The interesting luminescence behavior and rare nonlinear optical properties of the {Ag 55 Mo 6 } nanocluster.

The remarkably reversible thermochromic luminescence behavior and the rare nonlinear optical (NLO) properties of the [Ag 55 (MoO 4 ) 6 (C[triple bond, length as m-dash]C t Bu) 24 (CH 3 COO) 18 (CH 3 COO)]·2H 2 O ({Ag 55 Mo 6 } for short) nanocluster reported were investigated experimentally. The important contributions of Ag + , C[triple bond, length as m-dash]C - ions and MoO 4 2- groups to the NLO properties were proved by further density functional theory (DFT) calculations.