期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 59, 期 29, 页码 11898-11902出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202004268
关键词
atomic precision; cluster compounds; luminescence; photoluminescence; silver
资金
- National Science Fund for Distinguished Young Scholars [21825106]
- National Natural Science Foundation of China [21975065, 21671175]
- Program for Science & Technology Innovation Talents in Universities of Henan Province [164100510005]
- Program for Innovative Research Teams (in Science and Technology) in Universities of Henan Province [19IRTSTHN022]
Luminescent metal clusters show promise for applications in imaging and sensing. However, promoting emission from metal clusters at room temperature is a challenging task owing to the lack of an efficient approach to suppress the nonradiative decay process in metal cores. We report herein that the addition of a silver atom into a metal interstice of the radarlike thiolated silver cluster [Ag-27((SBu)-Bu-t)(14)(S)(2)(CF3COO)(9)(DMAc)(4)].DMAc (NC1, DMAc=dimethylacetamide), which is non-emissive under ambient conditions, produced another silver cluster [Ag-28(AdmS)(14)(S)(2)(CF3COO)(10)(H2O)(4)] (NC2) that displayed bright green room-temperature photoluminescence aided by the new ligand 1-adamantanethiol (AdmSH). The 28th Ag atom, which hardly affects the geometrical and electronic structures of the Ag-S skeleton, triggered the emission of green light as a result of the rigidity of the cluster structure.
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