Kinetic analysis of photoreversible photochromic systems under continuous monochromatic irradiation from abs. vs time curves

Photoreversible photochromic systems can be analysed quantitatively even if the photoisomers have not been isolated. Quantum yields of photocoloration and photodecoloration and UV / visible spectre of each photoisomer can be extracted simultaneously by numerical simulation and fitting of Abs(lambda) vs time curves recorded under continuous monochromatic irradiation at sele cted wavelengths.