β-Isoindigo-azaDIPYs: Fully Conjugated Hybrid Systems with Broad Absorption in the Visible Region

A one-step synthetic pathway for the preparation of fully conjugated beta-isoindigo-azaDIPY hybrid chromophores comprised of beta-isoindigo and azadipyrromethene moieties is reported. The target compounds were characterized by spectroscopic, crystallographic, and theoretical methods and show unprecedented broad absorption across the visible region of the electromagnetic spectrum. The X-ray crystal structure of the octa(n-butyl)-beta-isoindigo-azaDIPY derivative revealed that a trans-configuration of the beta-isoindigo fragment accompanies a planar conjugated core.

Automated summary

The newly synthesized compounds exhibit broad absorption in the visible region of the electromagnetic spectrum and have a stable structure. The beta-isoindigo fragment is in a trans-configuration accompanying a planar conjugated core.