Aniline incorporated silica nanobubbles

Rosemary, M.J., Suryanarayanan, V., MacLaren, I. and Pradeep, T. (2006) Aniline incorporated silica nanobubbles. Journal of Chemical Sciences, 118(5), pp. 375-384. (doi: 10.1007/BF02711447)

Abstract

We report the synthesis of stearate functionalized nanobubbles of SiO₂ with a few aniline molecules inside, represented as C₆H₅NH₂@SiO₂@stearate, exhibiting fluorescence with red-shifted emission. Stearic acid functionalization allows the materials to be handled just as free molecules, for dissolution, precipitation, storage etc. The methodology adopted involves adsorption of aniline on the surface of gold nanoparticles with subsequent growth of a silica shell through monolayers, followed by the selective removal of the metal core either using sodium cyanide or by a new reaction involving halocarbons. The material is stable and can be stored for extended periods without loss of fluorescence. Spectroscopic and voltammetric properties of the system were studied in order to understand the interaction of aniline with the shell as well as the monolayer, whilst transmission electron microscopy has been used to study the silica shell.

• Item Type: Articles
• Additional Information: The original publication is available at www.springerlink.com Working title: Functionalized, fluorescent and pH sensing nanobubbles
• Keywords: Silica nanoshells, aniline, core-shell particles, spectroscopic studies, transmission electron microscopy, carbon onions.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: MacLaren, Dr Ian
• Authors: Rosemary, M.J., Suryanarayanan, V., MacLaren, I., and Pradeep, T.
• Subjects: Q Science > QD Chemistry
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Journal of Chemical Sciences
• Publisher: Springer
• ISSN: 0253-4134
• Copyright Holders: Copyright © 2006 Springer
• First Published: First published in Journal of Chemical Sciences 118(5):375-384
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher.