BF2‐Complexes of Carbazole–Benzimidazole Conjugates: Synthesis, Structures, and Spectroscopic Properties

摘要

A series of carbazolea??benzimidazole conjugates and corresponding BF2a??complexes (BODIPYs) are synthesized and characterized. Carbazolea??benzimidazole conjugates are synthesized by the condensation of 1a??formyl carbazole and phenylene diamines in good yields. Various substituents are introduced into the benzimidazole moiety and subsequent reaction with BF3a?￠Et2O afforded the BF2a??complexes in moderate to good yield. The structural and photophysical properties of the synthesized fluorophores are investigated with various spectroscopic techniques such as UV/Vis and fluorescence spectroscopy, cyclic voltammetry and Xa??ray crystallography.