Aggregation‐Induced Circularly Polarized Luminescence from Boron Complexes with a Carbazolyl Schiff Base.

Maeda, Chihiro; Nomoto, Shuichi; Takaishi, Kazuto; Ema, Tadashi

A variety of carbazolyl‐appended Schiff bases were readily synthesized from 1‐formylcarbazoles and aniline derivatives. Boron complexation of the resulting ligands allowed for facile preparation of new carbazole‐based BODIPY analogues showing solid‐state fluorescence. Furthermore, some dyes were converted into chiral compounds through the Et2AlCl‐mediated incorporation of a binaphthyl unit. The chiral dyes showed aggregation‐induced fluorescence and circularly polarized luminescence (CPL) with the ΦF and glum of up to 0.22 and −3.5×10−3, respectively, in the solid state. The solid‐state fluorescence and CPL were well characterized by the crystal packing analyses and DFT calculations.

SCHIFF bases; LUMINESCENCE; BORON; ANILINE derivatives; FLUORESCENCE

Chemistry - A European Journal, 2020, Vol 26, Issue 57, p13016

0947-6539

Academic Journal

10.1002/chem.202001463