Controlled growth of poly(2-(diethylamino)ethyl methacrylate) brushes via atom transfer radical polymerisation on planar silicon surfaces
Controlled growth of poly(2-(diethylamino)ethyl methacrylate) brushes via atom transfer radical polymerisation on planar silicon surfaces
复制标题
通过原子转移自由基聚合在平面硅表面上控制聚（2-（二乙基氨基）乙基甲基丙烯酸酯）刷的生长
DOI：
--
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
A. Ryan
中科院分区：
文献类型：
--
作者：
P. Topham;J. Howse;Colin J. Crook;A. J. Parnell;M. Geoghegan;Richard A. L. Jones;A. Ryan
报道了一系列不同接枝密度的pH响应型聚电解质刷的研究进展。在硅片上通过原子转移自由基聚合，采用“接枝自”方法合成了聚(2-(二乙氨基)甲基丙烯酸乙酯)聚合物刷。以[11-(2-溴-2-甲基)丙酰氧基]十一烷基三氯硅烷为引发剂，通过硅烷化反应在硅片上共价键合，在80℃的四氢呋喃中以氯化铜和五甲基二乙烯三胺为催化体系，在80℃下生长了刷子。用X射线反射率对引发剂表面进行了表征，确定了聚合物的接枝密度上限。用椭偏仪和原子力显微镜对电刷的质量进行了分析，并对其进行了讨论。
Progress in making pH-responsive polyelectrolyte brushes with a range of different grafting densities is reported. Polymer brushes of poly(2-(diethylamino)ethyl methacrylate) were synthesised via atom transfer radical polymerisation on silicon wafers using a 'grafted from' approach. The [11-(2-bromo-2-methyl) propionyloxy]undecyl trichlorosilane initiator was covalently attached to the silicon via silylation, from which the brushes were grown using a catalytic system of copper(I) chloride and pentamethyldiethylenetriamine in tetrahydrofuran at 80°C. X-ray reflectivity was used to assess the initiator surfaces and an upper limit on the grafting density of the polymer was determined. The quality of the brushes produced was analysed using ellipsometry and atomic force microscopy, which is also discussed.