Synthesis of poly(phenylacetylene)-based polydendrons consisting of a phenyleneethynylene repeating unit, and oxygen/nitrogen permeation behavior of their membranes
Synthesis of poly(phenylacetylene)-based polydendrons consisting of a phenyleneethynylene repeating unit, and oxygen/nitrogen permeation behavior of their membranes
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DOI：
10.1016/j.memsci.2005.11.023
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发表时间：
2006-07-05
影响因子：
9.5
通讯作者：
Aoki, Toshiki
中科院分区：
文献类型：
--
作者：
Kaneko, Takashi;Yamamoto, Kazuto;Aoki, Toshiki
采用收敛法合成了由间位连接的亚苯基亚乙炔基重复单元和三甲基硅烷基、五甲基二丙基和九甲基四丙基组成的单树枝状分子。在铑催化剂作用下，以末端乙炔为中心的单枝晶发生聚合反应，得到相应的高分子量多枝晶。聚树枝状分子在普通有机溶剂中可溶，易成膜。氧渗透选择性提高了空间持久的树枝状人群的polydendrons。结果表明，树枝状和棒状结构的多枝晶分子是有效的选择性膜。氧渗透选择性增加与三甲基甲硅烷基相比，相应的零代聚（苯乙炔）衍生物的polydendrons。(c)2005 Elsevier B.V.保留所有权利。
Monodendrons consisting of m-linked phenyleneethynylene repeating unit with trimethylsilyl-, pentamethyldisiloxanyl- and nonamethyltetrasiloxanyl-peripheral groups were synthesized using the convergent approach. The focal point of monodendrons, terminal acetylene, was polymerized with rhodium catalyst to yield corresponding polydendrons with a high molecular weight. The polydendrons were solubile in common organic solvents, and readily formed membranes. Oxygen permselectivity was improved in the polydendrons with a space-persistent dendritic crowd. It was found that the well-defined dendritic and rod-like structure of the polydendrons was useful for pemselective membrane. Oxygen permselectivity was increased in polydendrons with a trimethylsilyl group compared to the corresponding zero generation poly(phenylacetylene) derivatives. (c) 2005 Elsevier B.V. All rights reserved.