α,ω-Bischlorosilanes, Cl
3SiCH
2CH
2(CF
2)
nCH
2CH
2SiCl
3(n=4 (I), 6 (II), or 8 (III)), were synthesized using hydrosilylation reaction with trichlorosilane of the corresponding α,ω-divinylpolyfluoroalkanes, CH
2=CH(CF
2)
nCH=CH
2(n=4, 6, or 8), in the presence of hexachloroplatinate(IV) as catalyst at 100°C. Two other α,ω-bissilanes, (CH
3O)
3 SiCH
2CH
2(CF
2)
nCH
2CH
2Si(OCH
3)
3(n=4 (IV), 6 (V), or 8 (VI)), and (OCN)
3SiCH
2CH
2(CF
2)
nCH
2CH
2Si(NCO)
3(n=4 (VII), 6 (VIII), or 8 (IX)), were prepared via reactions of α,ω-bischlorosilanes synthesized with sodium methoxide and silver cyanate, respectively. The structures of silicon wafer surfaces modified with the α,ω-bismethoxysilanes were investigated by polarized FT-IR spectroscopy. The bismethoxysilanes reacted with silicon wafer surface through only one of the reactive groups, -Si(OCH
3)
3, thereby forming no loop structure on the surface.
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