Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 61, Issue 45, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202211628
Keywords
Cyanurate Ligand; Interfacial Structure; Silver Nanocluster; Thermally Activated Delayed Fluorescence; In-Situ Ligand Formation
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Funding
- Natural Science Foundation of China [22001139, 22171164, 91961105]
- Natural Science Foundation of Shandong Province [ZR2019BB058, ZR2020ZD35, ZR2019ZD45]
- Taishan Scholar Project of Shandong Province of China [tsqn201812003, ts20190908]
- Fok Ying Tong Education Foundation [171009]
- National Postdoctoral Innovative Talents Support Program [BX2021171]
- China Postdoctoral Science Foundation [2021M700081]
- Science, Education and Industry Integration Pilot Project Program of Qilu University of Technology (Shandong Academy of Science) [2022PY066]
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The composition of protection monolayer greatly affects the molecular and electronic structures of atomically precise monolayer protected metal nanoclusters. In this study, four isostructural Ag/cyanurate/phosphine metallamacrocyclic monolayer protected Ag-22 nanoclusters were synthesized, which exhibit unprecedented interfacial bonding structure and thermally activated delayed fluorescence.
The composition of protection monolayer exerts great influence on the molecular and electronic structures of atomically precise monolayer protected metal nanoclusters. Four isostructural Ag/cyanurate/phosphine metallamacrocyclic monolayer protected Ag-22 nanoclusters are synthesized by kinetically controlled in-situ ligand formation-driven strategy. These eight-electron superatomic silver nanoclusters feature an unprecedented interfacial bonding structure with diverse E-Ag (E=O/N/P/Ag) interactions between the Ag-13 core and metallamacrocyclic monolayer, and displays thermally activated delayed fluorescence (TADF), benefiting from their distinct donor-acceptor type electronic structures. This work not only unmasks a new core-shell interface involving cyanurate ligand but also underlines the significance of high-electron-affinity N-heterocyclic ligand in synthesizing TADF metal nanoclusters. This is the first mixed valence Ag-0/I nanocluster with TADF characteristic.
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