Single step synthesis of gold–amino acid composite, with the evidence of the catalytic hydrogen atom transfer (HAT) reaction, for the electrochemical recognition of Serotonin

Abstract

A composite architecture of amino acid and gold nanoparticles has been synthesized using a generic route of ‘in-situ polymerization and composite formation (IPCF)’ [1,2]. The formation mechanism of the composite has been supported by a model hydrogen atom (H•≡H++e−) transfer (HAT) type of reaction which belongs to the proton coupled electron transfer (PCET) mechanism. The ‘gold–amino acid composite’ was used as a catalyst for the electrochemical recognition of Serotonin.