title: Chemically modified dansyl probes: a fluorescent diagnostic for ion and proton detection in solution and in polymers.
abstract: [reaction: see text] 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 (i.e., Zn(2+)) 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 well as an optical reporter for the glass transition temperature.
authors.affiliation: Department of Chemistry, University of California, Irvine, California 92717, USA.
authors.forename: Naphtali A
authors.initials: NA
authors.lastname: O'Connor
authors.forename: Steven T
authors.initials: ST
authors.lastname: Sakata
authors.forename: Huide
authors.initials: H
authors.lastname: Zhu
authors.forename: Kenneth J
authors.initials: KJ
authors.lastname: Shea