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Direct synthesis and fluorescent imaging of bifunctionalized mesoporous iodopropyl-silica


Ramm, J H; Gartmann, N; Brühwiler, D (2010). Direct synthesis and fluorescent imaging of bifunctionalized mesoporous iodopropyl-silica. Journal of Colloid and Interface Science, 345(2):200-205.

Abstract

The co-condensation of 3-iodopropyltrimethoxysilane and tetraethoxysilane with an additional substituted trimethoxysilane (RTMS) in the presence of Pluronic P123 and hydrogen iodide yields bifunctionalized mesoporous silica. The pore size distribution of these materials depends on the nature of the RTMS additive. Excellent results in terms of a narrow pore size distribution were obtained with methyltrimethoxysilane. A particularly interesting bifunctionalized mesoporous material is formed by the co-inclusion of iodopropyl and aminopropyl moieties. The complementary reactivity of these two functional groups is demonstrated by the selective labeling of the amino-iodo-functionalized mesoporous silica with 2-hydroxy substituted nile red and fluorescein isothiocyanate, allowing further characterization of the functional group distribution by confocal laser scanning microscopy.

Abstract

The co-condensation of 3-iodopropyltrimethoxysilane and tetraethoxysilane with an additional substituted trimethoxysilane (RTMS) in the presence of Pluronic P123 and hydrogen iodide yields bifunctionalized mesoporous silica. The pore size distribution of these materials depends on the nature of the RTMS additive. Excellent results in terms of a narrow pore size distribution were obtained with methyltrimethoxysilane. A particularly interesting bifunctionalized mesoporous material is formed by the co-inclusion of iodopropyl and aminopropyl moieties. The complementary reactivity of these two functional groups is demonstrated by the selective labeling of the amino-iodo-functionalized mesoporous silica with 2-hydroxy substituted nile red and fluorescein isothiocyanate, allowing further characterization of the functional group distribution by confocal laser scanning microscopy.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Chemistry
Dewey Decimal Classification:540 Chemistry
Language:English
Date:May 2010
Deposited On:17 May 2010 12:42
Last Modified:07 Dec 2017 02:19
Publisher:Elsevier
ISSN:0021-9797
Publisher DOI:https://doi.org/10.1016/j.jcis.2010.01.070

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