Binaphthyl-Bipyridyl Cyclic Dyads as a Chiroptical Switch,Journal of the American Chemical Society

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Binaphthyl-Bipyridyl Cyclic Dyads as a Chiroptical Switch
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2018-04-13 , DOI: 10.1021/jacs.8b01860
Kazuto Takaishi ₁ , Makoto Yasui ₁ , Tadashi Ema ₁

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A series of chiral cyclic dyads, axially chiral binaphthyls linked to a 3,3'-bipyridyl, was synthesized. The dyad 2 bearing methoxy groups exhibited ON/OFF properties in circularly polarized luminescence (CPL), yielding a | glum| of 1.6 × 10-3 or 0 without any change in fluorescence. This type of CPL switch is unprecedented. Regioisomer 4 exhibited a dextro/ levo rotation switching ability in [α]D. X-ray structures as well as experimental and theoretical analyses suggested that the switching properties depended on conformational changes.

中文翻译：

联萘-联吡啶环二元组作为手性开关

合成了一系列手性环状二元组，即与 3,3'-联吡啶相连的轴向手性联萘。带有甲氧基的二元组 2 在圆偏振发光 (CPL) 中表现出开/关特性，产生了闷闷不乐| 1.6 × 10-3 或 0，荧光没有任何变化。这种类型的 CPL 开关是前所未有的。区域异构体 4 在 [α]D 中表现出右旋/左旋旋转转换能力。X 射线结构以及实验和理论分析表明，转换特性取决于构象变化。

更新日期：2018-04-13

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