Ultrafast Plasmon-Induced Electron Transfer from Gold Nanodots into TiO2 Nanoparticles

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J. Am. Chem. Soc., 129 (48), 14852 -14853, 2007. 10.1021/ja076134v S0002-7863(07)06134-3
Web Release Date: November 10, 2007

Ultrafast Plasmon-Induced Electron Transfer from Gold Nanodots into TiO₂ Nanoparticles

Akihiro Furube,* Luchao Du, Kohjiro Hara, Ryuzi Katoh, and Masanori Tachiya

National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan

akihiro-furube@aist.go.jp

Received August 14, 2007

Abstract:

By using femtosecond transient absorption spectroscopy with visible pump and IR probe to observe generation of injected electrons, we could directly observe plasmon-induced electron transfer from 10 nm gold nanodots to TiO₂ nanocrystalline film. It was revealed that the reaction time was within 240 fs and the yield was about 40%.

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