Treatment of a dihydrodipyrrin ligand with Bu2BOTf or BF3●OEt2 in CH2Cl2/Et3N at room temperature readily gave complexes that absorb in the blue region (λabs ~400 nm) and fluoresce (λem ~500–550 nm) with large Stokes shift (~100–150 nm), almost no absorption-fluorescence spectral overlap, and high fluorescence quantum yield (Φf ~0.4–0.9). The photophysical properties – resembling aminocoumarins rather than parent dipyrrinatoboron complexes – may support broad-band photosensitization upon violet-laser excitation (405 nm) and microscopy applications where a large Stokes shift is required.

BODIPYs in the blue: New molecular design

2019 Fall National Meeting

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.