Surface structure and composition of thiophene-bearing monolayers

被引：9

作者：

Harrison, KE

Kang, JF

Haasch, RT

Kilbey, SM ^{[1
]}

机构：

[1] Clemson Univ, Dept Chem Engn, Clemson, SC 29634 USA

[2] Univ Illinois, Ctr Microanal Mat, Frederick Seitz Mat Res Lab, Urbana, IL 61801 USA

来源：

LANGMUIR | 2001年 / 17卷 / 21期

关键词：

D O I：

10.1021/la010546e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We have used X-ray photoelectron spectroscopy and external reflectance Fourier transform infrared spectroscopy (ER-FTIR) to investigate the structure and composition of mixed monolayers made from n-alkyl chains and omega-(3-thienyl)alkyltrichlorosilanes. Monolayers made from 11-(3-thienyl)undecyltrichlorosilane (3TUTS) and undecyltrichlorosilane (UTS) and also from 16-(3-thienyl)hexadecyltrichlorosilane (3THTS) and hexadecyltrichlorosilane (HTS) were examined. ER-FTIR indicates that mixed monolayers made from 3TUTS/UTS and 3THTS/HTS form nearly liquidlike monolayers on indium. tin oxide (ITO) substrates. The pendant thiophene group is located at the periphery of the self-assembled monolayer (SAND, and it appears to be oriented along the SAM. Both spectroscopic techniques suggest that during assembly of mixed monolayers, the omega-(3-thienyl)alkyltrichlorosilane species preferentially adsorbs, leading to a monolayer enriched in the thiophene-capped component. The information resulting from these studies will be generally useful for tailoring the structure and properties of electroactive monolayers on ITO substrates.

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页码：6560 / 6568

页数：9

相关论文

共 79 条

[1] THE EXISTENCE OF STRUCTURE PROGRESSIONS AND WETTING TRANSITIONS IN INTERMEDIATELY DISORDERED MONOLAYER ALKYL CHAIN ASSEMBLIES [J].

ALLARA, DL ;

PARIKH, AN ;

JUDGE, E .

JOURNAL OF CHEMICAL PHYSICS, 1994, 100 (02) :1761-1764

[2] Self-assembled monolayers prepared from ω-thiophene-functionalized n-alkyltrichlorosilane on silicon substrates [J].

Appelhans, D ;

Ferse, D ;

Adler, HJP ;

Plieth, W ;

Fikus, A ;

Grundke, K ;

Schmitt, FJ ;

Bayer, T ;

Adolphi, B .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2000, 161 (01) :203-212

[3] Organic electroluminescent devices: enhanced carrier injection using SAM derivatized ITO electrodes [J].

Appleyard, SFJ ;

Day, SR ;

Pickford, RD ;

Willis, MR .

JOURNAL OF MATERIALS CHEMISTRY, 2000, 10 (01) :169-173

[4] Investigation of the electrode reaction of cytochrome c through mixed self-assembled monolayers of alkanethiols on gold(111) surfaces [J].

Arnold, S ;

Feng, ZQ ;

Kakiuchi, T ;

Knoll, W ;

Niki, K .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1997, 438 (1-2) :91-97

[5] CHAIN-LENGTH DEPENDENCE OF THE STRUCTURE AND WETTING PROPERTIES IN BINARY COMPOSITION MONOLAYERS OF OH-TERMINATED AND CH3-TERMINATED ALKANETHIOLATES ON GOLD [J].

ATRE, SV ;

LIEDBERG, B ;

ALLARA, DL .

LANGMUIR, 1995, 11 (10) :3882-3893

[6] ELECTROCHEMICAL INVESTIGATION OF NOVEL POLYMERIZABLE THIOPHENE FERROCENE CONJUGATES [J].

BACK, R ;

LENNOX, RB .

LANGMUIR, 1992, 8 (03) :959-964

[7] FORMATION OF 2-COMPONENT SURFACES BY THE SPONTANEOUS ASSEMBLY OF MONOLAYERS ON GOLD FROM SOLUTIONS CONTAINING MIXTURES OF ORGANIC THIOLS [J].

BAIN, CD ;

WHITESIDES, GM .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1988, 110 (19) :6560-6561

[8] FORMATION OF MONOLAYERS BY THE COADSORPTION OF THIOLS ON GOLD - VARIATION IN THE HEAD GROUP, TAIL GROUP, AND SOLVENT [J].

BAIN, CD ;

EVALL, J ;

WHITESIDES, GM .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1989, 111 (18) :7155-7164

[9] CORRELATIONS BETWEEN WETTABILITY AND STRUCTURE IN MONOLAYERS OF ALKANETHIOLS ADSORBED ON GOLD [J].

BAIN, CD ;

WHITESIDES, GM .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1988, 110 (11) :3665-3666

[10] FORMATION OF MONOLAYER FILMS BY THE SPONTANEOUS ASSEMBLY OF ORGANIC THIOLS FROM SOLUTION ONTO GOLD [J].

BAIN, CD ;

TROUGHTON, EB ;

TAO, YT ;

EVALL, J ;

WHITESIDES, GM ;

NUZZO, RG .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1989, 111 (01) :321-335

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