Dynamics of Photoelectrons and Structural Changes of Tungsten Trioxide Observed by Femtosecond Transient XAFS

Yohei Uemura; Daiki Kido; Yuki Wakisaka; Hiromitsu Uehara; Tadashi Ohba; Yasuhiro Niwa; Shunsuke Nozawa; Tokushi Sato; Kohei Ichiyanagi; Ryo Fukaya; Shin Ichi Adachi; Tetsuo Katayama; Tadashi Togashi; Sigeki Owada; Kanade Ogawa; Makina Yabashi; Keisuke Hatada; Satoru Takakusagi; Toshihiko Yokoyama; Bunsho Ohtani; Kiyotaka Asakura

doi:10.1002/anie.201509252

Dynamics of Photoelectrons and Structural Changes of Tungsten Trioxide Observed by Femtosecond Transient XAFS

Yohei Uemura, Daiki Kido, Yuki Wakisaka, Hiromitsu Uehara, Tadashi Ohba, Yasuhiro Niwa, Shunsuke Nozawa, Tokushi Sato, Kohei Ichiyanagi, Ryo Fukaya, Shin Ichi Adachi, Tetsuo Katayama, Tadashi Togashi, Sigeki Owada, Kanade Ogawa, Makina Yabashi, Keisuke Hatada, Satoru Takakusagi, Toshihiko Yokoyama, Bunsho OhtaniKiyotaka Asakura^*

^*Corresponding author for this work

Department of Physics

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

45 Scopus citations

Abstract

The dynamics of the local electronic and geometric structures of WO₃ following photoexcitation were studied by femtosecond time-resolved X-ray absorption fine structure (XAFS) spectroscopy using an X-ray free electron laser (XFEL). We found that the electronic state was the first to change followed by the local structure, which was affected within 200ps of photoexcitation. Caught on the "speed camera": Photoexcited states of WO₃ were observed by femtosecond X-ray absorption spectroscopy performed using an X-ray free electron laser (XFEL). The local structural transformation of W was found, which occurred after the change of the local electronic state and began within 200ps after excitation.

Original language	English
Pages (from-to)	1364-1367
Number of pages	4
Journal	Angewandte Chemie - International Edition
Volume	55
Issue number	4
DOIs	https://doi.org/10.1002/anie.201509252
State	Published - 2016/01/22

Keywords

X-ray free electron laser (XFEL)
XAFS
photoexcitation
tungsten trioxide
ultrafast spectroscopy

ASJC Scopus subject areas

Catalysis
General Chemistry

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Uemura, Y., Kido, D., Wakisaka, Y., Uehara, H., Ohba, T., Niwa, Y., Nozawa, S., Sato, T., Ichiyanagi, K., Fukaya, R., Adachi, S. I., Katayama, T., Togashi, T., Owada, S., Ogawa, K., Yabashi, M., Hatada, K., Takakusagi, S., Yokoyama, T., ... Asakura, K. (2016). Dynamics of Photoelectrons and Structural Changes of Tungsten Trioxide Observed by Femtosecond Transient XAFS. Angewandte Chemie - International Edition, 55(4), 1364-1367. https://doi.org/10.1002/anie.201509252

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title = "Dynamics of Photoelectrons and Structural Changes of Tungsten Trioxide Observed by Femtosecond Transient XAFS",

abstract = "The dynamics of the local electronic and geometric structures of WO3 following photoexcitation were studied by femtosecond time-resolved X-ray absorption fine structure (XAFS) spectroscopy using an X-ray free electron laser (XFEL). We found that the electronic state was the first to change followed by the local structure, which was affected within 200ps of photoexcitation. Caught on the {"}speed camera{"}: Photoexcited states of WO3 were observed by femtosecond X-ray absorption spectroscopy performed using an X-ray free electron laser (XFEL). The local structural transformation of W was found, which occurred after the change of the local electronic state and began within 200ps after excitation.",

keywords = "X-ray free electron laser (XFEL), XAFS, photoexcitation, tungsten trioxide, ultrafast spectroscopy",

author = "Yohei Uemura and Daiki Kido and Yuki Wakisaka and Hiromitsu Uehara and Tadashi Ohba and Yasuhiro Niwa and Shunsuke Nozawa and Tokushi Sato and Kohei Ichiyanagi and Ryo Fukaya and Adachi, {Shin Ichi} and Tetsuo Katayama and Tadashi Togashi and Sigeki Owada and Kanade Ogawa and Makina Yabashi and Keisuke Hatada and Satoru Takakusagi and Toshihiko Yokoyama and Bunsho Ohtani and Kiyotaka Asakura",

note = "Publisher Copyright: {\textcopyright} 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.",

year = "2016",

month = jan,

day = "22",

doi = "10.1002/anie.201509252",

language = "英語",

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Uemura, Y, Kido, D, Wakisaka, Y, Uehara, H, Ohba, T, Niwa, Y, Nozawa, S, Sato, T, Ichiyanagi, K, Fukaya, R, Adachi, SI, Katayama, T, Togashi, T, Owada, S, Ogawa, K, Yabashi, M, Hatada, K, Takakusagi, S, Yokoyama, T, Ohtani, B & Asakura, K 2016, 'Dynamics of Photoelectrons and Structural Changes of Tungsten Trioxide Observed by Femtosecond Transient XAFS', Angewandte Chemie - International Edition, vol. 55, no. 4, pp. 1364-1367. https://doi.org/10.1002/anie.201509252

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T1 - Dynamics of Photoelectrons and Structural Changes of Tungsten Trioxide Observed by Femtosecond Transient XAFS

AU - Uemura, Yohei

AU - Kido, Daiki

AU - Wakisaka, Yuki

AU - Uehara, Hiromitsu

AU - Ohba, Tadashi

AU - Niwa, Yasuhiro

AU - Nozawa, Shunsuke

AU - Sato, Tokushi

AU - Ichiyanagi, Kohei

AU - Fukaya, Ryo

AU - Adachi, Shin Ichi

AU - Katayama, Tetsuo

AU - Togashi, Tadashi

AU - Owada, Sigeki

AU - Ogawa, Kanade

AU - Yabashi, Makina

AU - Hatada, Keisuke

AU - Takakusagi, Satoru

AU - Yokoyama, Toshihiko

AU - Ohtani, Bunsho

AU - Asakura, Kiyotaka

PY - 2016/1/22

Y1 - 2016/1/22

N2 - The dynamics of the local electronic and geometric structures of WO3 following photoexcitation were studied by femtosecond time-resolved X-ray absorption fine structure (XAFS) spectroscopy using an X-ray free electron laser (XFEL). We found that the electronic state was the first to change followed by the local structure, which was affected within 200ps of photoexcitation. Caught on the "speed camera": Photoexcited states of WO3 were observed by femtosecond X-ray absorption spectroscopy performed using an X-ray free electron laser (XFEL). The local structural transformation of W was found, which occurred after the change of the local electronic state and began within 200ps after excitation.

AB - The dynamics of the local electronic and geometric structures of WO3 following photoexcitation were studied by femtosecond time-resolved X-ray absorption fine structure (XAFS) spectroscopy using an X-ray free electron laser (XFEL). We found that the electronic state was the first to change followed by the local structure, which was affected within 200ps of photoexcitation. Caught on the "speed camera": Photoexcited states of WO3 were observed by femtosecond X-ray absorption spectroscopy performed using an X-ray free electron laser (XFEL). The local structural transformation of W was found, which occurred after the change of the local electronic state and began within 200ps after excitation.

KW - X-ray free electron laser (XFEL)

KW - XAFS

KW - photoexcitation

KW - tungsten trioxide

KW - ultrafast spectroscopy

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U2 - 10.1002/anie.201509252

DO - 10.1002/anie.201509252

M3 - 学術論文

C2 - 26663199

AN - SCOPUS:84956790612

SN - 1433-7851

VL - 55

SP - 1364

EP - 1367

JO - Angewandte Chemie - International Edition

JF - Angewandte Chemie - International Edition

IS - 4

ER -

Dynamics of Photoelectrons and Structural Changes of Tungsten Trioxide Observed by Femtosecond Transient XAFS

Abstract

Keywords

ASJC Scopus subject areas

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