Conductive Polymer Brushes of Regioregular Head-to-Tail Poly(3-alkylthiophenes) via Catalyst-Transfer Surface-Initiated Polycondensation

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• 作者：Volodymyr Senkovskyy ; Natalya Khanduyeva ; Hartmut Komber ; Ulrich Oertel ; Manfred Stamm ; Dirk Kuckling ; Anton Kiriy
• 刊名：Journal of the American Chemical Society
• 出版年：2007
• 出版时间：May 23, 2007
• 年：2007
• 卷：129
• 期：20
• 页码：6626 - 6632
• 全文大小：382K
• 年卷期：v.129,no.20(May 23, 2007)
• ISSN：1520-5126

文摘

We describe a new method to grow conductive polymer (CP) brushes of regioregular head-to-tail poly(3-alkylthiophenes) (P3AT) via surface-initiated polycondensation of 2-bromo-5-chloromagnesio-3-alkylthiophene. A simple procedure for the preparation of the Ni(II) macroinitiator by the reaction ofNi(PPh₃)₄ with photocross-linked poly-4-bromostyrene films was developed. Exposure of the initiator layersto the monomer solution leads to selective chain growth polycondensation of the monomer from the surface,resulting in P3AT brushes in a very economical way. In contrast to the P3AT films prepared by traditionalsolvent casting methods, our approach leads to mechanically robust CP films, stable against delamination.We believe that our approach will be helpful in the fabrication of all-plastic devices.