Scanning tunneling microscopy study of black dye and deoxycholic acid adsorbed on a rutile TiO2(110)

被引：44

作者：

Ikeda, Masatoshi ^{[3
]}

Koide, Naoki ^{[2
]}

Han, Liyuan ^{[2
]}

Sasahara, Akira ^{[1
,3
]}

Onishi, Hiroshi ^{[3
]}

机构：

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

[2] Sharp Co Ltd, Nara 6392198, Japan

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

来源：

LANGMUIR | 2008年 / 24卷 / 15期

关键词：

D O I：

10.1021/la8010019

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Trithiocyanato(4,4',4 ''-tricarboxy-2,2':6',2 ''-terpyridine)ruthenium(II), "black dye", was adsorbed on a rutile TiO2(110) surface and imaged by an ultrahigh vacuum scanning tunneling microscope. The TiO2 (110)-(1 x 1) surface was prepared in a vacuum, covered with pivalate monolayer, and immersed in acetonitrile containing black dye. Black dyes exchanging preadsorbed pivalates were observed on the surface as protrusions with lateral dimensions from 2 to 10 nm. Protrusions with a minimum lateral dimension of 2 nm were assigned to single, isolated black dyes, and larger protrusions were attributed to aggregated dyes. When deoxycholic acid was added to the dye solution, the number ratio of the single dyes to the aggregated dyes increased, while adsorbed deoxycholic acid was not observed.

引用

页码：8056 / 8060

页数：5

共 28 条

[1] Molecular and electronic structures of black dye; an efficient sensitizing dye for nanocrystalline TiO2 solar cells [J].

Aiga, F ;

Tada, T .

JOURNAL OF MOLECULAR STRUCTURE, 2003, 658 (1-2) :25-32

[2] Interfacial electron-transfer dynamics in Ru(tcterpy)(NCS)3-sensitized TiO2 nanocrystalline solar cells [J].

Bauer, C ;

Boschloo, G ;

Mukhtar, E ;

Hagfeldt, A .

JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (49) :12693-12704

[3] Dye-sensitized solar cells with conversion efficiency of 11.1% [J].

Chiba, Yasuo ;

Islam, Ashraful ;

Watanabe, Yuki ;

Komiya, Ryoichi ;

Koide, Naoki ;

Han, Liyuan .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 2006, 45 (24-28) :L638-L640

[4] The surface science of titanium dioxide [J].

Diebold, U .

SURFACE SCIENCE REPORTS, 2003, 48 (5-8) :53-229

[5] In situ infrared spectroscopic analysis of the adsorption of ruthenium(II) bipyridyl dicarboxylic acid photosensitisers to TiO2 in aqueous solutions [J].

Duffy, NW ;

Dobson, KD ;

Gordon, KC ;

Robinson, BH ;

McQuillan, AJ .

CHEMICAL PHYSICS LETTERS, 1997, 266 (5-6) :451-455

[6] Solar energy conversion by dye-sensitized photovoltaic cells [J].

Grätzel, M .

INORGANIC CHEMISTRY, 2005, 44 (20) :6841-6851

[7]

GUO Q, 1999, SURF SCI, V322, P433

[8] Influence of electrolyte on the photovoltaic performance of a dye-sensitized TiO2 solar cell based on a Ru(II) terpyridyl complex photosensitizer [J].

Hara, K ;

Nishikawa, T ;

Kurashige, M ;

Kawauchi, H ;

Kashima, T ;

Sayama, K ;

Alka, K ;

Arakawa, H .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2005, 85 (01) :21-30

[9] Effect of additives on the photovoltaic performance of coumarin-dye-sensitized nanocrystalline TiO2 solar cells [J].

Hara, K ;

Dan-Oh, Y ;

Kasada, C ;

Ohga, Y ;

Shinpo, A ;

Suga, S ;

Sayama, K ;

Arakawa, H .

LANGMUIR, 2004, 20 (10) :4205-4210

[10] Dye-sensitized nanocrystalline TiO2 solar cells based on ruthenium(II) phenanthroline complex photosensitizers [J].

Hara, K ;

Sugihara, H ;

Tachibana, Y ;

Islam, A ;

Yanagida, M ;

Sayama, K ;

Arakawa, H ;

Fujihashi, G ;

Horiguchi, T ;

Kinoshita, T .

LANGMUIR, 2001, 17 (19) :5992-5999

← 1 2 3 →