Host–Guest Complexation of a Pyrogallol[4]arene Derivative at the Air–Water Interface

The host–guest properties of acetylated aryl pyrogallol[4]­arene (AcPy) were studied as a Langmuir monolayer at the air–water interface. The self-assembled Langmuir monolayer properties and interactions with monovalent and divalent metal cations were investigated using surface pressure– and surface...

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Bibliographic Details
Published in:Langmuir 2015-02, Vol.31 (4), p.1368-1375
Main Authors: Waidely, Eric, Pumilia, Cyrus, Malagon, Andres, Vargas, Edgar F, Li, Shanghao, Leblanc, Roger M
Format: Article
Language:English
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Summary:The host–guest properties of acetylated aryl pyrogallol[4]­arene (AcPy) were studied as a Langmuir monolayer at the air–water interface. The self-assembled Langmuir monolayer properties and interactions with monovalent and divalent metal cations were investigated using surface pressure– and surface potential–area isotherms, compression–decompression cycles, stability, and infrared reflection–absorption spectroscopy (IRRAS). A favorable interaction is observed for complexation between acetylated aryl pyrogallol[4]­arene with divalent calcium and cadmium cations, while no interaction is observed for monovalent sodium and potassium cations. Spectroscopic techniques allow for discrimination between cadmium and calcium complexation.
ISSN:0743-7463
1520-5827
DOI:10.1021/la504841u