The fluorescence emission intensity of the dansyl group is significantly diminished upon appending an ethyldimethylamino group to the N1 nitrogen substituent. Addition of acids and metal ions (ie, Zn2+) to solutions of trimethylethylenediamine naphthalene sulfonamide (trinsyl) 2 produces a> 25-fold increase in fluorescence intensity. Trinsyl probe 2 has been used as a diagnostic for the diffusion of protons and metal ions in a network polymer as ...
