Modulating the luminescent performances on blue-emitting coordination polymers via tuning the end-solvent molecules

In this paper, a series of coordination polymers, {[Zn(adb)(L1) 2 ]·solvent} n (L1 = solvent = N , N -dimethylacetamide, Hui-3-DMA ; L1 = N , N -dimethylformamide and no solvent, Hui-3-DMF ; L1 = N , N -diethylformamide and no solvent, Hui-3-DEF ) have been synthesized by hydrothermal reactions of Zn(NO 3 ) 3 ·6H 2 O and 4,4′-(anthracene-9,10-diyl)dibenzoic acid (H 2 adb). These compounds show similar one-dimensional (1D) zig-zag chain structures, which are limited by the end-coordination of the solvent molecules. Interestingly, these compounds all show blue-emission properties, which could be easily modulated by using different solvents. Among them, Hui-3-DMA presents an excellent quantum yield performance, as high as to 54.1%, which is very promising for blue-emission materials. Moreover, various-temperature fluorescence studies reveal good linear or exponential decline trends for their emission intensity as temperature increases, demonstrating the potential of these compounds as fluorescent thermometers.