| Autor: |
Otsuki, Joe, Iwasaki, Kosyo, Nakano, Yosuke, Itou, Mitsunari, Araki, Yasuyuki, Ito, Osamu |
| Zdroj: |
Chemistry - A European Journal; July 2004, Vol. 10 Issue: 14 p3461-3466, 6p |
| Abstrakt: |
Well‐defined supramolecular assemblies of Zn and free‐base porphyrins are constructed through the formation of amidinium–carboxylate salt bridges. A one‐to‐one donor–acceptor pair and a four‐to‐one antenna‐type assembly are investigated. The steady‐state and time‐resolved fluorescence measurements unequivocally showed that efficient singlet–singlet excited energy transfer from the Zn–porphyrin complex to the free‐base porphyrin takes place in these assemblies. Indeed, the observed energy‐transfer rates in both types of assemblies are much faster than those the Förster mechanism would suggest, implying the involvement of an intermolecular through‐bond mechanism. |
| Databáze: |
Supplemental Index |
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