Number: 2002-019-1-400
Title: Conducting polymer colloids and nanofilms
Task Group
Chairman: J. Stejskal
Members: S. Fedorova,
J. Janca, P.
Mokreva, M. Omastova,
J. Prokes, A.
Riede, I. Sapurina,
T.V. Shishkanova,
M. �pirkova, L.
Terlemezyan, M. Tobolkova,
and M. Trchova
Completion Date: 2005 - project completed
Objective:
The design of processible forms of conducting polymers. Preparation
of water-borne polyaniline colloids and in situ polymerized films
of submicrometre thickness.
Description:
The development of processible forms of conducting polymers by the
formation of colloids and thin nanofilms is proposed. The colloids are
produced during the oxidation of aniline with ammonium peroxydisulfate
in acidic aqueous medium in the presence of a suitable polymeric stabilizer
[1]. The polyaniline films grow in situ under similar reaction conditions
virtually on any surface (or interface) [2]. The various macroscopic
and microscopic substrates coated with conducting-polymer overlayer
find uses in analytical chemistry, separation science, organic catalysis,
conducting composite materials and in the development of microelectronics.
Especially the nanofilms are of interest because of the brush-like ordering
of polymer chains in them [2]. The project proposes to follow the same
preparative protocol in various laboratories and to compare the properties
of the resulting materials on international level. For the colloidal
forms, the particle size and polydispersity determined by dynamic light
scattering will be the main criterion. The films will be compared with
respect to their thickness by using optical absorption measurements
after calibration.
This project continues the work on conducting polymers after the completion
of the IUPAC project 1999-024-1-400
in 2002 (cf. "Polyaniline: The Preparation of a Conducting Polymer",
Pure Appl.
Chem.
Vol. 74, No. 5, 857-867 (2002).
[1] J. Stejskal, J. Polym. Mater. 18, 225-258 (2001).
[2] I. Sapurina, A. Riede, J. Stejskal, Synth. Met. 123, 503-507
(2001).
Progress:
In May 2004, a draft titled "Polyaniline. Thin Films and Colloidal
Dispersions", has been submitted to Pure Appl. Chem. The
Technical Report was revised and accepted for publication in Oct 2004;
scheduled for print early 2005.
project completed - IUPAC Technical Report titled "Polyaniline:
Thin films and colloidal dispersions" published in Pure
Appl. Chem.
77(5), 815-826, 2005
Last update: 9 May 2005
<project announcement published in
Chem.
Int.
24(5) 2002>
