Lateral distribution of N3 dye molecules on TiO2 (110) surface

被引：10

作者：

Ikeda, Masatoshi ^{[1
]}

Koide, Naoki ^{[2
]}

Han, Liyuan ^{[2
]}

Pang, Chi Lun ^{[3
,4
]}

Sasahara, Akira ^{[1
,5
]}

Onishi, Hiroshi ^{[1
]}

机构：

[1] Kobe Univ, Fac Sci, Dept Chem, Nada Ku, Kobe, Hyogo 6578501, Japan

[2] Sharp Co Ltd, Nara 6392198, Japan

[3] UCL, London Ctr Nanotechnol, London WC1H 0AJ, England

[4] UCL, Dept Chem, London WC1H 0AJ, England

[5] Japan Sci & Technol Agcy, Kawaguchi, Saitama 3320012, Japan

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2009年 / 202卷 / 2-3期

关键词：

N3; Titanium dioxide; Scanning tunneling microscopy; Aggregation; Autocorrelation analysis; SENSITIZED SOLAR-CELLS; SCANNING-TUNNELING-MICROSCOPY; NANOCRYSTALLINE TIO2; DEOXYCHOLIC-ACID; COUMARIN-DYE; TIO2(110); ADSORPTION; PHOTOSENSITIZERS; ELECTRICITY; ADSORBATES;

D O I：

10.1016/j.jphotochem.2008.12.005

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The lateral distribution of Ru(4,4'-dicarboxy-2,2'-bipyridine)(2)(NCS)(2) (N3) dye molecules on a titanium dioxide (TiO2) surface was examined by using a Scanning tunneling microscope. Pivalate ((CH3)(3)CCOO-)-covered rutile TiO2 (110) Surfaces were immersed in acetonitrile containing the N3 dye. The N3 molecules which replaced the pivalates were observed as protrusions embedded in the pivalate monolayer. A two-dimensional radial distribution function indicated that the adsorbed N3 molecules tended to be aggregated. Trapping of an N3 molecule in the solution by a preadsorbed N3 molecule was proposed as a driving force for the aggregation. The hydrogen bonds between the carboxyl groups of two N3 molecules contribute to the trapping. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：185 / 190

页数：6

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