Gelification Effects on the Structure and Birefringence of Charge Transfer Complex Terthiophene Bisililated – TCNQ Hybrid Materials |
| Journal |
Materials Science Forum (Volume 517) |
| Volume |
Functional Materials and Devices |
| Edited by |
A.K. Arof and S.A. Hashim Ali |
| Pages |
257-261 |
| DOI |
10.4028/www.scientific.net/MSF.517.257 |
| Online since |
June, 2006 |
| Authors |
N. Kancono,
H.B. Senin
|
| Keywords |
Birefringence, Charge Transfer Complex CTC, Lamellar Structure, Terthiophene |
| Abstract |
Charge transfer complexes (CTC) can be readily introduced into materials by
cohydrolysis-copolymerisation of bis-silylated ter-thiophenes as precursors with TMOS and TEOS
in the presence of TCNQ. CTC formation is shown in the visible spectrum of the xerogel by the
band at 850 nm characteristic of the TCNQ·- radical anion. Vibrational spectra have shown that
strong vibration of C≡N bond at 2184, 2120 and 1595 cm-1 as peaks characteristics of CTC. The
CTC bands are weak and the complex is easily destroyed by washing with acetone, which removes
the TCNQ. The gelification effect of the charge transfer complexes on the hybrid materials of 2,5’’-
bis(trime thoxysilyl)terthiophene/TCNQ/ TMOS showed that the peak with distance of more than
11.68 Å, formed by precursors and matrices, as a lamellar structure. The birefringence of xerogel
BTS3T in presence of alkoxysilane showed that the value is near the detection limit of 0.1 – 0.4 x
10-3, which is weaker than BTS3T / THF with the birefringence value of 4.5 x 10-3. |
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