title: Enhancement of the Hydrogen-Bonding Network of Water Confined in a Polyelectrolyte Brush.
abstract: Water existing in the vicinity of polyelectrolytes exhibits unique structural properties, which demonstrate key roles in chemistry, biology, and geoscience. In this study, X-ray absorption and emission spectroscopy was employed to observe the local hydrogen-bonding structure of water confined in a charged polyelectrolyte brush. Even at room temperature, a majority of the water molecules confined in the polyelectrolyte brush exhibited one type of hydrogen-bonding configuration: a slightly distorted, albeit ordered, configuration. The findings from this study provide new insight in terms of the correlation between the function and local structure of water at the interface of biological materials under physiological conditions.
authors.affiliation: Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo , 5-1-5, Kashiwanoha, Kashiwa-shi, Chiba 277-8561, Japan.
authors.forename: Kosuke
authors.initials: K
authors.lastname: Yamazoe
authors.forename: Yuji
authors.initials: Y
authors.lastname: Higaki
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Inutsuka
authors.affiliation: Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo , 5-1-5, Kashiwanoha, Kashiwa-shi, Chiba 277-8561, Japan.|Institute for Solid State Physics, The University of Tokyo , 5-1-5, Kashiwanoha, Kashiwa-shi, Chiba 277-0882, Japan.|Synchrotron Radiation Research Organization, The University of Tokyo , 1-490-2, Kouto, Shingu-cho, Tatsuno, Hyogo 679-5165, Japan.
authors.forename: Jun
authors.initials: J
authors.lastname: Miyawaki
authors.affiliation: Synchrotron Radiation Research Organization, The University of Tokyo , 1-490-2, Kouto, Shingu-cho, Tatsuno, Hyogo 679-5165, Japan.
authors.forename: Yi-Tao
authors.identifier: 0000-0001-7104-0059
authors.initials: YT
authors.lastname: Cui
authors.forename: Atsushi
authors.initials: A
authors.lastname: Takahara
authors.affiliation: Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo , 5-1-5, Kashiwanoha, Kashiwa-shi, Chiba 277-8561, Japan.|Institute for Solid State Physics, The University of Tokyo , 5-1-5, Kashiwanoha, Kashiwa-shi, Chiba 277-0882, Japan.|Synchrotron Radiation Research Organization, The University of Tokyo , 1-490-2, Kouto, Shingu-cho, Tatsuno, Hyogo 679-5165, Japan.
authors.forename: Yoshihisa
authors.identifier: 0000-0002-4590-9109
authors.initials: Y
authors.lastname: Harada