Encapsulation of diphenylmethyl phosphonium salts in reverse micelles: Enhanced bimolecular reaction of the photofragments

► Broadband transient femtosecond spectroscopy on bimolecular reactions in reverse micelles. ► Insertion of only one precursor in a w = 4 ACN/AOT/cyclopentane reverse micelle. ► Photodynamics after UV induced bond cleavage of encapsulated diphenylmethyl phosphonium salts. ► Agreement between photofragment dynamics and characteristic band peak shifts. ► Encapsulation slows down the geminate recombination yet increases the yield.