title: Light harvesting in microscale metal-organic frameworks by energy migration and interfacial electron transfer quenching.
abstract: Microscale metal-organic frameworks (MOFs) were synthesized from photoactive Ru(II)-bpy building blocks with strong visible light absorption and long-lived triplet metal-to-ligand charge transfer ((3)MLCT) excited states. These MOFs underwent efficient luminescence quenching in the presence of either oxidative or reductive quenchers. Up to 98% emission quenching was achieved with either an oxidative quencher (1,4-benzoquinone) or a reductive quencher (N,N,N',N'-tetramethylbenzidine), as a result of rapid energy migration over several hundred nanometers followed by efficient electron transfer quenching at the MOF/solution interface. The photoactive MOFs act as an excellent light-harvesting system by combining intraframework energy migration and interfacial electron transfer quenching.
authors.affiliation: Department of Chemistry, CB#3290, University of North Carolina, Chapel Hill, North Carolina 27599, USA.
authors.forename: Caleb A
authors.initials: CA
authors.lastname: Kent
authors.forename: Demin
authors.initials: D
authors.lastname: Liu
authors.forename: Liqing
authors.initials: L
authors.lastname: Ma
authors.forename: John M
authors.initials: JM
authors.lastname: Papanikolas
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Meyer
authors.forename: Wenbin
authors.initials: W
authors.lastname: Lin