RAIRS and TPD study of the direct photopolymerization of styrene thin films in ultrahigh vacuum

被引：9

作者：

Carlo, SR ^{[1
]}

Grassian, VH ^{[1
]}

机构：

[1] UNIV IOWA,DEPT CHEM,IOWA CITY,IA 52242

来源：

LANGMUIR | 1997年 / 13卷 / 08期

关键词：

D O I：

10.1021/la960979v

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Photoinduced polymerization of styrene monomer thin films condensed on a Ag(110) substrate has been studied using a combination of reflectance absorption infrared spectroscopy (RAIRS) and temperature-programmed desorption(TPD). At 100 K, styrene polymerizes upon ultraviolet irradiation. Postirradiation TPD indicates that several species form in the film. These species are identified as styrene dimer, trimer, and tetramer. RAIR spectra as a function of temperature provide evidence for the formation of polystyrene as well. A mechanism for the direct UV photopolymerization of styrene thin films is proposed.

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页码：2307 / 2313

页数：7

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