Cation bridging studied by specular neutron reflection

Xiaofan Wang; Seung Yeon Lee; Kathryn Miller; Rebecca Welbourn; Isabella Stocker; Stuart Clarke; Michael Casford; Philipp Gutfreund; Maximilian W.A. Skoda

doi:10.1021/la400767u

Cation bridging studied by specular neutron reflection

Xiaofan Wang, Seung Yeon Lee, Kathryn Miller, Rebecca Welbourn, Isabella Stocker, Stuart Clarke^*, Michael Casford, Philipp Gutfreund, Maximilian W.A. Skoda

^*Corresponding author for this work

37 Citations (Scopus)

Abstract

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.

Original language	English
Journal	Langmuir
Volume	29
Issue number	18
Pages (from-to)	5520-5527
Number of pages	8
ISSN	0743-7463
DOIs	https://doi.org/10.1021/la400767u
Publication status	Published - 7 May 2013

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AU - Wang, Xiaofan

AU - Lee, Seung Yeon

AU - Miller, Kathryn

AU - Welbourn, Rebecca

AU - Stocker, Isabella

AU - Clarke, Stuart

AU - Casford, Michael

AU - Gutfreund, Philipp

AU - Skoda, Maximilian W.A.

PY - 2013/5/7

Y1 - 2013/5/7

N2 - 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.

AB - 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.

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Cation bridging studied by specular neutron reflection

Abstract

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