硼异戊烯是含有三配位硼的七元不饱和环系。尽管迄今已报道了许多用芳族体系环化的硼异氰酸酯化合物,但仅合成了一种[ b,d,f ]环化的四环硼异氰酸酯。在本研究中,我们合成苯并[ d ]噻吩并[ b,˚F ] borepins作为一类新建立用于通过以下结构特征动机功能材料块组成:(1)二噻吩的化学稳定性高[ b,˚Fborepin物种;(2)具有孔销环的高共轭四环体系;(3)通过在苯环上引入官能团而易于调节的电子结构。所制得的销钉在空气中无论在溶液中还是固体中都是稳定的,可以通过改变苯环上的取代基来微调电子状态。有趣的是,DFT计算表明,LUMO和LUMO + 1的能级受苯并[ d ]环的强烈影响,这取决于稠合噻吩环上硼桥联的位置。NICS和HOMA方法证明,苯并[ d ]二噻吩并[ b,fborepin系统相对较小。我们还报告了首次在硼销化合物中观察到固态的苯并[ d ] dithieno [
Synthesis and Optical Properties of Anthryl-substituted Tetracyclic Borepins
作者:Yohei Adachi、Kohei Yamada、Joji Ohshita
DOI:10.1246/cl.220139
日期:2022.6.5
Anthracene-substituted triarylboranes have been widely studied as optoelectronic materials because of their unique photophysical properties. In this work, we synthesized new anthryl-substituted boranes with a seven-membered aromatic ring system, so-called borepins. The anthryl-substituted tetracyclic borepins exhibited limited electronic interaction in the ground state, whereas their fluorescence spectra