One-pot synthesis and study of spectroscopic properties of oligo(phenylenevinylene)s

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• 作者：Krupa N. Patel ; Ashutosh V. Bedekar ; ^{avbedekar@yahoo.co.in" class="auth_mail" title="E-mail the corresponding author}
• 关键词：One-pot synthesis ; Oligo(phenylenevinylene)s ; Wittig&ndash ; Heck reaction ; Solvatochromism ; Acidochromism
• 刊名：Tetrahedron Letters
• 出版年：2015
• 出版时间：25 November 2015
• 年：2015
• 卷：56
• 期：47
• 页码：6617-6621
• 全文大小：1575 K

文摘

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.