A new route to synthesize high degree polythiophene in a room temperature melt medium
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
A new route to synthesize high degree polythiophene in
a room temperature melt medium
|
|
| Creator |
Geetha, S.
Trivedi, D.C. |
|
| Subject |
Electrochemical Materials Science
|
|
| Description |
Conducting polymers suffer from folds and kinks because of random nucleation and solvation of a free radical cation to yield a cross
linked/disordered polymer and therefore a solvent free electrochemical polymerization in a room temperature melt medium is adopted to yield
a high degree polymer with high electronic conductivity. Electropolymerization of thiophene was performed on platinum/ITO substrates using
cyclic voltametry or galvenostatic mode in chloroaluminate room temperature melt medium to obtain a reddish brown free standing film which
can be peeled off from the electrode surface after a minimum of 10 cycles. The conductivity was found to be around 102 S/cm. The degree of
polymerization was calculated to be around 44 from IR studies. A layered structure supportive for high degree of polymerization was witnessed
from potential step technique. From UV spectra the charge carriers were found to be bipolarons. The morphology of the film was found to be
crystalline from SEM and XRD studies. Capacitative impedance properties for doped samples were interpreted from impedance spectroscopy.
|
|
| Publisher |
Elsevier
|
|
| Date |
2005
|
|
| Type |
Article
PeerReviewed |
|
| Format |
application/pdf
|
|
| Identifier |
http://cecri.csircentral.net/198/1/101-2005.pdf
Geetha, S. and Trivedi, D.C. (2005) A new route to synthesize high degree polythiophene in a room temperature melt medium. Synthetic Metals, 155 (1). pp. 232-239. |
|
| Relation |
http://cecri.csircentral.net/198/
|
|