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Titolo:
Layer-by-layer structure in ultrathin aniline and pyridine films on Ag(111)
Autore:
Yang, MC; Rockey, TJ; Pursell, D; Dai, HL;
Indirizzi:
Univ Penn, Dept Chem, Philadelphia, PA 19104 USA Univ Penn Philadelphia PA USA 19104 Dept Chem, Philadelphia, PA 19104 USA
Titolo Testata:
JOURNAL OF PHYSICAL CHEMISTRY B
fascicolo: 48, volume: 105, anno: 2001,
pagine: 11945 - 11948
SICI:
1520-6106(200112)105:48<11945:LSIUAA>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
THERMAL-DESORPTION; PHASE-TRANSITIONS; BENZENE; MOLECULES; CU(110); GROWTH; TRANSISTORS; POLYANILINE; DEPOSITION; TRANSPORT;
Tipo documento:
Letter
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Dai, HL Univ Penn, Dept Chem, Philadelphia, PA 19104 USA Univ Penn Philadelphia PA USA 19104 m, Philadelphia, PA 19104 USA
Citazione:
M.C. Yang et al., "Layer-by-layer structure in ultrathin aniline and pyridine films on Ag(111)", J PHYS CH B, 105(48), 2001, pp. 11945-11948

Abstract

Ultrathin (1-10 layers) aniline and pyridine films deposited on a Ag(111) surface at 90 K have been examined using thermal programmed desorption (TPD). Multiple desorption peaks have been observed for both systems showing film growth from the first chemisorbed layer to the bulk structure through multiple intermediate layers. The growth mechanisms for the two systems are, however, apparently different. Aniline films are formed one layer at a timewith five thermodynamically stable layered structures. In contrast, pyridine films grow through metastable phases, similar to benzene film depositionon metal. In particular, a skin layer over the bulk phase is proposed to account for the TPD spectra. The difference in film growth mechanisms is attributed to the effect of intermolecular interactions.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 10:02:56