title: Fluorophore(s) appended fullerene dyads and triads for probing photoinduced energy transfer: syntheses, electronic structure, and fluorescence studies.
abstract: Fullerene, C(60) was functionalized to possess one or two fluorophore entities. The fluorophore-fullerene dyads thus synthesized contain either a naphthalene, pyrene, or fluorene entity while the triads contain either a pyrene or fluorene entity in addition to a naphthalene entity. The redox behavior of these dyads and triads were probed by cyclic voltammetric technique, while the geometry and electronic structures were deduced from ab initio B3LYP/3-21G(*) method. Steady-state emission studies revealed the occurrence of energy transfer from the singlet excited fluorophore to the fullerene entity in the case of the dyads while the occurrence of step-by-step sequential energy transfer is envisioned in the case of the triads. A better 'antenna-effect' owing to the extended range of excitation wavelength to induce energy transfer to the appended fullerene has been achieved in the case of the triads.
authors.affiliation: Department of Chemistry, Wichita State University, 1845 Fairmount, Wichita, KS 67260-0051, USA.
authors.forename: Gollapalli R
authors.initials: GR
authors.lastname: Deviprasad
authors.forename: Phillip M
authors.initials: PM
authors.lastname: Smith
authors.forename: Melvin E
authors.initials: ME
authors.lastname: Zandler
authors.forename: Lisa M
authors.initials: LM
authors.lastname: Rogers
authors.forename: Francis
authors.initials: F
authors.lastname: D'Souza
mesh_terms: D019295:Computational Biology; D004563:Electrochemistry; D004583:Electrons; D005456:Fluorescent Dyes / Q000737:chemistry*; D037741:Fullerenes / Q000737:chemistry*; D015394:Molecular Structure
chemical_list: D005456:Fluorescent Dyes; D037741:Fullerenes