Title

Electrochemical and spectroscopic characterization of organic compound uptake in silica core-shell nanocapsules

Document Type

Article

Publication Date

10-10-2006

Abstract

Oil-filled silica nanocapsules consisting of a hydrophobic liquid core and a silicate shell have been shown to efficiently extract hydrophobic compounds from aqueous media. With a view toward quantifying the selectivity of these systems, a series of electrochemical and spectroscopic measurements was performed. Uptake and kinetics experiments were carried out through electrochemical measurements by using solutions of lipophilic electroactive molecules of different sizes and with different affinities for silica. Other solutions with fluorescent probes were used for spectrophotometry measurements. In this work we report the environment where the lipophilic compounds studied end up after absorption and the kinetics of their uptake by the oil-filled silica nanocapsules with different shell thicknesses. © 2006 American Chemical Society.

Publication Source (Journal or Book title)

Langmuir

First Page

8684

Last Page

8689

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