Li Hao, Zhai Hongsheng, Zhou Chuanjun, Song Yongbo, Ke Feng, Xu Wen Wu, Zhu Manzhou
Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei 230601, People's Republic of China.
Spectral Measurement and Application of Infrared Material Key Laboratory of Henan Province, School of Physics, Henan Normal University, Xinxiang 453007, People's Republic of China.
J Phys Chem Lett. 2020 Jun 18;11(12):4891-4896. doi: 10.1021/acs.jpclett.0c01358. Epub 2020 Jun 9.
In this work, a new Cu(I) cluster is synthesized and structurally characterized: Cu(TBBT)(PPh) (where TBBT = 4-t-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 (∼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.
