Elucidating the Excited State of Mechanoluminescence in Organic Luminogens with Room‐Temperature Phosphorescence
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- 5 October 2017
- journal article
- research article
- Published by Wiley in Angewandte Chemie
- Vol. 56 (48), 15299-15303
- https://doi.org/10.1002/anie.201708119
Abstract
Two stable, purely organic luminogens exhibit both mechano‐ (ML) and photoluminescence (PL) with dual fluorescence–phosphorescence emissions at room temperature. Careful analysis of the crystal structures, coupled with theoretical calculations, demonstrate that room‐temperature phosphorescence and ML properties are strongly related to molecular packing. In particular, the formation and fracture of molecular dimers with intermolecular charge‐transfer properties has a significant effect on intersystem crossing, as well as excited triplet state emissions, in both PL and ML processes.Keywords
Funding Information
- the National Science Foundation of China (21325416 and 51573140)
- the Open Project of State Key Laboratory of Supramolecular Structure and Materials (sklssm201715)
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