Synthesis and properties of polyester dendrimers bearing carbazole groups in their periphery

Abstract

Polyester dendrimers bearing carbazole units at their peripheries were synthesized by attaching 3,5-bis[4-(9-carbazolyl)butoxy]benzoic acid to the peripherical phenoxy groups. The phenoxy-terminated polyester dendrimers were synthesized by hydrogenation of the corresponding benzyloxy-terminated polyester dendrimers. The structure of the synthesized compounds was confirmed with IR, 1H NMR, MALDITOF MS and GPC. The reaction conditions for attaching 3,5-bis[4-(9-carbazolyl)butoxy]benzoic acid to the peripherical phenoxy groups of polyester dendrimers were studied. Fluorescence spectra studies showed that there exist strong intramolecular interactions in the carbazole dendrimer molecules.