Free-standing membranes via covalent cross-linking of polyelectrolyte multilayers with complementary reactivity.
Free-standing membranes via covalent cross-linking of polyelectrolyte multilayers with complementary reactivity.
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通过具有互补反应性的聚电解质多层共价交联形成独立式膜
DOI：
10.1021/la1035882
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
A. Laschewsky
中科院分区：
文献类型：
--
作者：
P. Ott;K. Trenkenschuh;J. Gensel;A. Fery;A. Laschewsky
Polyelectrolyte multilayers were prepared by the layer-by-layer (LbL) technique from polyanions bearing aldehyde and polycations with 4-methylpyridinium moieties. The aldol reaction of these complementary reactive groups can be followed by the formation of fluorescent merocyanine dyes, resulting in cross-linked, ultrathin polymer films. The efficient stabilization of the polymer films allows for their intact removal from high surface energy supports, such as glass or surface oxidized silicon wafers, by simple treatment with salt solutions, yielding free-standing membranes. Increasing separation of the reactive polycation and polyanion layers with layers of inert polycation and polyanion analogues only gradually prevents the coupling reaction. From this dependence, polyions assembled in consecutive adsorption layers seem to be able to penetrate into as far as three neighboring layers.
DOI：
10.1002/3527600574.ch7
发表时间：
2003
影响因子：
24.7
作者：
K. Glinel;A. Jonas;A. Laschewsky;P. Vuillaume
通讯作者：
P. Vuillaume