Transformation of Regioregular Organotitanium Polymers into Group 16 Heterole-Containing π-Conjugated Materials

Authors

  • Hiroki Nishiyama,

    1. Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259, G1-9, Nagatsuta, Midori-ku, Yokohama, 226-8502, Japan, Fax: (+) 81-45-924-5489
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  • Tomoko Kino,

    1. Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259, G1-9, Nagatsuta, Midori-ku, Yokohama, 226-8502, Japan, Fax: (+) 81-45-924-5489
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  • Ikuyoshi Tomita

    Corresponding author
    1. Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259, G1-9, Nagatsuta, Midori-ku, Yokohama, 226-8502, Japan, Fax: (+) 81-45-924-5489
    • Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259, G1-9, Nagatsuta, Midori-ku, Yokohama, 226-8502, Japan, Fax: (+) 81-45-924-5489.
    Search for more papers by this author

Abstract

Regioregular organometallic polymers with titanacyclopentadiene units, obtained from terminal diynes and a low-valent titanium complex, were subjected to reactions with disulfur dichloride and selenium (I) chloride to give π-conjugated polymers with thiophene and selenophene units in the main chain in 63% and 86% yields. Their number-average molecular weights were estimated as 4300 and 5700, respectively. Both polymers were found to be fully π-conjugated and their HOMO energy levels were remarkably high (–5.3 eV and –5.0 eV for thiophene- and selenophene-containing polymers, respectively) as supported by their UV-vis absorption spectra and CV analyses.

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