A combined theoretical and experimental study of the electrochemically induced chemisorption of acrylonitrile on nickel, copper, and zinc

被引:13
作者
Fredriksson, C
Lazzaroni, R
Bredas, JL
Mertens, M
Jerome, R
机构
[1] UNIV MONS,CTR RECH ELECT & PHOTON MOL,SERV CHIM MAT NOUVEAUX,B-7000 MONS,BELGIUM
[2] UNIV LIEGE,CTR ETUD & RECH MACROMOL,B-4000 LIEGE,BELGIUM
基金
瑞典研究理事会;
关键词
D O I
10.1016/0009-2614(96)00668-9
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We report a combined theoretical and experimental study of the interaction between a series of transition metals (Ni, Cu, Zn) and acrylonitrile. We demonstrate experimentally that the transition metal has a selective role in the grafting of electropolymerized acrylonitrile. Nickel and copper substrates support the formation of a polyacrylonitrile film, while zinc does not. Quantum chemical calculations indicate that acrylonitrile molecules form pi-d bonds with Ni and Cu atoms, but do not react chemically with a Zn atom, in qualitative agreement with the experiment. Computational results also show that the electron affinity is significantly increased upon chemisorption, promoting radical anion species at the metal surface as initiators for polymerization.
引用
收藏
页码:356 / 362
页数:7
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