Synthesis and polymerization of 2-and 3-substituted thiophene derivatives linked by polyether bridges
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Date
2004
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Science Sa
Abstract
New compounds consisting of 2- and 3-thienyl units linked by polyether bridges have been synthesized and their electrochemical polymerization was performed via constant potential electrolysis (CPE) in an electrolytic solution containing 0.1 M tetrabutylammonium hexafluorophosphate (TBAPF(6)) dissolved in CH3CN. 2-Thienyl monomers (I and II), but not 3-thienyl monomers (III and IV), were also polymerized via chemical oxidation, which yielded broken pi-conjugated polymer products. The polymers were characterized using H-1 NMR and FT-IR spectroscopic techniques. It was found that both chemical and electrochemical oxidation of 2-thienyl monomers gave mainly poly(2,2'-bithiophenemethylene) due to elimination of polyether chains during the polymerization reaction. On the other hand, electrochemical oxidation of 3-thienyl monomers resulted in corresponding polymers without any cleavage of polyether bridges. Spectroelectrochemical (SPEL) properties of the products were investigated using UV-Vis spectroscopic techniques. (C) 2004 Elsevier B.V. All rights reserved.
Description
Onal, ahmet muhtar/0000-0003-0644-7180
Keywords
electrochemical polymerization, SPEL, ESR, polyether bridged-substituted thiophenes
Turkish CoHE Thesis Center URL
Citation
6
WoS Q
Q1
Scopus Q
Q2
Source
Volume
573
Issue
1
Start Page
189
End Page
196