Binaphthyl-bridged pyrenophanes: Intense circularly polarized luminescence based on a D2 symmetry strategy
Binaphthyl-bridged pyrenophanes: Intense circularly polarized luminescence based on a D2 symmetry strategy
复制标题
联萘桥芘芬：基于 D2 对称策略的强圆偏振发光
DOI：
10.1002/anie.202204609
复制
发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Tadashi Ema
中科院分区：
文献类型：
--
作者：
Kazuto Takaishi;Sho Murakami;Fumiya Yoshinami;Tadashi Ema
合成了一系列由芘和联萘部分交替连接而成的D2-对称大环化合物（联萘桥联吡喃）。其中，在芘的2，7-位具有醚连接基的芘番表现出强烈的圆偏振发光（CPL），|闷闷不乐|价值0.053该值是迄今为止准分子的最高值，并且对温度、溶剂或浓度不敏感。CPL起源于一个扭曲的芘准分子，与（R）-联萘部分产生左手扭曲准分子，它表现出（-）-CPL。电和磁跃迁偶极矩完全平行，这是强CPL的最佳关系。
A series ofD2‐symmetric macrocycles composed of alternately linked pyrene and binaphthyl moieties (binaphthyl‐bridged pyrenophanes) have been synthesized. Among them, a pyrenophane possessing ether linkers at the 2,7‐positions of the pyrenes exhibited intense circularly polarized luminescence (CPL) with a |glum| value of 0.053. This value is by far the highest for excimers and was not sensitive to temperature, solvent, or concentration. The CPL originated from a twisting pyrene excimer, with the (R)‐binaphthyl moieties producing a left‐handed twist excimer, which exhibited (−)‐CPL. The electric and magnetic transition dipole moments are perfectly parallel, which is the best relationship for strong CPL.