Photonic switching of photoinduced electron transfer in a dithienylethene-porphyrin-fullerene triad molecule

Paul A. Liddell, Gerdenis Kodis, Ana Moore, Thomas Moore, Devens Gust

Research output: Contribution to journalArticle

206 Citations (Scopus)

Abstract

A dithienylethene (DTE)-porphyrin (P)-fullerene (C60) triad molecule in which intramolecular photoinduced electron transfer is controlled by the photochromic DTE moiety has been prepared. Irradiation of the molecule with visible light gives the open form of the dithienylethene (DTEo). Excitation of the porphyrin gives DTEo-1P-C60, which undergoes photoinduced electron transfer with a time constant of 25 ps to generate DTEo-P•+-C60 •-. Irradiation with ultraviolet light produces the closed form of the dithienylethene (DTEc). Excitation of DTEc-P-C60 yields DTEc-1P-C60, whose porphyrin first excited singlet state is quenched in 2.3 ps by singlet-singlet energy transfer to DTEc, generating 1DTEc-P-C60 and precluding significant photoinduced electron transfer. Such highly reversible photonically controlled intramolecular photoinduced electron transfer may eventually be useful in the design of photonic or optoelectronic devices.

Original languageEnglish (US)
Pages (from-to)7668-7669
Number of pages2
JournalJournal of the American Chemical Society
Volume124
Issue number26
DOIs
StatePublished - Jul 3 2002

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Optics and Photonics
Fullerenes
Porphyrins
Photonics
Electrons
Molecules
Irradiation
Photonic devices
Energy Transfer
Ultraviolet Rays
Excited states
Optoelectronic devices
Energy transfer
Light
Equipment and Supplies

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Photonic switching of photoinduced electron transfer in a dithienylethene-porphyrin-fullerene triad molecule. / Liddell, Paul A.; Kodis, Gerdenis; Moore, Ana; Moore, Thomas; Gust, Devens.

In: Journal of the American Chemical Society, Vol. 124, No. 26, 03.07.2002, p. 7668-7669.

Research output: Contribution to journalArticle

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AU - Gust, Devens

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N2 - A dithienylethene (DTE)-porphyrin (P)-fullerene (C60) triad molecule in which intramolecular photoinduced electron transfer is controlled by the photochromic DTE moiety has been prepared. Irradiation of the molecule with visible light gives the open form of the dithienylethene (DTEo). Excitation of the porphyrin gives DTEo-1P-C60, which undergoes photoinduced electron transfer with a time constant of 25 ps to generate DTEo-P•+-C60 •-. Irradiation with ultraviolet light produces the closed form of the dithienylethene (DTEc). Excitation of DTEc-P-C60 yields DTEc-1P-C60, whose porphyrin first excited singlet state is quenched in 2.3 ps by singlet-singlet energy transfer to DTEc, generating 1DTEc-P-C60 and precluding significant photoinduced electron transfer. Such highly reversible photonically controlled intramolecular photoinduced electron transfer may eventually be useful in the design of photonic or optoelectronic devices.

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