Abstract
Intramolecular electron transfer has been investigated for three diphenyletioporphyrins covalently linked to an anthraquinone via a sulfonyloxy bridge at the ortho, meta or para substitution position of the phenyl groups of the porphyrin. The ortho-linked porphyrin is strongly folded and exhibits extremely fast charge separation (CS) and recombination (CR) between porphyrin and anthraquinone (kCS > 3 × 1011 s-1 and kCR = 5.9 × 1010 s-1 in CH2Cl2). The less-folded meta- and para-linked porphyrins have smaller electron transfer rate constants. For the ortho-linked compound in toluene a biphasic charge separation is observed. The triplet state is formed in high yield via fast intersystem crossing in the charge-separated state.
Original language | English (US) |
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Pages (from-to) | 169-175 |
Number of pages | 7 |
Journal | Chemical Physics Letters |
Volume | 151 |
Issue number | 1-2 |
DOIs | |
State | Published - Oct 7 1988 |
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry