LONG-LIVED CHARGE SEPARATED STATES FROM ZINC PORPHYRIN-FREE BASE PORPHYRIN-DIIMIDE-QUINONE TETRADS

Authors
OSUKA A ZHANG RP MARUYAMA K OHNO T NOZAKI K
Citation
A. Osuka et al., LONG-LIVED CHARGE SEPARATED STATES FROM ZINC PORPHYRIN-FREE BASE PORPHYRIN-DIIMIDE-QUINONE TETRADS, Chemistry Letters, (10), 1993, pp. 1727-1730
Citations number
11
Categorie Soggetti
Chemistry
Journal title
Chemistry Letters → ACNP
ISSN journal
03667022
Issue
10
Year of publication
1993
Pages
1727 - 1730
Database
ISI
SICI code
0366-7022(1993):10<1727:LCSSFZ>2.0.ZU;2-C
Abstract
Tetrads consisting of zinc porphyrin (ZnP), free base porphyrin (H2P), naphthalene- 1,4,5,8-tetracarboxylic diimide (NIm), and quinone (Q) w ere synthesized. Upon photoexcitation, these tetrads provide ion pair states (ZnP)+-H2P-NIm-(Q)-, whose lifetimes are much longer, reaching more than 100 mus in THF-butyronitrile, in biphenyl-bridged models but shorter in diphenylmethyl-bridged models in comparison to the corresp onding Q-free triads.