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Updated: Jul 11, 2026

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
Published on: May 27, 2018
Structure of water incorporated in amphoteric polymer thin films as revealed by FT-IR spectroscopy
Hiromi Kitano1, Kyoko Nagaoka, Susumu Tada
1Department of Applied Chemistry, Graduate School of Science and Engineering, University of Toyama, Toyama, Japan. kitano@eng.u-toyama.ac.jp
Abstract:
The structure and hydrogen bonding of water incorporated in a thin film of amphoteric terpolymers composed of various ratios of MA, DMAPMA, and BMA were analyzed using the band shapes of the O--H stretching in the IR spectra. At an early stage of sorption of water, the IR spectrum for the water incorporated in the film with comparative contents of MA and DMAPMA residues was similar to that for free water. This is consistent with the tendency for zwitterionic polymers, but is in contrast with the drastic change in the IR spectrum of water incorporated in non-ionic polymer films such as polyBMA. These results suggest a correlation between the mildness of the charge-balanced polymers to the structure of incorporated water and their blood compatibilities.
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