様々な嵩高い置換基を有するポリ(バラフェニレンビニレン)膜の合成とその気体透過性

概要

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The polymerizations of 2,5-bis(4-trimethylsilylphenyl)-I,4-bis(bromomethyl)benzene (1a), 2.5-bis(4-dimethyloctylsilylphenyl)-I,4-bis(bromomethyl)benzene (lb), and 2-[2,5-bis(2-ethy1hexyloxy]I,4-bis(bromomethyl)benzene (3c) were canied out with t-BuOK to give the corresponding poly (p-phenylenevinylene)s[PPVs](2a,2b, and 4c, respectively).The polymer(2a)was insoluble in any solvents, while the polymers (2b and 4c) were soluble in organic solvents.The weight-average molecular weights of 2b and 4c were as large as 316,800 and 256,500,respectively. The oxygen permeability coefficients (P02) of membranes of 2b and 4c were 12.0and 6.2 barrers, respectively. The oxygen penneability of 2b was almost the same as that of poly (2-dimethyloctysily1-p-phenylenevinylene) which is the known polymer. This indicates that phenyl groups of side chain induce the polymer chain packing although octylsilyl groups should increase gas permeability.
福井大学の論文
2010-03-31