Periodic bifunctional organosilicas synthesised using cationic supramolecular templating

Ben A. Treuherz, Yaroslav Z. Khimyak

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10 Citations (Scopus)


Bifunctional periodic mesoporous organosilicas containing -CH2-CH2- and -CH{double bond, long}CH- bridges have been synthesised via direct synthesis using cationic surfactant templates. The mesoscopic ordering of the products was confirmed using powder X-ray diffraction and nitrogen adsorption. The local structure of mesocomposites was probed via 13C and 29Si solid-state NMR methods. The application of 1H-13C and 1H-29Si CP/MAS NMR dynamics revealed a complex structure of hybrid walls; organic bridges with different mobilities have been identified. The component with fast CP/MAS kinetics represents organic bridges in the bulk of the pore walls, while the component with slow CP/MAS NMR kinetics is attributable to the organic bridges on the hybrid wall interface. 1H-29Si CP/MAS dynamics also indicates that both bridges are incorporated into the same hybrid framework. The strength of template-framework interactions depends on the nature of incorporated organic bridges. Crown

Original languageEnglish
Pages (from-to)236-245
Number of pages10
JournalMicroporous and Mesoporous Materials
Issue number1-3
Early online date13 Mar 2007
Publication statusPublished - 1 Nov 2007
Externally publishedYes


  • Periodic mesoporous organosilica
  • Solid-state NMR

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