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Towards NIR‐Active Hydroxybenzazole (HBX)‐Based ESIPT Motifs: A Recent Research Trend
Author(s) -
Mishra Virendra R.,
Ghanavatkar Chaitannya W.,
Sekar Nagaiyan
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201904558
Subject(s) - oxazole , thiazole , imidazole , ring (chemistry) , aggregation induced emission , hbx , combinatorial chemistry , chemistry , nanotechnology , materials science , stereochemistry , fluorescence , organic chemistry , physics , optics , transfection , biochemistry , gene
In this review, we have explored the synthetic strategies adopted for designing the hydroxybenzazoles (imidazole, oxazole, and thiazole) i. e. HBX derivatives which show emission in red and NIR region. Further, we have examined the effect of different substituents i. e. either directly attached or with extended conjugation on a phenolic ring/ phenyl ring of heterocycles to achieve a red to NIR shift in emission. Finally, we have investigated the applications and computational methodologies adopted for red to NIR emitting dyes. In the future, this review will help to design, synthesized and examine the applications of new derivatives of HBX which will show emission in red to NIR region.