Xiao-Jing Zhang, Meng-En Sun, Fang Sun, Yan Jin, Xi-Yan Dong, Si Li, Hai-Yang Li, Gaosong Chen, Yongping Fu, Yonggang Wang, Qing Tang, Yuchen Wu, Lei Jiang, Shuang-Quan Zang
The dual emission (DE) characteristics of atomically precise copper nanoclusters (Cu NCs) are of significant theoretical and practical interest. Despite this, the underlying mechanism driving DE in Cu NCs remains elusive, primarily due to the complexities of excited state processes. Herein, a novel [Cu4(PPh3)4(C≡C-p-NH2C6H4)3]PF6 (Cu4) NC, shielded by alkynyl and exhibiting DE, was synthesized. Hydrostatic pressure was applied to Cu4, for the first time, to investigate the mechanism of DE. With increasing pressure, the higher-energy emission peak of Cu4 gradually disappeared, leaving the lower-energy emission peak as the dominant emission...
May 1, 2024: Angewandte Chemie