Preparation and characterization of poly(indole-3-carboxaldehyde) film at the glassy carbon surface


Deletioglu D., HASDEMİR E. , SOLAK A. O. , ÜSTÜNDAĞ Z., GÜZEL R.

THIN SOLID FILMS, vol.519, no.2, pp.784-789, 2010 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 519 Issue: 2
  • Publication Date: 2010
  • Doi Number: 10.1016/j.tsf.2010.07.125
  • Title of Journal : THIN SOLID FILMS
  • Page Numbers: pp.784-789
  • Keywords: Glassy carbon, Poly(indole-3 carboxaldehyde), Electrochemical impedance spectroscopy, X ray photoelectron spectroscopy, Reflection-absorption infrared spectroscopy, Contact angle, Ellipsometry, ELECTROCHEMICAL POLYMERIZATION, COVALENT MODIFICATION, ELECTRODES, BEHAVIOR, INDOLE, GOLD, POLYINDOLE, MONOLAYERS, REDUCTION, ELECTROPOLYMERIZATION

Abstract

Indole-3-carboxaldehyde (In3C) monomer was oxidized by electrochemical methods at the glassy carbon (GC) electrode in 0 05 M tetrabutylammonium tetrafluoroborate in acetonitrile with the aim to prepare a modified electrode Modification was performed using cyclic voltammetry (CV) scanning from 0 0 V to 2 0 V at a scan rate of 50 mV s(-1) for 10 cycles in 1 mM In3C monomer solution The modified GC surface (In3C-GC) was characterized by CV response of potassium ferricyanide and ferrocene redox probes as well as by the electrochemical impedance spectroscopy The modified surface was analyzed by reflection-absorption infrared spectroscopy and compared with the spectrum of the monomeric In3C Elemental composition of the surface was determined by X-ray photoelectron spectroscopy Contact angle measurements was also performed to check the changes in hydrophobic character of the bare GC and compared to that of In3C-GC surface Thickness of the oligomeric/polymeric film was investigated by ellipsometric measurements and a surface confined polymerization mechanism was proposed (c) 2010 Published by Elsevier B V