Synthesis and Characterization of Novel Benzoperylene and Coronene Derivatives

Novel “swallow tail” N-substituted benzo[ghi]perylene monoimides (BPI) and coronene diimides (COI) have been efficiently synthesized via Diels-Alder reaction. UV–vis spectra of BPI and COI show the representative absorption bands from 300 to 500 nm, and have obviously blue shifted absorption compared to that of PET. The analysis of DSC and POM revealed the existence of hexagonal columnar of PET and COI. With “swallow tail” alkyl chains, BPI have lower melt points and COI have lower liquid crystal region.