Photoinduced electron transfer between a carotenoid and TiO2 nanoparticle

…, T Pascher, L Sun, V Sundström, T Polívka

文献索引：He, Jianjun; Benkoe, Gabor; Korodi, Ferenc; Polivka, Tomas; Lomoth, Reiner; Akermark, Bjoern; Sun, Licheng; Hagfeldt, Anders; Sundstroem, Villy Journal of the American Chemical Society, 2002 , vol. 124, # 17 p. 4922 - 4932

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被引用次数: 89

摘要

The dynamics of photoinduced electron injection and recombination between all-trans-8'- apo-β-caroten-8'-oic acid (ACOA) and a TiO2 colloidal nanoparticle have been studied by means of transient absorption spectroscopy. We observed an ultrafast (~ 360 fs) electron injection from the initially excited S2 state of ACOA into the TiO2 conduction band with a quantum yield of~ 40%. As a result, the ACOA+ radical cation was formed, as ...