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Titolo:
Site-specific fragmentation following C : 1s core-level photoionization of1,1,1-trifluoroethane condensed on a Au surface and of a 2,2,2-trifluoroethanol monolayer chemisorbed on a Si(100) surface
Autore:
Nagaoka, S; Tanaka, S; Mase, K;
Indirizzi:
Inst Mol Sci, Okazaki, Aichi 4448585, Japan Inst Mol Sci Okazaki Aichi Japan 4448585 i, Okazaki, Aichi 4448585, Japan Nagoya Univ, Grad Sch Sci, Dept Phys, Chikusa Ku, Nagoya, Aichi 4648602, Japan Nagoya Univ Nagoya Aichi Japan 4648602 a Ku, Nagoya, Aichi 4648602, Japan
Titolo Testata:
JOURNAL OF PHYSICAL CHEMISTRY B
fascicolo: 8, volume: 105, anno: 2001,
pagine: 1554 - 1561
SICI:
1520-6106(20010301)105:8<1554:SFFC:1>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELECTRON-ION COINCIDENCE; INNER-SHELL EXCITATION; CHEMICAL-BOND SCISSION; SOFT X-RAYS; SYNCHROTRON-RADIATION; AUGER-ELECTRON; NITROUS-OXIDE; SELECTIVE FRAGMENTATION; PHOTOCHEMICAL-REACTION; EXCITED N2O;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
63
Recensione:
Indirizzi per estratti:
Indirizzo: Nagaoka, S Inst Mol Sci, Okazaki, Aichi 4448585, Japan Inst Mol Sci Okazaki Aichi Japan 4448585 Aichi 4448585, Japan
Citazione:
S. Nagaoka et al., "Site-specific fragmentation following C : 1s core-level photoionization of1,1,1-trifluoroethane condensed on a Au surface and of a 2,2,2-trifluoroethanol monolayer chemisorbed on a Si(100) surface", J PHYS CH B, 105(8), 2001, pp. 1554-1561

Abstract

We used photoelectron spectroscopy, the energy-selected-photoelectron photoion coincidence (ESPEPICO) method, the Auger electron photoion coincidence(AEPICO) method, and the ab initio method to study site-specific phenomenain the C:1s photoionization of 1,1,1-trifluoroethane (CF3CH3, TFEt) condensed on a Au surface. Site-specific excitation and occurrence of different chemical shifts at two carbon sites were evident in the total electron-yieldspectrum and the photoelectron spectrum, and site-specific fragmentation was evident in the ESPEPICO spectrum. The fragmentation processes inferred from the ESPEPICO and AEPICO results were very different from those occurring in the vapor phase. We also studied the effect of the surface on the site-specific phenomena observed in a 2,2,2-trifluoroethanol (TFEtOH) monolayerchemisorbed on a Si(100) surface (CF3CH2OSi{substrate}). The molecular structure of TFEtOH is the same as that of TFEt except that it has a hydroxyl group substituted for one of the hydrogen atoms. Although site-specific phenomena were also observed in TFEtOH. the fragmentation process was very different from that of TFEt because of the chemisorption structure of TFEtOH on Si(100).

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Documento generato il 25/09/20 alle ore 22:41:17