Title

Photolithographic Synthesis of Polyaniline Fibers

Abstract

Thin films of polyaniline nanofibres were synthesized using ultraviolet irradiation of aqueous solutions of aniline, nitric acid, and ammonium peroxydisulfate. The parent solution was spin coated on a planar substrate, and allowed to polymerize in the dark for 4-5 min. The substrate was then exposed to ultraviolet light for 6-10 min. Irradiation was carried out either with a frequency-tripled Nd:YAG laser, or with a mercury vapour lamp. The polyaniline fibres and films were characterized with scanning and transmission electron microscopy, and with Fourier transform infrared spectroscopy. Fibres had typical diameters between 20 and 150 nm, and lengths of the order of microns. Bulk polyaniline formed in the unirradiated portion of the samples. Using a masking technique, alternating stripes of bulk polyaniline and polyaniline nanofibres were produced.

Department(s)

Physics

Second Department

Chemistry

Keywords and Phrases

Fourier Transform Infrared Spectroscopy; Photolithographic Synthesis; Polyaniline Nanofibres

International Standard Serial Number (ISSN)

0957-4484

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2005 Institute of Physics - IOP Publishing, All rights reserved.

This document is currently not available here.

Share

 
COinS