Simple thiol-ene click chemistry modification of SBA-15 silica pores with carboxylic acids
A straightforward approach for anchoring tailored carboxylic groups in mesoporous SiO<inf>2</inf> colloidal materials is presented. The thiol-ene photochemical reaction between vinyltrimethoxysilane precursors and various thiocarboxylic acids which has, click chemistry features (i.e. hig...
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todo:paper_00219797_v450_n_p316_Bordoni2023-10-03T14:25:15Z Simple thiol-ene click chemistry modification of SBA-15 silica pores with carboxylic acids Bordoni, A.V. Lombardo, M.V. Regazzoni, A.E. Soler-Illia, G.J.A.A. Wolosiuk, A. Carboxylic groups Click chemistry Functionalized SiO<inf>2</inf> Mesostructured materials SBA-15 Thiol-ene addition Energy dispersive spectroscopy Fourier transform infrared spectroscopy Infrared spectroscopy Mesoporous materials Photochemical reactions Scanning electron microscopy Silica Synthesis (chemical) X ray scattering X ray spectroscopy Carboxylic group Click chemistry Functionalized Mesostructured materials SBA-15 Thiol-ene additions Functional groups carboxylic acid copper functional group oxygen silane silane derivative silicon dioxide succinic acid thiol derivative thiol ene unclassified drug undecanoic acid acid base balance adsorption Article carboxylation chemical modification chemical reaction kinetics chemical structure click chemistry colloid field emission scanning electron microscopy immobilization infrared spectrometry photochemistry porosity precursor priority journal roentgen spectroscopy surface property synthesis X ray crystallography zeta potential A straightforward approach for anchoring tailored carboxylic groups in mesoporous SiO<inf>2</inf> colloidal materials is presented. The thiol-ene photochemical reaction between vinyltrimethoxysilane precursors and various thiocarboxylic acids which has, click chemistry features (i.e. high conversion yields, insensitivity to oxygen, mild reaction conditions), results in carboxylated silane precursors that can be readily used as surface modifiers. The carboxylic groups of acetic, undecanoic and succinic acid were immobilized on the silica mesopore walls of SBA-15 powders employing the synthesized silane precursors. Post-grafting has been confirmed through infrared spectrometry (FTIR), energy dispersive X-ray spectroscopy (EDS), elemental analysis (EA) and zeta potential measurements. Detailed field-emission gun scanning electron microscopy (FESEM) images and small angle X-ray scattering (SAXS) data revealed parallel mesopores and ordered mesostructures. It is shown that the immobilized COOH groups are chemically accessible for acid-base reactions as well as copper adsorption. Immobilization of easily synthesized tailored carboxylic modified alkoxide precursors within mesoporous systems provides a unique chemical nanoenvironment within these ordered frameworks. © 2015 Elsevier Inc. Fil:Bordoni, A.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Soler-Illia, G.J.A.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00219797_v450_n_p316_Bordoni |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Carboxylic groups Click chemistry Functionalized SiO<inf>2</inf> Mesostructured materials SBA-15 Thiol-ene addition Energy dispersive spectroscopy Fourier transform infrared spectroscopy Infrared spectroscopy Mesoporous materials Photochemical reactions Scanning electron microscopy Silica Synthesis (chemical) X ray scattering X ray spectroscopy Carboxylic group Click chemistry Functionalized Mesostructured materials SBA-15 Thiol-ene additions Functional groups carboxylic acid copper functional group oxygen silane silane derivative silicon dioxide succinic acid thiol derivative thiol ene unclassified drug undecanoic acid acid base balance adsorption Article carboxylation chemical modification chemical reaction kinetics chemical structure click chemistry colloid field emission scanning electron microscopy immobilization infrared spectrometry photochemistry porosity precursor priority journal roentgen spectroscopy surface property synthesis X ray crystallography zeta potential |
| spellingShingle |
Carboxylic groups Click chemistry Functionalized SiO<inf>2</inf> Mesostructured materials SBA-15 Thiol-ene addition Energy dispersive spectroscopy Fourier transform infrared spectroscopy Infrared spectroscopy Mesoporous materials Photochemical reactions Scanning electron microscopy Silica Synthesis (chemical) X ray scattering X ray spectroscopy Carboxylic group Click chemistry Functionalized Mesostructured materials SBA-15 Thiol-ene additions Functional groups carboxylic acid copper functional group oxygen silane silane derivative silicon dioxide succinic acid thiol derivative thiol ene unclassified drug undecanoic acid acid base balance adsorption Article carboxylation chemical modification chemical reaction kinetics chemical structure click chemistry colloid field emission scanning electron microscopy immobilization infrared spectrometry photochemistry porosity precursor priority journal roentgen spectroscopy surface property synthesis X ray crystallography zeta potential Bordoni, A.V. Lombardo, M.V. Regazzoni, A.E. Soler-Illia, G.J.A.A. Wolosiuk, A. Simple thiol-ene click chemistry modification of SBA-15 silica pores with carboxylic acids |
| topic_facet |
Carboxylic groups Click chemistry Functionalized SiO<inf>2</inf> Mesostructured materials SBA-15 Thiol-ene addition Energy dispersive spectroscopy Fourier transform infrared spectroscopy Infrared spectroscopy Mesoporous materials Photochemical reactions Scanning electron microscopy Silica Synthesis (chemical) X ray scattering X ray spectroscopy Carboxylic group Click chemistry Functionalized Mesostructured materials SBA-15 Thiol-ene additions Functional groups carboxylic acid copper functional group oxygen silane silane derivative silicon dioxide succinic acid thiol derivative thiol ene unclassified drug undecanoic acid acid base balance adsorption Article carboxylation chemical modification chemical reaction kinetics chemical structure click chemistry colloid field emission scanning electron microscopy immobilization infrared spectrometry photochemistry porosity precursor priority journal roentgen spectroscopy surface property synthesis X ray crystallography zeta potential |
| description |
A straightforward approach for anchoring tailored carboxylic groups in mesoporous SiO<inf>2</inf> colloidal materials is presented. The thiol-ene photochemical reaction between vinyltrimethoxysilane precursors and various thiocarboxylic acids which has, click chemistry features (i.e. high conversion yields, insensitivity to oxygen, mild reaction conditions), results in carboxylated silane precursors that can be readily used as surface modifiers. The carboxylic groups of acetic, undecanoic and succinic acid were immobilized on the silica mesopore walls of SBA-15 powders employing the synthesized silane precursors. Post-grafting has been confirmed through infrared spectrometry (FTIR), energy dispersive X-ray spectroscopy (EDS), elemental analysis (EA) and zeta potential measurements. Detailed field-emission gun scanning electron microscopy (FESEM) images and small angle X-ray scattering (SAXS) data revealed parallel mesopores and ordered mesostructures. It is shown that the immobilized COOH groups are chemically accessible for acid-base reactions as well as copper adsorption. Immobilization of easily synthesized tailored carboxylic modified alkoxide precursors within mesoporous systems provides a unique chemical nanoenvironment within these ordered frameworks. © 2015 Elsevier Inc. |
| format |
JOUR |
| author |
Bordoni, A.V. Lombardo, M.V. Regazzoni, A.E. Soler-Illia, G.J.A.A. Wolosiuk, A. |
| author_facet |
Bordoni, A.V. Lombardo, M.V. Regazzoni, A.E. Soler-Illia, G.J.A.A. Wolosiuk, A. |
| author_sort |
Bordoni, A.V. |
| title |
Simple thiol-ene click chemistry modification of SBA-15 silica pores with carboxylic acids |
| title_short |
Simple thiol-ene click chemistry modification of SBA-15 silica pores with carboxylic acids |
| title_full |
Simple thiol-ene click chemistry modification of SBA-15 silica pores with carboxylic acids |
| title_fullStr |
Simple thiol-ene click chemistry modification of SBA-15 silica pores with carboxylic acids |
| title_full_unstemmed |
Simple thiol-ene click chemistry modification of SBA-15 silica pores with carboxylic acids |
| title_sort |
simple thiol-ene click chemistry modification of sba-15 silica pores with carboxylic acids |
| url |
http://hdl.handle.net/20.500.12110/paper_00219797_v450_n_p316_Bordoni |
| work_keys_str_mv |
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| _version_ |
1807322924453986304 |