Title

Spectroscopic, Microscopic, and Surface Analysis of Alkanethiol- and Fluoroalkanethiol-Modified Conducting Polymer Thin Films

ACS Citation

Bergman, B.; Hanks, T. W. Spectroscopic, Microscopic, and Surface Analysis of Alkanethiol- and Fluoroalkanethiol-Modified Conducting Polymer Thin Films. Macromolecules 2000, 33, 8035-8042.

Abstract

Electrochemically grown films of polyaniline, polypyrrole, polythiophene, and poly(ethylenedioxythiophene) were treated with alkane- and fluoroalkanethiols for 1?24 h. The resulting films showed surface energies and polarities similar to glass slides coated with monolayers of the corresponding alkyl- and fluoroalkylsilanes. Treatment of the polyaniline, polypyrrole, and, to a lesser extent, poly(ethylenedioxythiophene) films resulted in covalent bonding of the thiol to the polymer backbone as evidenced by X-ray photoelectron, energy-dispersive X-ray, and electronic spectroscopies. Polypyrrole and poly(ethylenedioxythiophene) films showed reduced electroactivity upon treatment, while the derivatized polyaniline could be returned to a conducting state. Polythiophene primarily oxidized the thiols to soluble products, leaving the polymer backbone unaffected. Electrochemically grown films of polyaniline, polypyrrole, polythiophene, and poly(ethylenedioxythiophene) were treated with alkane- and fluoroalkanethiols for 1?24 h. The resulting films showed surface energies and polarities similar to glass slides coated with monolayers of the corresponding alkyl- and fluoroalkylsilanes. Treatment of the polyaniline, polypyrrole, and, to a lesser extent, poly(ethylenedioxythiophene) films resulted in covalent bonding of the thiol to the polymer backbone as evidenced by X-ray photoelectron, energy-dispersive X-ray, and electronic spectroscopies. Polypyrrole and poly(ethylenedioxythiophene) films showed reduced electroactivity upon treatment, while the derivatized polyaniline could be returned to a conducting state. Polythiophene primarily oxidized the thiols to soluble products, leaving the polymer backbone unaffected.

Source Name

Macromolecules

Publication Date

1-1-2000

Volume

33

Issue

21

Page(s)

3903-3918

Document Type

Citation

Citation Type

Article