title: Sapphyrin-nanotube assemblies.
abstract: Single wall carbon nanotubes (SWNTs) bind strongly to sapphyrins, quintessential pentapyrrolic "expanded porphyrin" macrocycles, through donor-acceptor stacking interactions. The specific use of a functionalized sapphyrin diol yields stable water-suspendable nanotubes and also permits the formation of well-defined assemblies in ionic liquids. The absorption and steady-state fluorescence spectra of the resulting noncovalently functionalized nanotube complexes have been analyzed in aqueous media and ionic liquids, yielding a description of the photophysical properties of the nanotube-sapphyrin complexes as donor-acceptor species for light-harvesting.
authors.affiliation: Department of Chemistry and Biochemistry, The University of Texas at Austin, 1 University Station A5300, Austin, Texas 78712, USA.
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Boul
authors.forename: Dong-Gyu
authors.initials: DG
authors.lastname: Cho
authors.forename: G M Aminur
authors.initials: GM
authors.lastname: Rahman
authors.forename: Manuel
authors.initials: M
authors.lastname: Marquez
authors.forename: Zhongping
authors.initials: Z
authors.lastname: Ou
authors.forename: Karl M
authors.initials: KM
authors.lastname: Kadish
authors.forename: Dirk M
authors.initials: DM
authors.lastname: Guldi
authors.forename: Jonathan L
authors.initials: JL
authors.lastname: Sessler
mesh_terms: D004583:Electrons; D005609:Free Radicals; D018625:Microscopy, Atomic Force; D043942:Nanotubes; D010084:Oxidation-Reduction; D011166:Porphyrins / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D013535:Suspensions
chemical_list: D005609:Free Radicals; D011166:Porphyrins; D013535:Suspensions; C440448:sapphyrin