Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52056, Aachen, Germany.
Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056, Aachen, Germany.
Angew Chem Int Ed Engl. 2016 Jun 13;55(25):7236-41. doi: 10.1002/anie.201602342. Epub 2016 May 6.
Despite the great potential of both π-conjugated organoboron polymers and BN-doped polycyclic aromatic hydrocarbons in organic optoelectronics, our knowledge of conjugated polymers with B-N bonds in their main chain is currently scarce. Herein, the first examples of a new class of organic-inorganic hybrid polymers are presented, which consist of alternating NBN and para-phenylene units. Polycondensation with B-N bond formation provides facile access to soluble materials under mild conditions. The photophysical data for the polymer and molecular model systems of different chain lengths reveal a low extent of π-conjugation across the NBN units, which is supported by DFT calculations. The applicability of the new polymers as macromolecular polyligands is demonstrated by a cross-linking reaction with Zr(IV) .
尽管π共轭有机硼聚合物和 BN 掺杂多环芳烃在有机光电领域具有巨大的潜力，但我们对于主链中含有 B-N 键的共轭聚合物的了解还很有限。在此，我们首次提出了一类新型的有机-无机杂化聚合物，它们由交替的 NBN 和对苯撑单元组成。通过 B-N 键的缩聚反应，在温和的条件下即可得到可溶性材料。聚合物和不同链长的分子模型体系的光物理数据表明，NBN 单元之间的 π 共轭程度较低，这一结果得到了 DFT 计算的支持。通过与 Zr(IV)的交联反应，证明了这些新型聚合物作为大分子多齿配体的适用性。
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