苯乙炔基封端的聚(硅乙炔-4,4‘-二苯醚)的合成和性能.pdfVIP

Synthesis and properties of phenyl acetylene terminated poly (silyleneethynylene-4, 4’-phenylethereneethynylene)s 1 Xu Jinfeng Shen Yongjia* Institute of Fine Chemicals Institute of Fine Chemicals East China University of Science and Technology East China University of Science and Technology Shanghai 200237, P. R . China Shanghai 200237, P. R . China eleven_xu@163.com yjshen@ Wang Chengyun Institute of Fine Chemicals East China University of Science and Technology Shanghai 200237, P. R . China cywang@ Abstract Two kinds of phenylacetylene-terminated poly(silyleneethynylene-4,4 ′ - phenylethereneethynylene)s, {C6H5-C ≡ C-[Si(R)2-C ≡ C-C6H4-O-C6H4-C ≡ C]n-C6H5} wherein R represents methyl or phenyl, were synthesized by condensation reaction between dichlorosilanes and 4, 4 ′-diethynyldiphenyl ether using organic magnesium reagents. The polymers were characterized by NMR, IR, gel permeation chromatography, thermogravimetric analysis, and differential scattering calorimetries. Keywords: phenyl acetylene, polysilanes, gel permeation chromatography, thermogravimetric analysis, differential scattering calorimetries 1 Introduction Organosilicon polymers have received a great deal of attention because of their alternating arrangement in an organosilicon unit, π-electron system, and potential applications as advanced materials such as, ceramics precursor