title: Self-assembly of luminescent N-annulated perylene tetraesters into fluid columnar phases.
abstract: A new class of N-annulated perylene tetraesters and their N-alkylated derivatives has been synthesized. N-Annulated perylene tetraesters stabilize a hexagonal columnar phase over a broad temperature range. The hexagonal columnar phase exhibited by these compounds shows good homeotropic alignment with few defects. Annulation in the bay region of the perylene tetraesters enhanced the width of the mesophase compared with the parent tetraesters. N-Alkylation of these compounds perturbed the self-assembly behaviour and the resulting compounds were non-mesomorphic. A bright green luminescence was visible under long wavelength UV light. These properties suggest that these materials may have promising applications in organic electronics.
authors: Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India. achalkumar@iitg.ernet.in achalkumar78@gmail.com.
authors: Ravindra Kumar
authors: RK
authors: Gupta
authors: Suraj Kumar
authors: SK
authors: Pathak
authors: Balaram
authors: B
authors: Pradhan
authors: D S
authors: DS
authors: Shankar Rao
authors: S
authors: S
authors: Krishna Prasad
authors: Ammathnadu S
authors: AS
authors: Achalkumar