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Main Title: A small-angle neutron scattering environment for in-situ observation of chemical processes
Author(s): Hayward, Dominic W.
Chiappisi, Leonardo
Prévost, Sylvain
Schweins, Ralf
Gradzielski, Michael
Type: Article
Language Code: en
Abstract: A new sample environment for the observation of ongoing chemical reactions is introduced for small-angle neutron scattering (SANS) experiments which enables structural changes to be followed continuously across a wide Q-range in response to changes in the chemical environment. The approach is demonstrated and validated by performing single and multiple potentiometric titrations on an aqueous anionic surfactant solution (oligo-oxyethylene alkylether carboxylic acid in D2O) with addition times varying from 1s to 2h. It is shown that the continuous flow set-up offers considerable advantages over classical ‘static’ measurements with regards to sample throughput, compositional precision and the ability to observe fast structural transitions. Finally, the capabilities and ongoing optimisation of the sample environment are discussed with reference to potential applications in the fields of biology, colloidal systems and complex soft matter.
Issue Date: 8-May-2018
Date Available: 17-May-2018
DDC Class: 541 Physikalische Chemie
Subject(s): small-angle neutron scattering
in-situ observation
Sponsor/Funder: DFG, TH 662/19-1, Open Access Publizieren 2017 - 2018 / Technische Universität Berlin
Journal Title: Scientific Reports
Publisher: Nature Publishing Group
Publisher Place: London
Volume: 8
Article Number: 7299
Publisher DOI: 10.1038/s41598-018-24718-z
Page Start: 1
Page End: 11
ISSN: 2045-2322
Appears in Collections:FG Physikalische Chemie / Molekulare Materialwissenschaften » Publications

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