Framework functionalization of periodic mesoporous organosilica with 1,2-bis[3-(triethoxysilylpropyl)ureido] cyclohexane function via basic co-condensation self-assembly

Mohammad A Wahab; I Kim; C S Ha

doi:10.1166/jnn.2008.110

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Framework functionalization of periodic mesoporous organosilica with 1,2-bis[3-(triethoxysilylpropyl)ureido] cyclohexane function via basic co-condensation self-assembly

Journal article

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Framework functionalization of periodic mesoporous organosilica with 1,2-bis[3-(triethoxysilylpropyl)ureido] cyclohexane function via basic co-condensation self-assembly

Mohammad A Wahab, I Kim and C S Ha

Journal of Nanoscience and Nanotechnology, Vol.8(7), pp.3532-3538

2008

DOI: https://doi.org/10.1166/jnn.2008.110

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Abstract

The synthesized bis silylated long alkyl chain containing organosilicate precursor, 1,2-bis(3-(triethoxysilylpropyl)ureido)cyclohexane (BSPUCh) has been used as co-precursor with 1,2-bis (triethoxysilyl)ethane (BTSE) for the preparation of functional periodic mesoporous organosilicas (PMOs) via surfactant-mediated basic co-condensation self-assembly method. The various characterization techniques such as X-ray diffraction patterns (XRD), transmission electron microscope (TEM), N 2 adsorption-desorption isotherms (BET), FT-IR, and 13C and 29Si CPMAS NMR spectroscopies were used to characterize the resulting structure of functionalized PMO mesostructures. Results obtained from XRD, TEM, and BET analysis clearly showed that the structural and pore arrangement of the functionalized PMOs were found to be dependent on the used concentration of BSPUCh. The functional PMOs showed well ordered mesophases when BSPUCh concentration was ≤9 wt% in the initial mixtures, whereas higher concentration of the BSPUCh always produced disordered hierarchical mesostructures with bimodal pore size distributions. The incorporation of BSPUCh also reduces the surface area, pore volume, pore size, and pore wall thickness of the functionalized nanostructures, indicating that the BSPUCh is incorporated in the pore channels of the PMOs. The solid-state 13C and 29Si NMR spectra showed that the BSPUCh organosilicate with non-hydrolyzable bridging ligands propylureidocyclohexane has been successfully covalently linked in the framework of the resulting functional PMOs. Copyright © 2008 American Scientific Publishers All rights reserved.

Details

Title: Framework functionalization of periodic mesoporous organosilica with 1,2-bis[3-(triethoxysilylpropyl)ureido] cyclohexane function via basic co-condensation self-assembly
Authors: Mohammad A Wahab (Author)
I Kim (Author)
C S Ha (Author)
Publication details: Journal of Nanoscience and Nanotechnology, Vol.8(7), pp.3532-3538
Publisher: American Scientific Publishers
Date published: 2008
DOI: 10.1166/jnn.2008.110
ISSN: 1533-4880
Organisation Unit: University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99451293702621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Chemistry, Multidisciplinary; Materials Science, Multidisciplinary; Nanoscience & Nanotechnology; Physics, Applied; Physics, Condensed Matter