Syntheses of uncharged, positively and negatively charged 3,4,9,10-perylene-bis(dicarboximides)

The preparation of various 3,4,9,10-perylene-bis(dicarboximides) bearing uncharged, negatively and positively charged substituents on the imide group is described. The absorption and fluorescence bands are not influenced by the type of substituent, but in contrast, the fluorescence quantum yields of the compounds are different.