Plasmons as the primary mechanism of ion-induced modifications in polymers

被引:12
|
作者
Moliton, JP
Jussiaux-Devilder, C
Trigaud, T
Lazzaroni, R
Bredas, JL
Galaup, S
Kihn, Y
Sevely, J
机构
[1] Fac Sci, Unite Microelect Optoelect & Polymeres, F-87060 Limoges, France
[2] Univ Mons, Ctr Rech Elect & Photon Mol, Serv Chim Mat Nouveaux, B-7000 Mons, Belgium
[3] CNRS, Ctr Elaborat Mat & Etud Struct, F-31055 Toulouse, France
关键词
D O I
10.1080/13642819908205750
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The phenomena that lead to modifications of polyimide, polycarbonate and polyparaphenylene irradiated by an ion beam in the 100keV 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.
引用
收藏
页码:793 / 815
页数:23
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