title: Altering the emission behavior with the turn of a thiophene ring: the photophysics of condensed ring systems of alternating benzenes and thiophenes.
abstract: Six aromatic compounds with embedded thiophenes differing in the number of rings (2-5) and thiophene orientation along the long axis of the molecule (syn, anti) were investigated. Photophysical properties, steady-state absorption, fluorescence, phosphorescence, lifetimes, quantum yields, and a comprehensive time-resolved spectroscopic analysis (femtosecond and nanosecond transient absorption spectroscopy) have been studied as a function of molecular structure.
authors.affiliation: Center for Photochemical Sciences, Bowling Green State University, Bowling Green, OH 43403, USA.
authors.forename: Brigitte
authors.initials: B
authors.lastname: Wex
authors.forename: Bilal R
authors.initials: BR
authors.lastname: Kaafarani
authors.forename: Evgeny O
authors.initials: EO
authors.lastname: Danilov
authors.forename: Douglas C
authors.initials: DC
authors.lastname: Neckers