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Front Cover: Near‐Infrared Circularly Polarized Luminescence through Intramolecular Excimer Formation of Oligo( p ‐phenyleneethynylene)‐Based Double Helicates (Chem. Eur. J. 39/2019)
Author(s) -
Miki Koji,
Noda Takeru,
Gon Masayuki,
Tanaka Kazuo,
Chujo Yoshiki,
Mizuhata Yoshiyuki,
Tokitoh Norihiro,
Ohe Kouichi
Publication year - 2019
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201902252
Subject(s) - intramolecular force , luminescence , excimer , stereochemistry , chemistry , crystallography , materials science , photochemistry , optoelectronics , optics , fluorescence , physics
Carbon‐based double helicates consisting of oligo( p ‐phenyleneethynylene)s and “flexible” 2,2’‐binaphthyls or “rigid” 9,9′‐spirobifluorenes were synthesized. The “rigid” double helicate acts as a bright macrocyclic fluorophore. The “flexible” double helicate forms a tightly interlocked intramolecular excimer under photoirradiation, emitting near‐infrared circularly polarized luminescence with high dissymmetry factor value. More information can be found in the Full Paper by K. Miki, K. Ohe, et al. on page 9211.