Please use this identifier to cite or link to this item: https://doi.org/10.1021/jp0561120
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dc.titleSynthesis of large-pore methylene-bridged periodic mesoporous organosilicas and its implications
dc.contributor.authorBao, X.Y.
dc.contributor.authorLi, X.
dc.contributor.authorZhao, X.S.
dc.date.accessioned2014-06-17T07:49:58Z
dc.date.available2014-06-17T07:49:58Z
dc.date.issued2006-02-16
dc.identifier.citationBao, X.Y., Li, X., Zhao, X.S. (2006-02-16). Synthesis of large-pore methylene-bridged periodic mesoporous organosilicas and its implications. Journal of Physical Chemistry B 110 (6) : 2656-2661. ScholarBank@NUS Repository. https://doi.org/10.1021/jp0561120
dc.identifier.issn15206106
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/64672
dc.description.abstractIn this article, we report the synthesis of methylene-bridged periodic mesoporous organosilicas (PMOs) of the SBA-15 type. The materials were characterized by SAXS, BET, NMR, FESEM, and TEM. It was found that the synthesis of methylene-bridged SBA-15 PMOs requires more rigorous conditions than that of SBA-15 PMOs bearing organic bridges other than methylene. A mild acidic environment, which slows down the hydrolysis and condensation rates of the precursor, with the assistance of a salt, which enhances precursor-template interaction, should be used to synthesize high-quality large-pore methylene-bridged PMOs. We attributed this to the fast hydrolysis and condensation rates and the rigid backbone of precursor 1,2-bis(triethoxysilyl) methylene. By examining and comparing the synthesis of three large-pore PMOs with different bridges, we concluded that the inductive, bridging, and conformation effects of the organic bridging group play an important role in the synthesis of large-pore PMO materials. © 2006 American Chemical Society.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1021/jp0561120
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentCHEMICAL & BIOMOLECULAR ENGINEERING
dc.description.doi10.1021/jp0561120
dc.description.sourcetitleJournal of Physical Chemistry B
dc.description.volume110
dc.description.issue6
dc.description.page2656-2661
dc.description.codenJPCBF
dc.identifier.isiut000235373400030
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