'Click'synthesis of starburst triphenylamine as potential emitting material

摘要

The efficient synthesis of a starburst triphenylamine,tris(4-(1-(4-(diphenylamino)phenyl)-1H-1,2,3-tri-azol-4-yl)phenyl)amine,via straightforward'click coupling'of 4-azido-N,N-diphenylbenzenamine and tris(4-ethynylphenyl)amine is reported.The reaction was performed in THF using(PPh3)CuBr as catalyst and was accomplished within 6 h in high yield(92%).Both the synthesis and purification steps were greatly simplified in comparison with conventional methods.The optical,electrochemical,and thermal properties of the starburst triphenylamine were examined;the synthesized compound emitted deep blue fluorescence in both solution and the solid state and displayed reversible redox processes.The starburst triphenylamine is a potential hole-transporting material and blue-light-emitting material.