Fast energy transfer within a self-assembled cyclic porphyrin tetramer.
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.
Jensen
Rebecca A
RA
Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA.
Kelley
Richard F
RF
Lee
Suk Joong
SJ
Wasielewski
Michael R
MR
Hupp
Joseph T
JT
Tiede
David M
DM
D003500:Cyclization; D004735:Energy Transfer; D008958:Models, Molecular; D015394:Molecular Structure; D011166:Porphyrins / Q000737:chemistry*; D013057:Spectrum Analysis; D013997:Time Factors
D011166:Porphyrins