Coinage metal(i) clusters based on a flexible P,P′(N,N′)2-ligand: colorful phosphorescence, abnormal thermal quenching behavior and anticounterfeiting application

A family of Cu( i ), Ag( i ) and Au( i ) clusters showing a colorful phosphorescence, abnormal thermal quenching behavior and vapor-sensitive luminescence has been designed based on a flexible P,P′(N,N′)-ligand.