TY - JOUR
T1 - Plasmons as the primary mechanism of ion-induced modifications in polymers
AU - Moliton, J. P.
AU - Jussiaux-Devilder, C.
AU - Trigaud, T.
AU - Lazzaroni, R.
AU - Bredas, J. L.
AU - Kihn, Y.
AU - Sevely, J.
N1 - Funding Information:
ACKNOWLEDGEMENTS The authors would like to acknowledge Dr B. Franqois (CNRS), who has carefully worked out the copolymer PPP-PS. The collaboration between Limoges and Mons is supported by a joint programme of the Ministire FranCais des Affaires Etrangeres and the Communaute Franqaise de Belgique (Projet Tournesol 95-036). Research on polyrners in Mons is supported by the Belgian Federal Government P6le d'Attraction Interuniversitaire programme (PA1 4/1 l), Fonds National de la Recherche Scientifique (FNRS-FRFC) and an IBM Academic Joint Study. R. Lazzaroni is Maitre de Recherche of the FNRS and Professeur Invite in the University of Lirnoges. Research on microelectro-optical polymer devices in Limoges is supported by a France-Telecom programme and by aid from the Regional Council of the Region Limousin.
PY - 1999/5
Y1 - 1999/5
N2 - The phenomena that lead to modifications of polyimide, polycarbonate and polyparaphenylene irradiated by an ion beam in the 100 keV energy range are studied. A model of energy transfer based on plasmon-like collective effects occurring during the physical stage of the ion-polymer interaction, previously implemented for poly(methyl methacrylate) and cellulosic derivatives, is extended to these polymers. In the framework of this model, we carry out quantum-chemical calculations of the valence-band density of electronic states. The resulting theoretical spectrum is then compared with the experimental plasmon line obtained by electron-energy-loss spectrometry. This approach sheds light on the selective bond cleavages induced by the energy transfer at the primary physical step of the ion-polymer interaction.
AB - The phenomena that lead to modifications of polyimide, polycarbonate and polyparaphenylene irradiated by an ion beam in the 100 keV energy range are studied. A model of energy transfer based on plasmon-like collective effects occurring during the physical stage of the ion-polymer interaction, previously implemented for poly(methyl methacrylate) and cellulosic derivatives, is extended to these polymers. In the framework of this model, we carry out quantum-chemical calculations of the valence-band density of electronic states. The resulting theoretical spectrum is then compared with the experimental plasmon line obtained by electron-energy-loss spectrometry. This approach sheds light on the selective bond cleavages induced by the energy transfer at the primary physical step of the ion-polymer interaction.
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U2 - 10.1080/13642819908205750
DO - 10.1080/13642819908205750
M3 - Article
AN - SCOPUS:0032650721
VL - 79
SP - 793
EP - 815
JO - Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
JF - Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
SN - 1364-2812
IS - 5
ER -