Fluorophore(s) appended fullerene dyads and triads for probing photoinduced energy transfer: syntheses, electronic structure, and fluorescence studies.
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.
Deviprasad
Gollapalli R
GR
Department of Chemistry, Wichita State University, 1845 Fairmount, Wichita, KS 67260-0051, USA.
Smith
Phillip M
PM
Zandler
Melvin E
ME
Rogers
Lisa M
LM
D'Souza
Francis
F
D019295:Computational Biology; D004563:Electrochemistry; D004583:Electrons; D005456:Fluorescent Dyes / Q000737:chemistry*; D037741:Fullerenes / Q000737:chemistry*; D015394:Molecular Structure
D005456:Fluorescent Dyes; D037741:Fullerenes