Six silane-coupling agents having end-branched fluorocarbon chains: (CF3)(2)CF(CF2)(4)CH2CH2Si(CH3)(OCH3)(2) (1); (CF3)(2)CF(CF2)(6)CH2CH2Si(CH3)(OCH3)(2) (2); (CF3)(2)CF(CF2)(8)CH2CH2Si(CH3)(OCH3)(2) (3); (CF3)(2)CF(CF2)(4) CH2CH2Si(OCH3)(3) (4); (CF3)(2)CF(CF2)(6)CH2CH2Si(OCH3)(3) (5); (CF3)(2)CF(CF2)(8)CH2CH2Si(OCH3)(2) (6); were prepared by the hydrosilylation reaction of dichloro(methyl)silane or trichlorosilane with the corresponding end-branched 1H,1H,2H-polyfluoro-1-alkene ((CF3)(2)CF(CF2)(n) CH=CH2, (n = 4, 6 and 8) in the presence of hydrogen hexachloroplatinate(VI), followed by reaction with sodium methoxide. The application for the surface modification of glass was attempted using these compounds. From measurements of the contact angles theta (degrees) of water and oleic acid against a modified glass surface, it was found that the silane-coupling agents have high modification ability for surface modification. The oxidation resistance of the modified glass surface was also investigated.