Direct synthesis of sulfonic acid-functionalized periodic mesoporous benzene-silicas with large pores

Eun Bum Cho; Dukjoon Kim

doi:10.1016/j.jpcs.2007.10.029

Direct synthesis of sulfonic acid-functionalized periodic mesoporous benzene-silicas with large pores

Eun Bum Cho, Dukjoon Kim

Dept. of Fine Chemistry

Sungkyunkwan University

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Periodic mesoporous benzene-silicas containing sulfonic acid groups were directly synthesized by the co-condensation of 1,4-bis (triethoxysilyl) benzene organosilica precursor and 3-mercaptopropyltrimethoxysilane (MeO)₃Si(CH₂)₃SH in the presence of H₂O₂ using non-ionic block copolymer templates such as a Pluronic P123 (EO₂₀PO₇₀EO₂₀) and poly(ethylene oxide)-poly(dl-lactic acid-co-glycolic acid)-poly(ethylene oxide) (EO₁₆(L₂₉G₇)EO₁₆) under low acidic conditions. The sulfonic acid functional groups (-SO₃H) were generated in situ by the oxidation of the propylthiol using H₂O₂ as an oxidant during the sol-gel synthetic process, which was observed by FT-IR and solid-state ¹³C NMR spectroscopy. Well-defined 2D hexagonal (p6mm) mesostructures were also observed using BET, TEM, and SAXS measurements. The sulfonated mesoporous benzene-silicas prepared in this study also exhibit spherical macrostructures with diameters of 2-5 μm.

Original language	English
Pages (from-to)	1142-1146
Number of pages	5
Journal	Journal of Physics and Chemistry of Solids
Volume	69
Issue number	5-6
DOIs	https://doi.org/10.1016/j.jpcs.2007.10.029
State	Published - May 2008

Keywords

A. Nanostructures
A. Non-crystalline materials
A. Surfaces
B. Sol-gel growth
D. Microstructure

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10.1016/j.jpcs.2007.10.029

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title = "Direct synthesis of sulfonic acid-functionalized periodic mesoporous benzene-silicas with large pores",

abstract = "Periodic mesoporous benzene-silicas containing sulfonic acid groups were directly synthesized by the co-condensation of 1,4-bis (triethoxysilyl) benzene organosilica precursor and 3-mercaptopropyltrimethoxysilane (MeO)3Si(CH2)3SH in the presence of H2O2 using non-ionic block copolymer templates such as a Pluronic P123 (EO20PO70EO20) and poly(ethylene oxide)-poly(dl-lactic acid-co-glycolic acid)-poly(ethylene oxide) (EO16(L29G7)EO16) under low acidic conditions. The sulfonic acid functional groups (-SO3H) were generated in situ by the oxidation of the propylthiol using H2O2 as an oxidant during the sol-gel synthetic process, which was observed by FT-IR and solid-state 13C NMR spectroscopy. Well-defined 2D hexagonal (p6mm) mesostructures were also observed using BET, TEM, and SAXS measurements. The sulfonated mesoporous benzene-silicas prepared in this study also exhibit spherical macrostructures with diameters of 2-5 μm.",

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AU - Cho, Eun Bum

AU - Kim, Dukjoon

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AB - Periodic mesoporous benzene-silicas containing sulfonic acid groups were directly synthesized by the co-condensation of 1,4-bis (triethoxysilyl) benzene organosilica precursor and 3-mercaptopropyltrimethoxysilane (MeO)3Si(CH2)3SH in the presence of H2O2 using non-ionic block copolymer templates such as a Pluronic P123 (EO20PO70EO20) and poly(ethylene oxide)-poly(dl-lactic acid-co-glycolic acid)-poly(ethylene oxide) (EO16(L29G7)EO16) under low acidic conditions. The sulfonic acid functional groups (-SO3H) were generated in situ by the oxidation of the propylthiol using H2O2 as an oxidant during the sol-gel synthetic process, which was observed by FT-IR and solid-state 13C NMR spectroscopy. Well-defined 2D hexagonal (p6mm) mesostructures were also observed using BET, TEM, and SAXS measurements. The sulfonated mesoporous benzene-silicas prepared in this study also exhibit spherical macrostructures with diameters of 2-5 μm.

KW - A. Nanostructures

KW - A. Non-crystalline materials

KW - A. Surfaces

KW - B. Sol-gel growth

KW - D. Microstructure

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ER -

Direct synthesis of sulfonic acid-functionalized periodic mesoporous benzene-silicas with large pores

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Keywords

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