Abstract
The porphyrin-sexithiophene-fullerene triad 2, where the two central thiophene units of the sexithiophene spacer are bridged with a crown-ether-like polyether chain, undergoes efficient intramolecular electron transfer from the photoexcited porphyrin moiety to the fullerene through the sexithiophene. However, complexation with a sodium cation in the crown ether ring causes complete suppression of electron transfer as a result of a drastic conformational change of the sexithiophene backbone. Furthermore, decomplexation resumes the photoinduced electron transfer. This on/off switching phenomenon indicates that the polyether-bridged sexithiophene can function as a complexation-gated molecular wire.
| Original language | English |
|---|---|
| Pages (from-to) | 15372-15373 |
| Number of pages | 2 |
| Journal | Journal of the American Chemical Society |
| Volume | 127 |
| Issue number | 44 |
| DOIs | |
| Publication status | Published - 2005 Nov 9 |
ASJC Scopus subject areas
- Catalysis
- Chemistry(all)
- Biochemistry
- Colloid and Surface Chemistry
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Cite this
Oike, T., Kurata, T., Takimiya, K., Otsubo, T., Aso, Y., Zhang, H., Araki, Y., & Ito, O. (2005). Polyether-bridged sexithiophene as a complexation-gated molecular wire for intramolecular photoinduced electron transfer. Journal of the American Chemical Society, 127(44), 15372-15373. https://doi.org/10.1021/ja055648w