Imaging structured water and bound polysaccharide on mica surface at ambient temperature

被引:54
作者
Spagnoli, C [1 ]
Loos, K [1 ]
Ulman, A [1 ]
Cowman, MK [1 ]
机构
[1] Polytech Inst New York, Othmer Dept Chem & Biol Chem & Engn, Metrotech Ctr 6, Brooklyn, NY 11201 USA
关键词
D O I
10.1021/ja029721j
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The presence of a water layer on the surface of muscovite mica under ambient conditions is well established. The water molecules are well ordered and seem to be oriented, leading to an icelike monolayer (probably ferroelectric) in epitaxial relation with the mica surface. We have imaged and characterized the height and contact angle of ordered water layer(s) formed by wetting and de-wetting processes on mica surfaces at different states of hydration by tapping mode atomic force microscopy. Implications that the presence of such an ordered water layer may have for imaging of biological samples are also discussed, with consideration of data for the polysaccharide hyaluronan.
引用
收藏
页码:7124 / 7128
页数:5
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