title: On the photophysical properties of new luminol derivatives and their synthetic phthalimide precursors.
abstract: The photophysical properties of a series of structurally related 4-aminophthalimides and the corresponding 5-aminophthalic hydrazides (luminols) are reported. Absorption, steady-state, and time-resolved fluorescence spectra of luminols exhibited substitution, solvent, and pH dependence. Singlet lifetimes have been determined by time-resolved laser flash spectroscopy. UV spectra in gas phase and DMSO solution were calculated by TD-DFT which revealed the existence of two low-energy excited singlet states with strong pH-sensitivity.
authors.affiliation: Department of Chemistry, University of Cologne, Greinstr. 4, 50939 Köln, Germany.
authors.forename: Raúl
authors.initials: R
authors.lastname: Pérez-Ruiz
authors.forename: Robert
authors.initials: R
authors.lastname: Fichtler
authors.forename: Yrene
authors.initials: Y
authors.lastname: Diaz Miara
authors.forename: Matthieu
authors.initials: M
authors.lastname: Nicoul
authors.forename: Dominik
authors.initials: D
authors.lastname: Schaniel
authors.forename: Helfried
authors.initials: H
authors.lastname: Neumann
authors.forename: Matthias
authors.initials: M
authors.lastname: Beller
authors.forename: Dirk
authors.initials: D
authors.lastname: Blunk
authors.forename: Axel G
authors.initials: AG
authors.lastname: Griesbeck
authors.forename: Axel
authors.initials: A
authors.lastname: Jacobi von Wangelin