Pyrrolopyrrole Aza-BODIPY Analogues as Near-Infrared Chromophores and Fluorophores: Red-Shift Effects of Substituents on Absorption and Emission Spectra

The cover feature shows how the absorption and fluorescence of an aza-BODIPY analogue bearing a diketopyrrolopyrrole moiety can be shifted to the near-infrared region by increasing the numbers of pendant thiophene units or by introducing electron-donating piperidylthiophene substituents. This challenge is likened to a Ninja ' s training of throwing a "Shuriken" further than ever. More details can be found in the Communication by H. Furuta, S. Shimizu, and co-workers (DOI: 10.1002/cplu.201900226).