title: Fast energy transfer within a self-assembled cyclic porphyrin tetramer.
abstract: The structure of a cyclic self-assembled tetramer of an asymmetric meso-ethynylpyridyl-functionalized Zn(II)-porphyrin was established by solution-phase X-ray scattering and diffraction; femtosecond transient absorption and anisotropy spectroscopies were used to (a) observe rapid energy transfer (3.8 ps(-1)) between porphyrin subunits and (b) establish that the transfer occurs between adjacent units.
authors.affiliation: Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA.
authors.forename: Rebecca A
authors.initials: RA
authors.lastname: Jensen
authors.forename: Richard F
authors.initials: RF
authors.lastname: Kelley
authors.forename: Suk Joong
authors.initials: SJ
authors.lastname: Lee
authors.forename: Michael R
authors.initials: MR
authors.lastname: Wasielewski
authors.forename: Joseph T
authors.initials: JT
authors.lastname: Hupp
authors.forename: David M
authors.initials: DM
authors.lastname: Tiede
mesh_terms: D003500:Cyclization; D004735:Energy Transfer; D008958:Models, Molecular; D015394:Molecular Structure; D011166:Porphyrins / Q000737:chemistry*; D013057:Spectrum Analysis; D013997:Time Factors
chemical_list: D011166:Porphyrins