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A Pivotal Biaryl Rotamer Bearing Two Floppy Pyrenes that Exhibits Cryptochiral Characteristics in the Ground State
Author(s) -
Hara Nobuyuki,
Yanai Masaki,
Kaji Daiki,
Shizuma Motohiro,
Tajima Nobuo,
Fujiki Michiya,
Imai Yoshitane
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201801770
Subject(s) - luminophore , conformational isomerism , pyrene , ground state , circular dichroism , chemistry , crystallography , stereochemistry , materials science , optoelectronics , molecule , physics , luminescence , atomic physics , organic chemistry
Optically active luminophores capable of emitting circularly polarized light (CPL) are keys in many photonic communication systems. Herein, we report a new cryptochiral CPL‐functioned molecular system composed of a C 2 ‐symmetric 5,5’,6,6’,7,7’,8,8’‐octahydro‐1,1’‐bi‐2‐naphthyl rotamer bearing two flexible linkers attached to two pyrene rings as emitters. Despite exhibiting negligibly weak circular‐dichroism (CD) signals in the ground state, the luminophore displayed a clear CPL signal in the photoexcited state.