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Reversal aggregation-induced circular dichroism from axial chirality transfer via self-assembled helical nanowires

机译:通过自组装螺旋纳米线的轴向手性转移逆向聚集诱导的圆二色性

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Two chiral binaphthyl-based enantiomers, (R/S)-7, were designed and synthesized by Sonogashira cross-coupling reaction of AIE-active TPE and O-BOPHY. Interestingly, the resulting (R/S)-7 can exhibit emission enlargement response in DCM/hexane mixtures due to AIE behavior, but fluorescence quenching in THF/H2O mixtures due to ACQ effect. (R/S)-7 can produce gradual reversal AICD (aggregation-induced circular dichroism) signals from solution to aggregation, which can be attributed to axial chirality transfer to self-assembled helical nanowires in aggregation state.
机译:通过AIE活性TPE和 O <的Sonogashira交叉偶联反应,设计并合成了两个手性联萘基对映体( R / S )-7。 / em> -BOPHY。有趣的是,由于AIE行为,所得( R / S )-7在DCM /己烷混合物中可表现出发射放大响应,但在THF / H 中会发生荧光猝灭由于ACQ效应, 2 O混合物。 ( R / S )-7可以从溶液到聚集产生逐渐反转的AICD(聚集诱导的圆二色性)信号,这可以归因于轴向手性向自组装的螺旋纳米线处于聚集状态。

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