Nanostructured electropolymerized film of 5-amino-2-mercapto-1,3,4-thiadiazole on glassy carbon electrode for the selective determination of L-cysteine

Kalimuthu, Palraj and John, S. Abraham (2009) Nanostructured electropolymerized film of 5-amino-2-mercapto-1,3,4-thiadiazole on glassy carbon electrode for the selective determination of L-cysteine. Electrochemistry Communications, 11 2: 367-370. doi:10.1016/j.elecom.2008.12.006


Author Kalimuthu, Palraj
John, S. Abraham
Title Nanostructured electropolymerized film of 5-amino-2-mercapto-1,3,4-thiadiazole on glassy carbon electrode for the selective determination of L-cysteine
Journal name Electrochemistry Communications   Check publisher's open access policy
ISSN 1388-2481
1873-1902
Publication date 2009-02-01
Year available 2008
Sub-type Article (original research)
DOI 10.1016/j.elecom.2008.12.006
Volume 11
Issue 2
Start page 367
End page 370
Total pages 4
Place of publication Amsterdam, Netherlands
Publisher Elsevier BV
Language eng
Formatted abstract
We report the electropolymerization of 5-amino-2-mercapto-1,3,4-thiadiazole (AMT) in 0.1 M H2SO4 on glassy carbon electrode (GCE) and utilization of the resulting polymer film for the selective determination of l-cysteine (CY) at physiological pH for the first time. The electropolymerized film was characterized by cyclic voltammetry (CV), atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). AFM image shows a homogeneous film containing spherical structure with a thickness of ∼25 nm for p-AMT deposited by 15 cycles. The binding energies at 163.5, 400.2 and 398.8 eV in the XPS corroborate that the p-AMT was linked by S–S, HN–NH and Ndouble bond; length as m-dashN groups. The p-AMT film successfully separates the voltammetric signals of CY and ascorbic acid (AA) with a potential difference of 480 mV which is higher than the previous reports.
Keyword Electropolymerization
5-Amino-2-mercapto-1,3,4-thiadiazole
L-Cysteine
Xps
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Available online 10 December 2008

Document type: Journal Article
Sub-type: Article (original research)
Collections: ERA 2012 Admin Only
School of Chemistry and Molecular Biosciences
 
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