Synthesis and the UV-Vis spectrum characteristics of perylene diimide derivatives

Four perylene diimide derivatives,N,N'- didodecyl- 3,4,9,10- perylene dicarboximide, N,N'- dibutyl- 3,4,9,10- perylene dicarboximide,N,N'- dicyclohexyl- 3,4,9,10- perylene dicarboximide and N,N'- di( phenylmethyl)- 3,4,9,10- perylene dicarboximide were synthesized from 3,4,9,10- perylenetetracarboxylic dianhydride. The UV-Vis absorption spectrums of film of the perylene diimide derivative reveal the imide with flexible chain make the maximum absorption wavelength red-shift,while the imide with rigid chain make the maximum absorption wavelength blue-shift.