Structure and Photo-Induced Charge Transfer of Pyridine Molecules Adsorbed on TiO2(110): A NEXAFS and Core-Hole-Clock Study

被引：1

作者：

Kondoh, Hiroshi ^{[1
]}

Higashi, Yuki ^{[1
]}

Yoshida, Masaaki ^{[1
]}

Monya, Yuji ^{[1
]}

Toyoshima, Ryo ^{[1
]}

Mase, Kazuhiko ^{[2
]}

Amemiya, Kenta ^{[2
]}

Tsukioka, Fukashi ^{[3
]}

Nagasaka, Masanari ^{[3
]}

Iwasawa, Yasuhiro ^{[3
]}

Orita, Hideo ^{[4
]}

Mukai, Kozo ^{[5
]}

Yoshinobu, Jun ^{[5
]}

机构：

[1] Keio Univ, Dept Chem, Kohoku Ku, Yokohama, Kanagawa 2238522, Japan

[2] High Energy Accelerator Res Org, Inst Mat Struct Sci, Photon Factory, Tsukuba, Ibaraki 3050801, Japan

[3] Univ Tokyo, Dept Chem, Bunkyo Ku, Tokyo 1130033, Japan

[4] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058568, Japan

[5] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

来源：

ELECTROCHEMISTRY | 2014年 / 82卷 / 05期

关键词：

Near-Edge X-ray Absorption Fine Structure; Core-Hole-Clock Spectroscopy; Pyridine; TiO2(110); ELECTRON-TRANSFER; INTERFACE; SPECTROSCOPIES; EFFICIENCY; DYNAMICS; SURFACE; CELLS;

D O I：

10.5796/electrochemistry.82.341

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The structure and photo-induced charge transfer time of pyridine molecules adsorbed on a rutile TiO2(110) surface have been studied by near-edge x-ray absorption fine structure (NEXAFS) spectroscopy, density functional theory (DFT) calculations and core-hole-clock (CHC) spectroscopy. Polarization dependence of NEXAFS spectra and geometrical optimization by the DFT calculations revealed that the pyridine molecules are bound to the TiO2 surface with an upright configuration where the N atom binds to a surface Ti atom. The CHC results indicate that the charge transfer from the LUMO+2 orbital of pyridine with a pi symmetry to the conduction band of TiO2 is quite fast, where the timescale is less than 3 fs. (C) The Electrochemical Society of Japan, All rights reserved.

引用

页码：341 / 345

页数：5

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