Journal
MACROMOLECULAR CHEMISTRY AND PHYSICS
Volume 211, Issue 21, Pages 2286-2291Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/macp.201000447
Keywords
charge transport; conjugated polymers; photophysics; synthesis; wide-angle X-ray scattering (WAXS)
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Funding
- European Commission [MRTN-CT-2006-035884]
- BMBF
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Benzo[1,2-b:4,5-b'] diselenophene (BDS) has been incorporated for the first time in a polymer. bis(Stannyl)-functionalized BDS was copolymerized with 3,3'-bis(alkyl)-5,5'-bithiophenes (dodecyl and tetradecyl side chains) through Stille copolymerization, to yield p-type polymer semiconductors for organic field-effect transistor application. The electronic and structural effect of the selenium atoms, compared to sulphur atoms in analogous copolymers, is described. The molecular weight has a decisive influence on the photophysical properties and supramolecular ordering, expressed in field-effect transistor measurements. Saturation mobilities around 10(-2) cm(2) . V-1 s(-1) are obtained on standard silicon substrates.
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