Azahelicene-Fused BODIPY Analogues Showing Circularly Polarized Luminescence

September 9, 2021

Title

Azahelicene-Fused BODIPY Analogues Showing Circularly Polarized Luminescence

Author

Dr. Chihiro Maeda, Keiji Nagahata, Takuma Shirakawa, Prof. Tadashi Ema

Year

2020

Journal

Angewandte Chemie Volume132, Issue20 May 11, 2020

Abstract

Helical carbazole-based BODIPY analogues were readily synthesized via aza[7]helicenes. The structures of azahelicene-incorporated BF2 dyes were elucidated by x-ray diffraction analysis. DFT calculations revealed that the π-conjugated system expanded from the helicene moiety to the BODIPY framework. The azahelicene-fused boron complexes showed the Cotton effects and the circularly polarized luminescence (CPL) in the visible region. Furthermore, an axially chiral binaphthyl group was attached to the helically chiral dyes, which enhanced the chiroptical properties.

Instrument

CPL-300

Keywords

Circularly Polarized Luminescence