Is their potential for post-synthetic brominating reactions on benzene bridged PMOs?

Smeulders, Geert; Meynen, Vera; Houthoofd, Kristof; Mullens, Steven; Martens, Johan A.; Maes, Bert U. W.; Cool, Pegie

doi:10.1016/j.micromeso.2012.06.033

Cited by 5 publications

(3 citation statements)

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“…Moreover, by performing NMR analysis of the final product one can provide an indepth view of the chemical stability before and after modification. As described by Smeulders et al [33], assessment of the chemical linkages between the organic bridging units is of pivotal importance. Figure 7 shows the 1 H- 29 Si CPMAS NMR spectra of benzene bridged and bromobenzene bridged PMO.…”

Section: Resultsmentioning

confidence: 99%

“…Organic synthesis on PMOs is, however, not so straight-forward. As described in literature by Smeulders et al [33], structural changes may occur due to unwanted side reactions. In this article, three different strategies for bromination of benzene bridged PMO are investigated: 1) Br 2 with AlCl 3 as catalyst, 2) Nbromosuccinimide (NBS) with azobisisobutyronitrile (AIBN) as radical initiator, and 3) NaBrO 3 in combination with H 2 SO 4 in order to create in situ generation of bromine.…”

Section: Introductionmentioning

confidence: 89%

“…". The authors conclude that, at that time, only pre-synthesized precursors can result in the desired brominated benzene bridged PMOs [33]. Bromobenzene bridged PMOs are susceptible for further chemical modification, because of the halogen-carbon bond.…”

Section: Introductionmentioning

confidence: 99%

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Post-synthesis bromination of benzene bridged PMO as a way to create a high potential hybrid material

Huybrechts

Mali

Kuśtrowski

et al. 2016

Microporous and Mesoporous Materials

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Periodic mesoporous organosilicas provide the best of two worlds: the strength and porosity of an inorganic framework combined with the infinite possibilities created by the organic bridging unit. In this work we focus on post-synthetical modification of benzene bridged PMO, in order to create bromobenzene PMO. In the past, this proved to be very challenging due to unwanted structural deterioration. However, now we have found a way to brominate this material whilst keeping the structure intact. In-depth structural analysis by solid state NMR and XPS shows both vast progress over previous attempts as well as potential for improvement.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 89%