One-pot synthesis and study of spectroscopic properties of oligo(phenylenevinylene)s
作者:Krupa N. Patel、Ashutosh V. Bedekar
DOI:10.1016/j.tetlet.2015.10.033
日期:2015.11
Two series of OPVs (oligo(phenylenevinylene)), that is, ((1E,1'E)-(2,5-dimethoxy-1,4-phenylene)bis (ethene-2,1-diyl))dibenzene derivatives and 4-((E)-4-((E)-styryl)styryl)pyridine derivatives with different functional groups of varying electronic properties have been synthesized by one-pot Wittig-Heck methodology. The synthesized derivatives have been studied for their optical properties. Amongst them the ((1E,1'E)-(2,5-dimethoxy-1,4-phenylene)bis(ethene-2,1-diyl))dibenzene derivatives with appropriate changes in the end group showed a significant impact on the UV absorption and emission spectra. Particularly NO2-OPV showed distinct solvatochromism in the wavelength range of 218 nm in different solvents. Whereas 4-((E)-4((E)-styryl)styryl)pyridine derivatives showed clear acidochromism which can be detected visually as well as spectroscopically. (C) 2015 Elsevier Ltd. All rights reserved.