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Interfacial Binding of Divalent Cations to Calixarene-Based Langmuir Monolayers

TitleInterfacial Binding of Divalent Cations to Calixarene-Based Langmuir Monolayers
Publication TypeJournal Article
Year of Publication2015
AuthorsTulli, LG, Wang, WJ, Lindemann, WR, Kuzmenko, I, Meier, W, Vaknin, D, Shahgaldian, P
Date Published03
Type of ArticleArticle
ISBN Number0743-7463
Accession NumberWOS:000350611300013
Keywordsacid, agents, air/water interface, anion, complexation, diffraction, films, ligands, metal-ions, Spectroscopy

nvestigated by means of synchrotron radiation-based X-ray reflectivity (XRR), X-ray near-total-reflection fluorescence (XNTRF), and grazing incidence X-ray diffraction (GIXD). XNTRF and XRR analyses revealed that the monolayer of 1 binds more strongly to Cu2+ than Co2+ ions. In the presence of relatively high concentrations of Cu2+ ions in the subphase (1.4 x 10(-3) M), XNTRF exhibited anomalous depth profile behavior and GIXD measurements showed considerably strong diffuse scattering. Both measurements suggest the formation of Cu2+ clusters contiguous to the monolayer of 1.

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