Synthesis, Aggregation-Induced Emission and Circularly Polarized Luminescence of Poly(3, 3'-bicarbazolylterephthalonitrile) with Chiral Binaphthalene Pendant Groups

A couple of conjugated polymers (R)-P1 and (S)-P1 were synthesized using chiral Binaphthalene (BINOL) substituted 2, 3-tetrafluoroterephthalonitrile and 3, 3'-bicarbazole as the monomers via C-N coupling reaction. The chemical structures and properties of the polymers were characterized with ¹H NMR, ¹³C NMR, gel permeation chromatography (GPC), thermogravimetric analysis (TGA) as well as PL spectra, circular dichroism(CD) and circularly polarized luminescence (CPL) spectra. The experimental results suggested that the obtained polymers were aggregation-induced emission (AIE) and CPL active, manifesting the chirality transmission from 1, 1'-binaphthalenependant groups to the conjugated main chain.