Regulating Circularly Polarized Luminescence Signals of Chiral Binaphthyl-Based Conjugated Polymers by Tuning Dihedral Angles of Binaphthyl Moieties
Regulating Circularly Polarized Luminescence Signals of Chiral Binaphthyl-Based Conjugated Polymers by Tuning Dihedral Angles of Binaphthyl Moieties
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通过调节联萘基部分的二面角来调节手性联萘基共轭聚合物的圆偏振发光信号
DOI：
10.1021/acs.macromol.6b00883
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发表时间：
2016-08-09
期刊：
影响因子：
5.5
通讯作者：
Cheng, Yixiang
中科院分区：
文献类型：
--
作者：
Wang, Yuxiang;Li, Yunzhi;Cheng, Yixiang
通过Pd催化的Sonogashira交叉偶联反应设计并合成了一系列在主链主链中掺入硼二吡咯亚甲基（BODIPY）发色团的手性联萘基共轭聚合物对映体。它们都在THE溶液中表现出强烈的棉花效应和圆偏振发光（CPL）发射信号。 CD吸收不对称因子(g(abs))和发光不对称因子(g(lum))可以通过调节由BINOL羟基的不同取代产生的联萘的二面角来调节。有趣的是，随着手性联萘基部分二面角的减小，手性聚合物可以表现出 g(abs) 和 g(lum) 逐渐增加。该工作可为CPL排放材料的发展提供新的策略。
A series of chiral binaphthyl-based conjugated polymers enantiomers incorporating boron dipyrromethene (BODIPY) chromophore in the main chain backbone were designed and synthesized by Pd-catalyzed Sonogashira cross coupling reaction. All of them can exhibit strong Cotton effects and circularly polarized luminescence (CPL) emission signals in THE solution. The CD absorption dissymmetry factors (g(abs)) and the luminescence dissymmetry factors (g(lum)) can be regulated by tuning the dihedral angles of binaphthyl arising from different substitutions of BINOL hydroxyls. Interestingly, the chiral polymers can exhibit the gradual increase of both g(abs) and g(lum) as the decrease of dihedral angles of the chiral binaphthyl moiety. This work can provide a new strategy for the development of CPL emission materials.