New Journal of Chemistry p. 8910 - 8917 (2021)
Update date:2022-07-29
Topics:
Luo, Chen-Lin
Hu, Chu-Xing
Shang, Ping
Wen, Guan-Zhao
Zhu, Jia-Jun
Xuan, Ya-Hui
Xia, Bang-Lian
Liu, Yu-Chen
Jiang, Zi-Hao
Dong, Geng
Zhang, Wei
Gui, Liu-Cheng
Jiang, Xuan-Feng
Heteroleptic copper(i)-phosphine complexes have attracted considerable attention because of their diverse structures, and photophysical and catalytic properties. In this work, a series of heteroleptic diimine-diphosphine Cu(i) complexes (C1-C10) were synthesized quantitively using the designed bipyridine (L1-L4) and bidentate polyphosphine (L5-L8) as functional ligands. These mixed ligand-copper(i) complexes were fully characterized by 1H and 13C NMR spectroscopy, electrospray ionization mass spectrometry (ESI-MS) and elemental analysis. The detailed structures of complexes C1, C2, C5, C6, C9 and C10 were confirmed by single-crystal X-ray diffraction analysis. Moreover, these phosphine-Cu(i) complexes exhibited intense emissions either in the solid state or in solution under UV light excitation. The emissive complexes C1-C4 displayed highly sensitive luminescence sensing towards silver ions in a quenching fashion (turn-off). Furthermore, all the phosphine-protected copper(i) complexes exhibited high catalytic activity towards azide-alkyne cycloaddition (CuAAC) in water.
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