Definition:

Boron dipyrromethenes (BODIPYs) are highly fluorescent dyes of attractive photophysical properties. BODIPYs has following features:  sharp absorption and fluorescence in the visible and near-infrared region, large absorption coefficients, high fluorescence quantum yields, and reasonably long singlet state lifetimes, easy to synthesize, photostability, relative insensitivity to environmental perturbations such as solvent and pH.