface is stable and efficient in sensing DA in commercial samples.

Graphical abstract: Quantum chemical and electrochemical studies of lysine modified carbon paste electrode surfaces for sensing dopamine

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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., 2018,42, 4501-4506
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    Quantum chemical and electrochemical studies of lysine modified carbon paste electrode surfaces 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, 42, 4501
    DOI: 10.1039/C7NJ04998F

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