Luminescent silver(i) coordination architectures containing 2-aminopyrimidyl ligands

Abstract

The design and assembly of new coordination architectures is nowadays a challenging research field that attracts increasing attention due to the unique structural and functional properties of such metal–organic materials. The selection of suitable organic ligands as building blocks is one of the most important points for the construction of novel coordination architectures with fascinating structures and functions. In contrast to the recognized use of some N heterocyclic ligands for the construction of coordination architectures, 2-aminopyrimidine (NH₂pym) and its related derivatives are simple, commercially available, soluble and highly versatile angular building blocks, but still underdeveloped until now. Given the high potential of this kind of ligands for future developments in this research field, the present highlight will review the coordination-driven assembly of 2-aminopyrimidyl building blocks with or without auxiliary ligands with closed-shell d¹⁰ Ag(I) ions as well as their luminescence properties. Multiplicity of the established structural motifs thus far (only considering the coordination interaction) is outlined, illustrating the broad range of coordination motifs from 0D discrete molecular architectures to infinite extended one-, two-, and three-dimensional (1-D, 2-D, and 3-D) networks. The specific influencing factors such as anion, auxiliary ligand, substituent, and solvent on structural assemblies and the fluorescence of these crystalline solids are also discussed.