Premium
Recent Progress in the Development of Solid‐State Luminescent o ‐Carboranes with Stimuli Responsivity
Author(s) -
Ochi Junki,
Tanaka Kazuo,
Chujo Yoshiki
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201916666
Subject(s) - carborane , luminescence , intramolecular force , quenching (fluorescence) , solid state , boron , photochemistry , excimer , materials science , cluster (spacecraft) , aggregation induced emission , chemistry , fluorescence , optoelectronics , stereochemistry , organic chemistry , physics , computer science , quantum mechanics , programming language
o ‐Carborane, a cluster compound containing boron and adjacent carbon atoms, displays intriguing luminescent properties. Recently, compounds containing o ‐carborane units were found to show suppressed aggregation‐induced quenching and intense solid‐state emission; they also show potential for the development of stimuli‐responsive luminochromic materials. In this Minireview, we introduce three kinds of fundamental photochemical properties: aggregation‐induced emission, twisted intramolecular charge transfer in crystals, and environment‐sensitive excimer formation in solids. Based on these properties, several types of luminochromism, such as thermos‐, vapo‐, and mechanochromism, have been discovered. Based mainly on results from recent studies, we illustrate these mechanisms as well as unique luminescent behaviors of o ‐carborane derivatives.