Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Investigation of the adsorption of 4-cyanopyridine on Au(111) by in situ visible-infrared sum frequency generation
Autore:
Pluchery, O; Tadjeddine, A;
Indirizzi:
LURE, F-91898 Orsay, France LURE Orsay France F-91898LURE, F-91898 Orsay, France
Titolo Testata:
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
fascicolo: 1-2, volume: 500, anno: 2001,
pagine: 379 - 387
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELECTROCHEMICAL REDUCTION; SILVER ELECTRODES; RAMAN-SCATTERING; INTERFACE; SPECTROSCOPY; FTIR; SERS; CN;
Keywords:
SFG; 4-cyanopyridine; gold electrodes; lasers; FEL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Tadjeddine, A LURE, BP 34, F-91898 Orsay, France LURE BP 34 Orsay France F-91898 P 34, F-91898 Orsay, France
Citazione:
O. Pluchery e A. Tadjeddine, "Investigation of the adsorption of 4-cyanopyridine on Au(111) by in situ visible-infrared sum frequency generation", J ELEC CHEM, 500(1-2), 2001, pp. 379-387

Abstract

We have investigated the configuration of 4-cyanopyridine on Au(111) electrodes in perchlorate solution by in situ visible-IR sum frequency generation (SFG). Thanks to the use of two IR tunable lasers (the free electron laser CLIO and a table laser based on an optical parametric oscillator) we haveobtained SFG spectra of the system in the spectral range of both the aromatic cycle and the CN stretching modes. We present herein the first SFG spectra ever obtained under electrochemical conditions in the 9-12 mum range. Our results show a potential-dependent orientation of the adsorbed 4-cyanopyridine from a configuration where the molecule is adsorbed perpendicular tothe electrode via the nitrogen of the pyridine ring at negative potentials, to a flat adsorption configuration at intermediate potentials, and finally a perpendicular orientation again where the molecule is bound through thenitrogen of the cyanide end. (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 06/07/20 alle ore 15:41:55