准分子
激发态
发光
手性(物理)
光化学
化学
荧光
位阻效应
材料科学
立体化学
光学
光电子学
原子物理学
物理
夸克
量子力学
手征对称破缺
Nambu–Jona Lasinio模型
作者
Kazuto Takaishi,Sho Murakami,Kazuhiro Iwachido,Tadashi Ema
出处
期刊:Chemical Science
[The Royal Society of Chemistry]
日期:2021-01-01
卷期号:12 (43): 14570-14576
被引量:19
摘要
A series of axially chiral binaphthyls and quaternaphthyls possessing two kinds of aromatic fluorophores, such as pyrenyl, perylenyl, and 4-(dimethylamino)phenyl groups, arranged alternately were synthesized by a divergent method. In the excited state, the fluorophores selectively formed a unidirectionally twisted exciplex (excited heterodimer) by a cumulative steric effect and exhibited circularly polarized luminescence (CPL). They are the first examples of a monomolecular exciplex CPL dye. This versatile method for producing exciplex CPL dyes also improved fluorescence intensity, and the CPL properties were not very sensitive to the solvent or to the temperature owing to the conformationally rigid exciplex. This systematic study allowed us to confirm that the excimer chirality rule can be applied to the exciplex dyes: left- and right-handed exciplexes with a twist angle of less than 90° exhibit (-)- and (+)-CPL, respectively.
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