Otto-Diels-Institut für Organische Chemie, Universität Kiel, 24098 Kiel (Germany).
Angew Chem Int Ed Engl. 2014 Nov 17;53(47):12916-20. doi: 10.1002/anie.201407377. Epub 2014 Sep 24.
The incorporation of heavier Group 14 element heteroles into semiconducting polymers leads to unusual optoelectronic properties. However, polymers containing stannoles have not been accessible to date. We report a synthetic route to a well-defined, stannole-containing polymer, the first example of this class of π-conjugated polymers. This route was made possible by developing difunctionalized stannole monomers and highly tin-selective Stille coupling reactions that leave the tin in the stannole untouched. Compared to poly(3-n-hexylthiophene), the resulting polymer displays a remarkable bathochromic shift in its absorption.
将较重的第 14 族元素杂环掺入半导体聚合物中会导致异常的光电性能。然而，目前还无法获得含有锡烷的聚合物。我们报告了一种制备具有明确结构的含锡烷聚合物的合成途径，这是此类π共轭聚合物的首例。该途径的实现得益于开发了双官能化的锡烷单体和高锡选择性的 Stille 偶联反应，这些反应使锡烷中的锡保持不变。与聚(3-正己基噻吩)相比，所得聚合物的吸收发生了显著的红移。
