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Titolo:
In situ scanning tunneling microscopy observation of self-assembled monolayers of 3-mercaptopropionic acid on Au(111) in perchloric acid solution
Autore:
Sawaguchi, T; Sato, Y; Mizutani, F;
Indirizzi:
Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058566, Japan Natl InstAdv Ind Sci & Technol Tsukuba Ibaraki Japan 3058566 8566, Japan
Titolo Testata:
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
fascicolo: 1-2, volume: 507, anno: 2001,
pagine: 256 - 262
Fonte:
ISI
Lingua:
ENG
Soggetto:
COMPLEX-BILAYER MEMBRANE; N-ALKANETHIOL MONOLAYERS; ATOMIC-FORCE MICROSCOPY; CYTOCHROME-C; REDUCTIVE DESORPTION; GLUCOSE-OXIDASE; GOLD ELECTRODE; SURFACE; ELECTROCHEMISTRY; GOLD(111);
Keywords:
in situ scanning tunneling microscopy; self-assembled monolayer; 3-mercaptopropionic acids; interfacial structure;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
51
Recensione:
Indirizzi per estratti:
Indirizzo: Sawaguchi, T Natl Inst Adv Ind Sci & Technol, 1-1-1 Higashi, Tsukuba, Ibaraki 3058566, Japan Natl Inst Adv Ind Sci & Technol 1-1-1 Higashi Tsukuba Ibaraki Japan 3058566
Citazione:
T. Sawaguchi et al., "In situ scanning tunneling microscopy observation of self-assembled monolayers of 3-mercaptopropionic acid on Au(111) in perchloric acid solution", J ELEC CHEM, 507(1-2), 2001, pp. 256-262

Abstract

In situ scanning tunneling microscopy (STM) observation was performed to study the self-assembled monolayers of 3-mercaptopropionic acid (MPA) on Au(111) in aqueous perchloric acid solution. It was seen that the MPA molecules formed a monolayer composed of molecularly ordered domains. High-resolution STM imaging revealed that each individual MPA molecule appeared as two spots, corresponding to the carboxylic functional group of the MPA molecule,and the ordered MPA monolayer was explained by a rhombic (3 x 3) structure. The packing arrangement of the MPA monolayer is close to that of the (root3 x root3)R30 degrees structure, but possesses slightly different positions of molecules, indicating that three adjacent MPA molecules in triangular positions are snuggled up due to intermolecular hydrogen bonding. The reductive desorption reaction in alkaline solution was used to estimate the surface concentration of MPA molecules on Au(111), which is consistent with the(3 x 3) structure obtained from the STM observation. The in situ STM imaging successfully visualized the interfacial structure of MPA monolayers self-assembled on Au(111) at a molecular scale. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/04/20 alle ore 14:03:02