Tracking thermally driven molecular reaction and fragmentation by fast photoemission: C60 on Si(111)

A. Goldoni, R. Larciprete, C. Cepek, C. Masciovecchio, Fadwa El-Mellouhi, R. Hudej, M. Sancrotti, G. Paolucci

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We followed in real time the thermal reaction of fullerene molecules with the Si(111) surface by means of fast photoemission spectroscopy. The formation of SiC via C60 fragmentation on Si(111) is used as a key example of the capability of fast photoemission, associated with a fine temperature control, in determining the nature of thermally induced chemical reactions. By monitoring every 13 s the evolution of the C1s core level photoemission spectrum, as a function of temperature and as a function of time at fixed temperature, we were able to identify several steps in the interaction of C60 with Si(111). A model describing the thermal evolution of this interaction, in agreement with these and other experimental observations, considers the initial chemisorption of C60 in mainly metastable configurations, the evolution toward more stable configurations, allowed by molecular rotations and breaking of Si-Si bonds, the cage deformation to further increase the number of C-Si bonds, the final cage fragmentation and SiC formation only above 1050 ± 10 K.

Original languageEnglish
Pages (from-to)775-781
Number of pages7
JournalSurface Review and Letters
Volume9
Issue number2
DOIs
Publication statusPublished - 1 Apr 2002
Externally publishedYes

Fingerprint

Photoemission
fragmentation
photoelectric emission
Fullerenes
Core levels
Photoelectron spectroscopy
Chemisorption
Temperature control
Chemical reactions
molecular rotation
temperature control
configurations
Temperature
chemisorption
Molecules
fullerenes
Monitoring
chemical reactions
interactions
temperature

ASJC Scopus subject areas

  • Materials Science(all)
  • Surfaces and Interfaces
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Tracking thermally driven molecular reaction and fragmentation by fast photoemission : C60 on Si(111). / Goldoni, A.; Larciprete, R.; Cepek, C.; Masciovecchio, C.; El-Mellouhi, Fadwa; Hudej, R.; Sancrotti, M.; Paolucci, G.

In: Surface Review and Letters, Vol. 9, No. 2, 01.04.2002, p. 775-781.

Research output: Contribution to journalArticle

Goldoni, A, Larciprete, R, Cepek, C, Masciovecchio, C, El-Mellouhi, F, Hudej, R, Sancrotti, M & Paolucci, G 2002, 'Tracking thermally driven molecular reaction and fragmentation by fast photoemission: C60 on Si(111)', Surface Review and Letters, vol. 9, no. 2, pp. 775-781. https://doi.org/10.1142/S0218625X02002944
Goldoni, A. ; Larciprete, R. ; Cepek, C. ; Masciovecchio, C. ; El-Mellouhi, Fadwa ; Hudej, R. ; Sancrotti, M. ; Paolucci, G. / Tracking thermally driven molecular reaction and fragmentation by fast photoemission : C60 on Si(111). In: Surface Review and Letters. 2002 ; Vol. 9, No. 2. pp. 775-781.
@article{b457065182fb4681be137abf2c156b45,
title = "Tracking thermally driven molecular reaction and fragmentation by fast photoemission: C60 on Si(111)",
abstract = "We followed in real time the thermal reaction of fullerene molecules with the Si(111) surface by means of fast photoemission spectroscopy. The formation of SiC via C60 fragmentation on Si(111) is used as a key example of the capability of fast photoemission, associated with a fine temperature control, in determining the nature of thermally induced chemical reactions. By monitoring every 13 s the evolution of the C1s core level photoemission spectrum, as a function of temperature and as a function of time at fixed temperature, we were able to identify several steps in the interaction of C60 with Si(111). A model describing the thermal evolution of this interaction, in agreement with these and other experimental observations, considers the initial chemisorption of C60 in mainly metastable configurations, the evolution toward more stable configurations, allowed by molecular rotations and breaking of Si-Si bonds, the cage deformation to further increase the number of C-Si bonds, the final cage fragmentation and SiC formation only above 1050 ± 10 K.",
author = "A. Goldoni and R. Larciprete and C. Cepek and C. Masciovecchio and Fadwa El-Mellouhi and R. Hudej and M. Sancrotti and G. Paolucci",
year = "2002",
month = "4",
day = "1",
doi = "10.1142/S0218625X02002944",
language = "English",
volume = "9",
pages = "775--781",
journal = "Surface Review and Letters",
issn = "0218-625X",
publisher = "World Scientific Publishing Co. Pte Ltd",
number = "2",

}

TY - JOUR

T1 - Tracking thermally driven molecular reaction and fragmentation by fast photoemission

T2 - C60 on Si(111)

AU - Goldoni, A.

AU - Larciprete, R.

AU - Cepek, C.

AU - Masciovecchio, C.

AU - El-Mellouhi, Fadwa

AU - Hudej, R.

AU - Sancrotti, M.

AU - Paolucci, G.

PY - 2002/4/1

Y1 - 2002/4/1

N2 - We followed in real time the thermal reaction of fullerene molecules with the Si(111) surface by means of fast photoemission spectroscopy. The formation of SiC via C60 fragmentation on Si(111) is used as a key example of the capability of fast photoemission, associated with a fine temperature control, in determining the nature of thermally induced chemical reactions. By monitoring every 13 s the evolution of the C1s core level photoemission spectrum, as a function of temperature and as a function of time at fixed temperature, we were able to identify several steps in the interaction of C60 with Si(111). A model describing the thermal evolution of this interaction, in agreement with these and other experimental observations, considers the initial chemisorption of C60 in mainly metastable configurations, the evolution toward more stable configurations, allowed by molecular rotations and breaking of Si-Si bonds, the cage deformation to further increase the number of C-Si bonds, the final cage fragmentation and SiC formation only above 1050 ± 10 K.

AB - We followed in real time the thermal reaction of fullerene molecules with the Si(111) surface by means of fast photoemission spectroscopy. The formation of SiC via C60 fragmentation on Si(111) is used as a key example of the capability of fast photoemission, associated with a fine temperature control, in determining the nature of thermally induced chemical reactions. By monitoring every 13 s the evolution of the C1s core level photoemission spectrum, as a function of temperature and as a function of time at fixed temperature, we were able to identify several steps in the interaction of C60 with Si(111). A model describing the thermal evolution of this interaction, in agreement with these and other experimental observations, considers the initial chemisorption of C60 in mainly metastable configurations, the evolution toward more stable configurations, allowed by molecular rotations and breaking of Si-Si bonds, the cage deformation to further increase the number of C-Si bonds, the final cage fragmentation and SiC formation only above 1050 ± 10 K.

UR - http://www.scopus.com/inward/record.url?scp=0036553345&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036553345&partnerID=8YFLogxK

U2 - 10.1142/S0218625X02002944

DO - 10.1142/S0218625X02002944

M3 - Article

AN - SCOPUS:0036553345

VL - 9

SP - 775

EP - 781

JO - Surface Review and Letters

JF - Surface Review and Letters

SN - 0218-625X

IS - 2

ER -