Clickable SBA-15 mesoporous materials: synthesis, characterization and their reaction with alkynes
Title | Clickable SBA-15 mesoporous materials: synthesis, characterization and their reaction with alkynes |
Publication Type | Journal Article |
Year of Publication | 2009 |
Authors | Malvi, B, Sarkar, BR, Pati, D, Mathew, R, Ajithkumar, TG, Gupta, SSen |
Journal | Journal of Materials Chemistry |
Volume | 19 |
Issue | 10 |
Pagination | 1409-1416 |
Date Published | JAN |
Type of Article | Article |
ISSN | 0959-9428 |
Abstract | SBA-15 mesoporous silica has been functionalized with azidopropyl groups through both one-pot co-condensation and post-synthetic grafting. For both these methodologies, azidopropyltriethoxysilane was used to introduce the azidopropyl groups. The azidopropyl modified SBA-15 material synthesized by one-pot co-condensation had hexagonal crystallographic order, pore diameters up of 50 angstrom, and the content of azidopropyl groups was found to be 1.3 mmol g(-1). The presence of the azidopropyl group was confirmed by multinuclear ((13)C, (29)Si) solid state NMR and IR spectroscopy. Both these materials underwent very efficient Cu(I)-catalyzed azide alkyne ``click'' reaction (CuAAC) with a variety of alkynes. Nearly 85% of the azide present in the SBA-15 material was converted to the corresponding triazole when propargyl alcohol was used as the substrate. This methodology was also used to incorporate mannose into SBA-15. Incubation of this mannose labeled SBA-15 with fluorescein labeled Concanavalin-A led to the formation of a fluorescent silica-protein hybrid material. The ease of synthesis for the azide labeled SBA-15 material together with its ability to undergo very efficient chemoselective CuAAC in water would make it a very attractive platform for the development of covalently anchored catalysts, enzymes and sensors. |
DOI | 10.1039/b815350g |
Type of Journal (Indian or Foreign) | Foreign |
Impact Factor (IF) | 5.099 |