title: Some aspects of room-temperature phosphorescence in liquid solutions.
abstract: Experimental requirements for room-temperature phosphorescence measurements in liquids (RTPL) are discussed. Phosphorescence quantum yields and triplet lifetimes of some brominated naphthalenes and halogenated biphenyls at 77 K in 2-methyltetrahydrofuran and at room temperature in hexane are reported and compared. Surprisingly the naphthalenes show only little loss in quantum yields in going from 77 K to room temperature. Sensitized phosphorescence is discussed as a means of expanding the analytical potential of RTPL. Results with a model system of benzophenone as a donor (analyte) and 1,4-dibromonaphthalene as an acceptor are presented.
authors.affiliation: Department of General and Analytical Chemistry of the Free University, de Boelelaan 1083, 1081 HV Amsterdam, The Netherlands.
authors.forename: J J
authors.initials: JJ
authors.lastname: Donkerbroek
authors.forename: J J
authors.initials: JJ
authors.lastname: Elzas
authors.forename: C
authors.initials: C
authors.lastname: Gooijer
authors.forename: R W
authors.initials: RW
authors.lastname: Frei
authors.forename: N H
authors.initials: NH
authors.lastname: Velthorst