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Synthesis, Characterization and Properties of Conjugated Poly(1-Alkyl-2,5-Pyrrylene Vinylene)

Published online by Cambridge University Press:  10 February 2011

In Tae Kim  and
Ronald L. Elsenbaumer
In Tae Kim
Affiliation:
Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, USA(elsenbaumer@uta.edu)
Ronald L. Elsenbaumer
Affiliation:
Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, USA(elsenbaumer@uta.edu)
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Abstract

A series of poly(N-alkylpyrrylene vinylenes)( alkyl = methyl(l), hexyl(2), dodecyl(3)) have been synthesized from the monomer, N-alkyl-2,5-bis(thiophenylmethylene)pyrrole, by base induced elimination and polymerization. The resulting deep purple conjugated polymers (2, 3) were soluble in a variety organic solvents. The electrical conductivities of the polymers lie in the range, 10−2 to 2.5 S/cm. The highest yield was obtained when the polymers were synthesized in refluxing THF with a monomer/ base mole ratio of 1/4. The optical band gap of the undoped polymers were 1.89 eV(1), 1.69 eV(2) and 1.65 eV(3). Characterization of the polymers includes IR, CV, 1H and 13C NMR, UV-vis spectroscopy, TGA and molecular weight studies.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 488: Symposium J – Electrical, Optical & Magnetic Properties of Organic IV , 1997 , 665
Copyright
Copyright © Materials Research Society 1998

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