NDLI: T-Shaped donor–acceptor–donor type tetraphenylethylene substituted quinoxaline derivatives: aggregation-induced emission and mechanochromism

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T-Shaped donor–acceptor–donor type tetraphenylethylene substituted quinoxaline derivatives: aggregation-induced emission and mechanochromism

Content Provider	Semantic Scholar
Author	Ekbote, Anupama Jadhav, Thaksen Misra, Rajneesh
Copyright Year	2017
Abstract	Smart mechanofluorochromic materials are of great importance owing to their wide range of applications and have been effectively synthesized by incorporating aggregation-induced emission (AIE) active luminogens. In this contribution, we have synthesized two novel T-shaped D–A–D type luminophores, tetraphenylethylene (TPE) substituted acenapthene-quinoxaline 1 and TPE substituted phenanthrene quinoxaline 2, by the Suzuki cross-coupling reaction. Their solavatochromism, AIE and mechanochromism were evaluated. The D–A–D structured luminophores 1 and 2 show solvent-dependent intramolecular charge transfer (ICT) transitions, which were explored using solvatochromism, and also exhibit strong AIE behaviour. Luminophores 1 and 2 show highly reversible mechanochromism with a good colour contrast, which was further studied using photophysical properties, powder X-ray diffraction and theoretical calculations. The powder XRD study reveals a morphological change from crystalline to amorphous, which is responsible for mechanochromism.
Starting Page	9346
Ending Page	9353
Page Count	8
File Format	PDF HTM / HTML
DOI	10.1039/C7NJ01531C
Volume Number	41
Alternate Webpage(s)	http://www.rsc.org/suppdata/c7/nj/c7nj01531c/c7nj01531c1.pdf
Alternate Webpage(s)	https://doi.org/10.1039/C7NJ01531C
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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