title: Ruthenium(II) trisbipyridine functionalized gold nanorods. Morphological changes and excited-state interactions.
abstract: Gold nanorods synthesized using cetyltrimethylammonium bromide and tetraoctylammonium bromide as stabilizers are functionalized with a thiol derivative of ruthenium(II) trisbipyridyl complex [(Ru(bpy)3(2+)-C5-SH] in dodecanethiol using a place-exchange reaction. The changes in the plasmon absorption bands and transmission electron micrographs indicate significant changes in the gold rod morphology during the place-exchange reaction. The (Ru(bpy)(3)2+-C5-SH in its excited state undergoes quick deactivation when bound to gold nanorods. More than 60% of the emission was quenched when [(Ru(bpy)3(2+)-C5-SH] was bound to gold nanorods. Emission decay analysis indicates that the energy transfer rate constant is greater than 10(10) s(-1).
authors.affiliation: Radiation Laboratory, Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556-0579, USA.
authors.forename: Meghan
authors.initials: M
authors.lastname: Jebb
authors.forename: P K
authors.initials: PK
authors.lastname: Sudeep
authors.forename: P
authors.initials: P
authors.lastname: Pramod
authors.forename: K George
authors.initials: KG
authors.lastname: Thomas
authors.forename: Prashant V
authors.initials: PV
authors.lastname: Kamat