Chain-Growth Horner-Wadsworth-Emmons Condensation Polymerization Initiated with an Aliphatic Aldehyde

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  • Sato Keichiro
    Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University
  • Goto Eisuke
    Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University
  • Ochiai Yuto
    Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University
  • Higashihara Tomoya
    Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University

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Abstract

<p>The effective initiation for the chain-growth Horner-Wadsworth-Emmons (HWE) condensation polymerization was succeeded by utilizing an aliphatic aldehyde. Due to the higher electrophilicity of the aliphatic aldehyde compared with the aromatic one, the reactivity of the initiation might be accelerated, producing uniform intermediates to result in the formation of well-defined poly(3-(2-ethylhexyl)thienylene vinylene) (P3EHTV). Consequently, P3EHTV possessed the predictable molecular weight and lower molar-mass dispersity (ÐM =1.16) value than that of P3EHTV obtained by employing aromatic aldehyde compounds as the initiators. In this polymerization system, neither transition metals nor halogens are utilized to realize low environmental-load synthesis of well-defined π-conjugated polymers.</p>

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