Adsorption of fullerene and azafullerene on Cu(111) studied by electron energy loss spectroscopy

Christophe Silien; I. Marenne; J. Auerhammer; N. Tagmatarchis; K. Prassides; P. A. Thiry; P. Rudolf

doi:10.1016/S0039-6028(00)01000-1

Adsorption of fullerene and azafullerene on Cu(111) studied by electron energy loss spectroscopy

Christophe Silien, I. Marenne, J. Auerhammer, N. Tagmatarchis, K. Prassides, P. A. Thiry, P. Rudolf

Department of Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Fullerene and azafullerene films were studied by electron energy loss spectroscopy in reflection geometry. Compared to C₆₀, (C₅₉N)₂ multilayers show additional vibrational modes that are characteristic of the dimer structure. The (C₅₉N)₂ is semiconductor-like and giant optically allowed excitonic transitions are found in the gap in drastic contrast with C₆₀. The azafullerene monolayer on Cu(1 1 1) no longer shows the presence of dimers, indicating monomer adsorption. Similarly to C₆₀, azafullerene molecules in contact with the metal substrate receive a transferred charge between two and three electrons. However, the C₅₉N appears more covalently bound to Cu because it decomposes when heated above 660 K while C₆₀ only desorbs.

Original language	English (Ireland)
Pages (from-to)	1-8
Number of pages	8
Journal	Surface Science
Volume	482-485
Issue number	PART 1
DOIs	https://doi.org/10.1016/S0039-6028(00)01000-1
Publication status	Published - 20 Jun 2001

Keywords

Electron energy loss spectroscopy (EELS)
Fullerenes
Vibrations of adsorbed molecules

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10.1016/S0039-6028(00)01000-1

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title = "Adsorption of fullerene and azafullerene on Cu(111) studied by electron energy loss spectroscopy",

abstract = "Fullerene and azafullerene films were studied by electron energy loss spectroscopy in reflection geometry. Compared to C60, (C59N)2 multilayers show additional vibrational modes that are characteristic of the dimer structure. The (C59N)2 is semiconductor-like and giant optically allowed excitonic transitions are found in the gap in drastic contrast with C60. The azafullerene monolayer on Cu(1 1 1) no longer shows the presence of dimers, indicating monomer adsorption. Similarly to C60, azafullerene molecules in contact with the metal substrate receive a transferred charge between two and three electrons. However, the C59N appears more covalently bound to Cu because it decomposes when heated above 660 K while C60 only desorbs.",

keywords = "Electron energy loss spectroscopy (EELS), Fullerenes, Vibrations of adsorbed molecules",

author = "Christophe Silien and I. Marenne and J. Auerhammer and N. Tagmatarchis and K. Prassides and Thiry, {P. A.} and P. Rudolf",

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T1 - Adsorption of fullerene and azafullerene on Cu(111) studied by electron energy loss spectroscopy

AU - Silien, Christophe

AU - Marenne, I.

AU - Auerhammer, J.

AU - Tagmatarchis, N.

AU - Prassides, K.

AU - Thiry, P. A.

AU - Rudolf, P.

PY - 2001/6/20

Y1 - 2001/6/20

N2 - Fullerene and azafullerene films were studied by electron energy loss spectroscopy in reflection geometry. Compared to C60, (C59N)2 multilayers show additional vibrational modes that are characteristic of the dimer structure. The (C59N)2 is semiconductor-like and giant optically allowed excitonic transitions are found in the gap in drastic contrast with C60. The azafullerene monolayer on Cu(1 1 1) no longer shows the presence of dimers, indicating monomer adsorption. Similarly to C60, azafullerene molecules in contact with the metal substrate receive a transferred charge between two and three electrons. However, the C59N appears more covalently bound to Cu because it decomposes when heated above 660 K while C60 only desorbs.

AB - Fullerene and azafullerene films were studied by electron energy loss spectroscopy in reflection geometry. Compared to C60, (C59N)2 multilayers show additional vibrational modes that are characteristic of the dimer structure. The (C59N)2 is semiconductor-like and giant optically allowed excitonic transitions are found in the gap in drastic contrast with C60. The azafullerene monolayer on Cu(1 1 1) no longer shows the presence of dimers, indicating monomer adsorption. Similarly to C60, azafullerene molecules in contact with the metal substrate receive a transferred charge between two and three electrons. However, the C59N appears more covalently bound to Cu because it decomposes when heated above 660 K while C60 only desorbs.

KW - Electron energy loss spectroscopy (EELS)

KW - Fullerenes

KW - Vibrations of adsorbed molecules

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JO - Surface Science

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ER -

Adsorption of fullerene and azafullerene on Cu(111) studied by electron energy loss spectroscopy

Abstract

Keywords

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