title: Examination of dodecylpyridinium chloride as a potentially selective fluorescence quenching agent for discriminating between alternant versus nonalternant polycyclic aromatic hydrocarbons.
abstract: Fluorescence behavior is reported for 13 alternant and 12 nonalternant polycyclic aromatic hydrocarbons (PAHs) dissolved in aqueous micellar cetyltrimethylammonium chloride (CTAC)+dodecylpyridinium chloride (DDPC) and sodium dodecylsulfate (SDS)+DDPC mixed surfactant solvent media. Experimental measurements indicate that the dodecylpyridinium cation selectively quenches fluorescence emission of alternant PAHs. Emission intensities of nonalternant PAHs, with a few noted exceptions, essentially remain constant, irrespective of both DDPC concentration and cosurfactant headgroup charge.
authors.affiliation: Department of Chemistry, University of North Texas, Denton, Texas 76203-5070, USA.
authors.forename: S
authors.initials: S
authors.lastname: Pandey
authors.forename: L E
authors.initials: LE
authors.lastname: Roy
authors.forename: W E
authors.initials: WE
authors.lastname: Acree
authors.forename: J C
authors.initials: JC
authors.lastname: Fetzer