Polyether-bridged sexithiophene as a complexation-gated molecular wire for intramolecular photoinduced electron transfer

Takuro Oike; Tomoyuki Kurata; Kazuo Takimiya; Tetsuo Otsubo; Yoshio Aso; Huimin Zhang; Yasuyuki Araki; Osamu Ito

doi:10.1021/ja055648w

Polyether-bridged sexithiophene as a complexation-gated molecular wire for intramolecular photoinduced electron transfer

Takuro Oike, Tomoyuki Kurata, Kazuo Takimiya, Tetsuo Otsubo, Yoshio Aso, Huimin Zhang, Yasuyuki Araki, Osamu Ito

Division of Organic- and Biomaterials Research

Research output: Contribution to journal › Article › peer-review

50 Citations (Scopus)

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	https://doi.org/10.1021/ja055648w
Publication status	Published - 2005 Nov 9

ASJC Scopus subject areas

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

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Polyether-bridged sexithiophene as a complexation-gated molecular wire for intramolecular photoinduced electron transfer. / Oike, Takuro; Kurata, Tomoyuki; Takimiya, Kazuo; Otsubo, Tetsuo; Aso, Yoshio; Zhang, Huimin; Araki, Yasuyuki; Ito, Osamu.

In: Journal of the American Chemical Society, Vol. 127, No. 44, 09.11.2005, p. 15372-15373.

Research output: Contribution to journal › Article › peer-review

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AU - Araki, Yasuyuki

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