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Laboratoire de Spectroscopie Moléculaire de Surface
Yves Caudano


Vibrational investigation of chemisorbed C60 by infrared-visible sum-frequency generation spectroscopy

Y. Caudano (1), A. Peremans (1), P.A.Thiry (1), P. Dumas (2, 3) and A. Tadjeddine (2)
Surf. Sci. 377-379 (1997) 1071-1075


The C60/Ag(111) interface is studied by infrared reflection absorption (IRAS) and infrared-visible sum-frequency generation (SFG) spectroscopies for infrared frequencies between 1300 cm-1 and 1500 cm-1. Both IRAS and SFG spectroscopies reveal a vibrational mode located around 1445 cm-1. This mode is assigned to the Ag(2) "pentagonal pinch" mode of C60, which, although being Raman active and infrared inactive in the free molecule, becomes infrared active upon adsorption of the molecule.

Author addresses

  1. Laboratoire de Spectroscopie Moléculaire de Surface (LASMOS)
    Institute for Studies in Interface Science (ISIS)
    Facultés Universitaires Notre-Dame de la Paix (FUNDP)
    61 Rue de Bruxelles, B-5000 Namur, Belgium

  2. Laboratoire pour l'Utilisation du Rayonnement Electromagnétique (LURE)
    Centre National de la Recherche Scientifique (CNRS)
    Bâtiment 209D, F-91405 Orsay, France

  3. Also LASIR-CNRS, 2 rue Henry Dunant, F-94320 Thiais, France

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