Journal Title
Title of Journal: Struct Chem
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Abbravation: Structural Chemistry
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Authors: G Neculqueo V Rojas Fuentes A López R Matute S O Vásquez F Martínez
Publish Date: 2012/03/09
Volume: 23, Issue: 6, Pages: 1751-1760
Abstract
E12bis2thienylvinylene TV E12bis3octyl2thienylvinylene TOV E12bis32ethylhexyl2thienylvinylene T2EHV and E12bis22’bithienyl vinylene BTV have been synthesized by a combination of formylation reaction and Mc Murry dimerization UV–Vis spectra of BTV showed the longest wavelength absorption TOV and T2EHV showed a bathochromic shift to the red compared with TV due to an increment of delocalization of the conjugated πsystem as the result of the weakening of the carbon–carbon double bonds of the thienyl rings due to the substitution of one hydrogen by the alkyl group Based on optical data the effect of linear and branched alkyl chain and extension of conjugation length on the electronic properties is discussed 1H 13CNMR UV–Visible Fluorescence data are discussed and theoretical DFT and TDDFT calculations of ground state and excited states have been also considered in the analysis and explanation of results
Keywords:
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