TY - JOUR
T1 - Novel fluorinated hybrid polymer preparation from silsesquioxanes by radical polyaddition
AU - Fujiwara, Hirotada
AU - Narita, Tadashi
AU - Hamana, Hiroshi
N1 - Funding Information:
This work was financially supported in part by the High-Tech Research Center Program of Saitama Institute of Technology founded in 1999 by the support of the Ministry of Education, Culture, Sports, Science and Technology of Japan, which the authors are grateful.
PY - 2004/9
Y1 - 2004/9
N2 - Radical polyaddition of bis(α-trifluoromethyl-β, β-difluorovinyl) terephthalate [CF2= C(CF3)OCOC6H4COOC(CF3) =CF2] (BFP) with silsesquioxanes was investigated in order to produce a polymer possessing silsesquioxane moiety in polymer main chain. 1,3,5,7,9,11,13,15-octakis(dimethylsilyloxy) pentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane (T8S) with BFP successfully afforded a polymer bearing a molecular weight of about 2.5×105. The polymer obtained were soluble in usual organic solvent such as methanol, tetrahydrofuran and chloroform. In order to get some information on the polyaddition reaction mechanism, model reactions of 2-benzoxypentafluoropropene [CF2=C(CF3) OCOC6H5] (BPFP) with dimethylphenylsilane, [(CH3)2SiHC6H5], BPFP with 1,1,3,3-tetramethyldisiloxane {[(CH3)2SiH] 2O}, and BFP with dimethylphenylsilane were carried out. The mechanism that the radical abstracts a hydrogen from silane compounds followed by the addition of perfluoroisopropenyl groups was proposed.
AB - Radical polyaddition of bis(α-trifluoromethyl-β, β-difluorovinyl) terephthalate [CF2= C(CF3)OCOC6H4COOC(CF3) =CF2] (BFP) with silsesquioxanes was investigated in order to produce a polymer possessing silsesquioxane moiety in polymer main chain. 1,3,5,7,9,11,13,15-octakis(dimethylsilyloxy) pentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane (T8S) with BFP successfully afforded a polymer bearing a molecular weight of about 2.5×105. The polymer obtained were soluble in usual organic solvent such as methanol, tetrahydrofuran and chloroform. In order to get some information on the polyaddition reaction mechanism, model reactions of 2-benzoxypentafluoropropene [CF2=C(CF3) OCOC6H5] (BPFP) with dimethylphenylsilane, [(CH3)2SiHC6H5], BPFP with 1,1,3,3-tetramethyldisiloxane {[(CH3)2SiH] 2O}, and BFP with dimethylphenylsilane were carried out. The mechanism that the radical abstracts a hydrogen from silane compounds followed by the addition of perfluoroisopropenyl groups was proposed.
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U2 - 10.1016/j.jfluchem.2004.03.005
DO - 10.1016/j.jfluchem.2004.03.005
M3 - Article
AN - SCOPUS:4444308934
SN - 0022-1139
VL - 125
SP - 1279
EP - 1285
JO - Journal of Fluorine Chemistry
JF - Journal of Fluorine Chemistry
IS - 9
ER -