Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 138, Issue 15, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.4800769
Keywords
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Funding
- Consejeria de Innovacion, Ciencia y Empresa, Junta de Andalucia [FQM-337]
- Unidad Asociada CSIC-Universidad de Jaen
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In the present study, a series of crystalline poly(arylene-ethynylene) copolymers containing phenylethynylene and 2,5-dialkoxy-phenylethynylene units together with 1,3,4-thiadiazole rings has been modeled by means of periodic calculations. Optimized three-dimensional polymeric structures show interchain distances that are consistent with the experimental values reported for a related polymer. It has also been observed that the presence of pendant alkoxy chains brings on both a further flattening and a separation of the coplanar chains. This fact is linked to a decrease of the interchain cofacial distance. The electron transport character of the polymer crystal structures was assessed through Marcus theory. Electronic coupling between neighboring polymer chains is most influenced by the presence of alkoxy chains giving rise to an expectable enhancement of the electron hopping mobility. (C) 2013 AIP Publishing LLC. [http://dx.doi.org/10.1063/1.4800769]
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