Near-Infrared Photoactive Aza-BODIPY: Thermally Robust and Photostable Photosensitizer and Efficient Electron Donor.

We report herein the synthesis of aza-BODIPY substituted with strongly electron-donating p-(diphenylamino)phenyl substituents (p-Ph N-) at 3,5-positions. The presence of p-Ph N- groups lowers the energy of the singlet excited state (E ) to 1.48 eV and induces NIR absorption with λ at 789 nm in THF.