Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 59, Issue 39, Pages 17207-17213Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202004947
Keywords
alkynyl; homocoupling reactions; perovskites; self-assembly; UV-induced reactions
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Funding
- Major Research Program Cultivation Project of National Science Foundation of China [91956107]
- National Science Foundation of China [31371187]
- Start-Up Grant of Nanjing Tech University
- Postgraduate Research & Practice Innovation Program of Jiangsu Province [KYCX18 1487]
- Opening Research Funds Projects of the State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University [2020-36]
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Herein, we report the facile growth of three-dimensional CsPbBr(3)perovskite supercrystals (PSCs) self-assembled from individual CsPbBr(3)perovskite quantum dots (PQDs). By varying the carbon chain length of a surface-bound ligand molecule, 1-alkynyl acid, different morphologies of PSCs were obtained accompanied by an over 1000-fold photoluminescence improvement compared with that of PQDs. Systematic analyses have shown, for the first time, that under UV irradiation, CsBr, the byproduct formed during PQDs synthesis, could effectively catalyze the homocoupling reaction between two alkynyl groups, which further worked as a driving force to push forward the self-assembly of PQDs.
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