title: Tuning light absorption in pyrene: synthesis and substitution effects of regioisomeric donor-acceptor chromophores.
abstract: Three isomeric donor-acceptor (DA) chromophores based on pyrene were synthesized to study the effects of substitution pattern on intramolecular charge-transfer absorption through pyrene. These chromophores are nonfluorescent and absorb light in the long-wavelength region approaching 700 nm, making them promising light-harvesters. Their optical properties depend greatly on the substitution pattern of the donor, but their electrochemical properties are relatively unaffected.
authors.affiliation: Department of Chemistry, University of Calgary , 2500 University Drive NW, T2N 1N4 Calgary, Canada.
authors.forename: Samantha N
authors.initials: SN
authors.lastname: Keller
authors.forename: Nicole L
authors.initials: NL
authors.lastname: Veltri
authors.forename: Todd C
authors.initials: TC
authors.lastname: Sutherland