Open AccessCation Bridging Studied by Specular Neutron Reflection
Author(s) -
Xiaofan Wang,
Seung Yeon Lee,
Kathy Miller,
Rebecca J. L. Welbourn,
Isabella N. Stocker,
Stuart M. Clarke,
Michael T. L. Casford,
Philipp Gutfreund,
Maximilian W. A. Skoda
Publication year - 2013
Publication title -
langmuir
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.042
H-Index - 333
eISSN - 1520-5827
pISSN - 0743-7463
DOI - 10.1021/la400767u
Subject(s) - specular reflection , attenuated total reflection , chemistry , pulmonary surfactant , divalent , adsorption , ion , reflection (computer programming) , infrared spectroscopy , neutron reflectometry , neutron scattering , neutron , spectroscopy , inorganic chemistry , small angle neutron scattering , optics , organic chemistry , biochemistry , physics , quantum mechanics , computer science , programming language
The binding of an anionic surfactant onto an anionic surface by addition of divalent ions is reported based on experimental data from specular neutron reflection (NR) and attenuated total internal reflection IR spectroscopy (ATR-IR). Similar measurements using monovalent ions (sodium) do not show any evidence of such adsorption, even though the amount of surfactant can be much higher. This data is interpreted in terms of the so-called bridging mechanism of ion binding.