Krishnan, V. ; Batova, E. E. ; Shafirovich, V. Ya. (1994) Photoinduced electron transfer in zinc porphyrin-crown ether supramolecule with Eu3+ electron acceptor in crown void Journal of Photochemistry and Photobiology A: Chemistry, 84 (3). pp. 233-235. ISSN 1010-6030
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/101060...
Related URL: http://dx.doi.org/10.1016/1010-6030(94)03865-1
Abstract
Photoinduced electron transfer (ET) reactions in the zinc porphyrin-crown ether (ZnPCE) supramolecule, in which one crown ether moiety containing Eu3+ as electron acceptor is convalently linked to zinc porphyrin (ZnP), were studied by flash photolysis. In methanol solutions, highly efficient charge separation occurs via intramolecular ET from 3ZnP to Eu3+ encapsulated in the crown ether void k1=(3±1)×103s-1) and intramolecular ET from 3ZnP to uncomplexed Eu3+ (k2=(2.5±0.5)×103s-1). Intermolecular ET from Eu2+ escaped from the crown ether void to ZnP·+ (kr=(4.3±0.7)×108 M-1s-1) seems to be the main pathway of charge recombination.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 17261 |
| Deposited On: | 16 Nov 2010 08:05 |
| Last Modified: | 04 Jun 2011 06:26 |
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