Modification of Gold Surface with Gold Nanoparticles and Cyclohexyl Dithiocarbamate as a Selective Sensor for Cysteine. (23rd December 2012)

• Record Type: Journal Article
• Authors: AlShamaileh, Ehab; Saadeh, Haytham; Favry, Valerie
• Other Names: Gimeno Concha Academic Editor.
• Is Part Of: Journal of chemistry. Volume 2013(2013)
• Publication Date: 2012-12-23
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1155/2013/383921
• Languages: English
• ISSNs: 2090-9063

Abstract

Abstract : The self-assembly of cyclohexylamine dithiocarbamate (C6 DTC) on gold (Au) and gold nanoparticles (AuNPs) was studied electrochemically using cyclic voltammetry (CV). Cyclic voltammetry was used to study the system Fe ( CN ) 6 3 - / Fe ( CN ) 6 4 - at the electrode surface of (C6 DTC/Au) and (C6 DTC/AuNPs). The application of the resulting chemically modified surface as a selective sensor for cysteine, among other amino acids, was investigated. Linear oxidative desorption technique was used to characterize the modified electrode that consists of the self-assembled monolayer of cyclohexylamine dithiocarbamate on gold nanoparticles deposited on Au electrode (C6 DTC/AuNPs/Au). The results showed an enhancement in the oxidation peak of cysteine on the modified electrode and hence a greater sensitivity.