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

Chiara Spagnoli; Katja Loos; Abraham Ulman; Mary K. Cowman

doi:10.1021/ja029721j

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

Chiara Spagnoli, Katja Loos, Abraham Ulman, Mary K. Cowman

Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English (US)
Pages (from-to)	7124-7128
Number of pages	5
Journal	Journal of the American Chemical Society
Volume	125
Issue number	23
DOIs	https://doi.org/10.1021/ja029721j
State	Published - Jun 11 2003

ASJC Scopus subject areas

Catalysis
General Chemistry
Biochemistry
Colloid and Surface Chemistry

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10.1021/ja029721j

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AU - Ulman, Abraham

AU - Cowman, Mary K.

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AB - 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.

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

Abstract

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