期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 11, 期 12, 页码 4891-4896出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.0c01358
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资金
- Natural Science Foundation of China [11604083]
- Ministry of Education
- Education Department of Anhui Province
- Natural Science Foundation of Ningbo [2019A610182]
In this work, a new Cu(I) cluster is synthesized and structurally characterized: [Cu-11(TBBT)(9)(PPh3)(6)](SbF6)(2) (where TBBT = 4-tert-butylbenzenethiol). This Cu(I) cluster exhibits good stability and a bright-red emission both in solution (685 nm) and in the solid state (675 nm) with a large Stokes shift (similar to 280 nm) under ambient conditions. Its absolute quantum yield is 0.22 in the solid state. Temperature-dependent emissions and theoretical calculations suggest that the origin of this cluster luminescence mainly results from a mixture of the metal-ligand charge transfer and the cluster-centered triplet excited states. This work not only opens new opportunities for functional applications of copper clusters but also sheds light on the structure-luminescence relationship.
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