New imides based on perylene and siloxane derivatives

摘要

Di- and poly- imides containing perylene and siioxane moieties have been prepared by reaction of 3,4,9,10-perylenetetracarboxylic dianhydride with an excess of α,ω-bis(aminopropyl)di- and oligo-dimethylsiloxanes, that differ by siioxane sequence length in quinoline, as a solvent. The product solubility increases with the siioxane segment length. When 3,4,9,10-perylenetetracarboxylic dianhydride:siloxane derivative molar ratio was 1:1, polyimides were formed. By partial replacement of 3,4,9,10-perylenete-tracarboxylic dianhydride with 4,4'-(hexafluoroisopropylidene)diphthalic anhydride, the solubility of the resulting polyimide was improved. All structures were verified by proton nuclear magnetic resonance and infrared spectroscopy. The surface topography of the products processed as films was investigated by Atomic Force Microscopy. The photophysical properties in correlation with the structure were studied.