Periodic mesoporous organosilicas with organic groups inside the channel walls

Teddy Asefa, Mark J. MacLachlan, Nell Coombs, Geoffrey A. Ozin

Research output: Contribution to journalArticle

1533 Citations (Scopus)

Abstract

Surfactant-mediated synthesis methods have attracted much interest for the production of inorganic mesoporous materials, which can, on removal of the surfactant template, incorporate polymeric, organic, inorganic and organometallic 'guests' in their pores. These materials - initially made of silica, but now also available in the form of other oxides, sulphides, phosphates and metals - could find application in fields ranging from catalysis, adsorption and sensing technology to nanoelectronics. The extension of surfactant-mediated synthesis to produce inorganic-organic hybrid material (that is, materials that contain organic groups as an integral part of their framework structure) promises access to an even wider range of application possibilities. Such hybrid materials have been produced in the form of amorphous silicates (xerogels) that indeed display unique properties different to those of the individual components, but their random networks with broad pore-size distributions severely limit the shape and size selectivity of these materials. Mesoporous hybrid materials with periodic frameworks have been synthesized, but the organic groups are all terminally bonded to the pore surface, rather than incorporated into the pore walls. Here we describe a periodic mesoporous organosilica containing bridge-bonded ethene groups directly integrated into the silica framework. We are able to solvent-extract and ion-exchange the surfactant templates to create a stable and periodic mesoporous ethenesilica with high surface area and ethene groups that are readily accessible for chemical reaction. Recent syntheses of similar periodic mesoporous organosilicas and the ability to incorporate a variety of bridging organic and organometallic species raise the prospect of being able to fuse organic synthesis and inorganic materials chemistry to generate new materials with interesting chemical, mechanical electronic, optical and magnetic properties.

Original languageEnglish
Pages (from-to)867-871
Number of pages5
JournalNature
Volume402
Issue number6764
DOIs
Publication statusPublished - Dec 23 1999

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Surface-Active Agents
Hybrid materials
Mesoporous materials
Organometallics
Silicon Dioxide
Silicates
Xerogels
Nanoelectronics
Sulfides
Electric fuses
Electronic properties
Oxides
Catalysis
Pore size
Chemical reactions
Magnetic properties
Ion exchange
Optical properties
Metals
Phosphates

ASJC Scopus subject areas

  • General

Cite this

Periodic mesoporous organosilicas with organic groups inside the channel walls. / Asefa, Teddy; MacLachlan, Mark J.; Coombs, Nell; Ozin, Geoffrey A.

In: Nature, Vol. 402, No. 6764, 23.12.1999, p. 867-871.

Research output: Contribution to journalArticle

Asefa, T, MacLachlan, MJ, Coombs, N & Ozin, GA 1999, 'Periodic mesoporous organosilicas with organic groups inside the channel walls', Nature, vol. 402, no. 6764, pp. 867-871. https://doi.org/10.1038/47229
Asefa, Teddy ; MacLachlan, Mark J. ; Coombs, Nell ; Ozin, Geoffrey A. / Periodic mesoporous organosilicas with organic groups inside the channel walls. In: Nature. 1999 ; Vol. 402, No. 6764. pp. 867-871.
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