This book included, mechanistic investigations of copper(I)- catalyzed alkyne–azide cycloaddition reactions, “click-triazole” coordination chemistry : exploiting 1,4-disubstituted-1,2,3-triazoles as ligands, flood : binding anions in rigid and reconfigurable triazole receptors, click triazoles as chemosensors, triazole-based polymer gels, click triazoles for bioconjugation, and recent developments in the synthesis 1,4,5-trisubstituted triazoles.