Surface plasmon optical studies of carboxymethyl dextran brushes versus networks

被引：13
|
作者：
Xu, F
Persson, B
Löfås, S
Knoll, W
机构：
[1] Max Planck Inst Polymer Res, D-55128 Mainz, Germany
[2] Biacore AB, SE-75450 Uppsala, Sweden
来源：
LANGMUIR | 2006年 / 22卷 / 07期
关键词：
D O I：
10.1021/la052964f
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The conformational changes of carboxymethyl dextran (CMD) substrates induced by variations in pH and ionic strength were studied using surface plasmon field-enhanced fluorescence spectroscopy (SPFS). A typical response was an increase in swelling upon increasing the pH and decreasing the ionic strength. Furthermore, the effects of the surface charge and cross-link density of the CMD on the degree of stimulus responses were investigated. The swelling/ collapse ratio decreased with decreasing carboxyl group surface concentration and increasing cross-link density.
引用
收藏
页码：3352 / 3357
页数：6
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