Electrochemistry and structure of the isomers of aminothiophenol adsorbed on gold

被引:58
作者
Batz, V
Schneeweiss, MA
Kramer, D
Hagenström, H
Kolb, DM
Mandler, D [1 ]
机构
[1] Hebrew Univ Jerusalem, Dept Inorgan & Analyt Chem, IL-91904 Jerusalem, Israel
[2] Univ Ulm, Dept Electrochem, D-89069 Ulm, Germany
关键词
self-assembled monolayers; aminothiophenol; in situ STM; XPS;
D O I
10.1016/S0022-0728(00)00294-1
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The self-assembled monolayers (SAMs) of the three isomers of aminothiophenol, ATP, have been studied by means of electrochemistry, in-situ STM and XPS. We find that the isomers are organized differently. The organization is presumably governed by their intermolecular and surface interactions. Moreover, the chemical and physical characteristics of the interface are significantly and differently affected by the isomers comprising the SAMs. The electrochemistry of the modified surface as well as the bare gold surface in contact with the thiol-containing electrolyte, copper deposition and palladium(II) extraction have been studied for the 2-, 3- and 4-ATP monolayers. The organization of the layers has been investigated by STM. In essence, we find that the different isomers are likely to adopt an orientation that is perpendicular to the surface. While 4-ATP forms the densest monolayer, 2-ATP probably interacts with the gold surface with both the amino and the mercapto groups. Moreover, STM images indicate the partial formation of more than a monolayer. This is supported by XPS measurements and electrochemistry and can be attributed to the SAM modification solution, i.e. sulfuric acid, which allows the formation of sulfate-bridged ATP bilayers. The chemical and physical characteristics of the interfaces are governed by the different organization as well as by the individual chemical properties of each isomer. (C) 2000 Published by Elsevier Science B.V. All rights reserved.
引用
收藏
页码:55 / 68
页数:14
相关论文
共 88 条
[1]   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
[2]   ELECTROCHEMISTRY AT OMEGA-HYDROXY THIOL COATED ELECTRODES .4. COMPARISON OF THE DOUBLE-LAYER AT OMEGA-HYDROXY THIOL AND ALKANETHIOL MONOLAYER COATED AU ELECTRODES [J].
BECKA, AM ;
MILLER, CJ .
JOURNAL OF PHYSICAL CHEMISTRY, 1993, 97 (23) :6233-6239
[3]   DETERMINATION OF SURFACE PKA VALUES OF SURFACE-CONFINED MOLECULES DERIVATIZED WITH PH-SENSITIVE PENDANT GROUPS [J].
BRYANT, MA ;
CROOKS, RM .
LANGMUIR, 1993, 9 (02) :385-387
[4]   Formation of a self-assembled monolayer via the electrospreading of physisorbed micelles of thiolates [J].
Byloos, M ;
Al-Maznai, H ;
Morin, M .
JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (31) :6554-6561
[5]   Desorption of spontaneously adsorbed and electrochemically readsorbed 2-mercaptoethanesulfonate on Au(111) [J].
Calvente, JJ ;
Kovacova, Z ;
Sanchez, MD ;
Andreu, R ;
Fawcett, WR .
LANGMUIR, 1996, 12 (23) :5696-5703
[6]   NEW MONOLAYER PHASES OF N-ALKANE THIOLS SELF-ASSEMBLED ON AU(111) - PREPARATION, SURFACE CHARACTERIZATION, AND IMAGING [J].
CAMILLONE, N ;
EISENBERGER, P ;
LEUNG, TYB ;
SCHWARTZ, P ;
SCOLES, G ;
POIRIER, GE ;
TARLOV, MJ .
JOURNAL OF CHEMICAL PHYSICS, 1994, 101 (12) :11031-11036
[7]   SUPERLATTICE STRUCTURE AT THE SURFACE OF A MONOLAYER OF OCTADECANETHIOL SELF-ASSEMBLED ON AU(111) [J].
CAMILLONE, N ;
CHIDSEY, CED ;
LIU, GY ;
SCOLES, G .
JOURNAL OF CHEMICAL PHYSICS, 1993, 98 (04) :3503-3511
[8]   AXIAL AND AZIMUTHAL ANGLE DETERMINATION WITH SURFACE-ENHANCED RAMAN-SPECTROSCOPY - THIOPHENOL ON COPPER, SILVER, AND GOLD METAL-SURFACES [J].
CARRON, KT ;
HURLEY, LG .
JOURNAL OF PHYSICAL CHEMISTRY, 1991, 95 (24) :9979-9984
[9]   Growth manipulation in electrodeposition with self-assembled monolayers [J].
Cavalleri, O ;
Gilbert, SE ;
Kern, K .
CHEMICAL PHYSICS LETTERS, 1997, 269 (5-6) :479-484
[10]   ON THE INTERPLAY BETWEEN INTERFACIAL POTENTIAL DISTRIBUTION AND ELECTRON-TRANSFER KINETICS IN ORGANIZED MONOLAYERS ON ELECTRODES [J].
CREAGER, SE ;
WEBER, K .
LANGMUIR, 1993, 9 (03) :844-850