Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 9, Issue 31, Pages 10029-10036Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1tc02301b
Keywords
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Funding
- NNSF of China [21961013, 41867053]
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The Hf(OTf)(4)-catalyzed three-component reaction produced a library of 23 pyrimido[2,1-b][1,3]benzothiazole (PBT)-based AIEgens with full-color tunability, solid-state fluorescence quantum yields of up to 86.8%, and high crystallizability. Experimental and theoretical analyses demonstrated that PBT AIEgens dissipate energy through the rotation of the exocyclic carbonyl (ester/ketone) rather than the commonly known phenyl group, providing insights into their unique structure-property relationships and AIE mechanism.
The Hf(OTf)(4)-catalyzed three-component reaction (3CR) was employed as a powerful tool for facile access to a library of 23 pyrimido[2,1-b][1,3]benzothiazole (PBT)-based AIEgens with full-color tunability, solid-state fluorescence quantum yields of up to 86.8%, and high crystallizability. As atypical propeller-shaped molecules, PBT AIEgens were experimentally determined to dissipate the energy of the excited state via the rotation of the exocyclic carbonyl (ester/ketone) rather than the commonly known phenyl group. Theoretical calculations and crystallographic analysis of PBT AIEgens provide insights into their unique structure-property relationships and AIE mechanism from orbital and molecular aspects, respectively.
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