Synthesis, characterization, and stability of poly(3,4-dibutoxythiophenevinylene) copolymers

Autor:	Margaret Louise Blohm, Paul C. Van Dort, James Edward Pickett
Rok vydání:	1993
Předmět:	chemistry.chemical_classification Condensation polymer Polymers and Plastics Chemistry Band gap Organic Chemistry Doping Analytical chemistry Polymer Conductivity Inorganic Chemistry Crystallinity Materials Chemistry Organic chemistry Thermal stability Visible spectrum
Zdroj:	Macromolecules. 26:2704-2710
ISSN:	1520-5835 0024-9297
DOI:	10.1021/ma00063a011
Popis:	Poly(3,4-dibutoxythiophenevylene) was prepared in two steps using nickel-catalyzed Grignard coupling reactions with 1,2-dichloroethylene to yield a high molecular weight polymer that could be cast into tough free-standing films. The visible spectrum showed an absorption minimum of 607 nm and a band gap of 1,62 eV. Doping with FeCl 3 turned the deep blue film to transparent light gray and resulted in a conductivity of 1 S cm -1 using the four-probe technique. DSC measurements revealed no T g but showed a T m at 168°C. The unusual partial crystallinity was confirmed by WAXD. The polymer exhibited good thermal stability but was susceptible to photooxidation and to reaction with ambiant levels of ozone
Databáze:	OpenAIRE
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