Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 59, Issue 25, Pages 10018-10022Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202000655
Keywords
aggregation-induced emission; clustering-triggered emission; persistent room-temperature phosphorescence; through-space conjugation; tunable afterglow
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Funding
- National Natural Science Foundation of China [51822303]
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Nonaromatic, cross-conjugated, and highly twisted luminogens consisting of acylated succinimides demonstrate aggregation-induced emission characteristics along with tunable multicolor photoluminescence and afterglows in their single crystals. Effective through-space conjugation among different moieties bearing n/pi electrons promote the spin-orbit coupling and intersystem crossing and lead to diverse emissive clusters with concurrently rigidified conformations, thus allowing readily tunable emissions. Derived from it, the proof-of-concept application for advanced anti-counterfeiting is illustrated. These results should spur the rational design of novel nonaromatic AIEgens, and moreover advance understandings of the non-traditional intrinsic luminescence and the origin of tunable multicolor afterglows.
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