2015 年 57 巻 2 号 p. 110-115
Recent developments of luminescent copper(I) complexes are remarkable and some copper(I) complexes exhibit interesting chromic behaviors of luminescence in response to outer stimuli such as temperature, vapor, and mechanical force. In this article, recent progress of luminescent chromic copper(I) complexes is introduced. Tetranuclear copper(I) clusters with the cubanetype [Cu4I4] core present good examples of luminescence thermochromism, vapochromism, and mechanochromism. In addition, some unique chromic systems are found recently: A dinuclear copper(I) complex, [Cu2(μ-I)2(dmso)2(PPh3)2](dmso = dimethyl sulfoxide) exhibits unique photochromic luminescence on the basis of the flip and release of dmso. Highly luminescent mononuclear copper(I) complexes with ternary ligand systems, [CuI(PPh3)2(L)](L = N-heteroaromatic compounds) are generated by the mechanical grinding.