Synthesis of Periodic Mesoporous Organosilicas with Block Copolymer Templates

Burleigh, Mark C.; Markowitz, Michael A.; Wong, Eva M.; Lin, J. S.; Gaber, Bruce P.

doi:10.1021/cm010852d

Cited by 102 publications

(91 citation statements)

References 10 publications

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“…Likewise, Burleigh et al were able to enlarge the pore sizes ranging from 6 to 20 nm using the same triblock copolymer surfactant along with a trimethylbenzene micelle-swelling agent under acidic conditions. 34 Using B50-6600 (EO 39 BO 47 EO 39 ) triblock copolymer surfactant and the BTEE precursor under acidic conditions, the well-ordered periodic mesoporous organosilica with large cage-like pores, whose diameter was ca. 12 nm, were obtained.…”

Section: Organic-bridged Periodic Mesoporous Organosilicasmentioning

confidence: 99%

Highly Ordered Mesoporous Organosilica Hybrid Materials

Kapoor¹,

Inagaki²

2006

Bulletin of the Chemical Society of Japan

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The latest developments in periodic mesoporous organosilicas (PMO) have been compiled. The discovery of mesoporous hybrid organosilicas with molecular scale periodicity resulting from alternating hydrophilic and hydrophobic layers, and a cost effective solution showing the use of allyl derivatives of the bis-silyl precursors are discussed. Relevant uses of the periodic mesoporous materials in diverse applications are summarized. For example, the metal-incorporated periodic mesoporous organic frameworks are likely to offer an advantage in catalytic transformations, while the functionalized PMOs show promise in fascinating catalytic applications via enhancing the physical properties of guest molecules and clusters. In general, the advancement in PMOs have showed great promise and are expected to deliver exciting achievable future findings.

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Section: Organic-bridged Periodic Mesoporous Organosilicasmentioning

confidence: 99%

Highly Ordered Mesoporous Organosilica Hybrid Materials

Kapoor¹,

Inagaki²

2006

Bulletin of the Chemical Society of Japan

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“…Bao et al [9,10] investigated the influence of acid concentration on the degree of structural order and the external morphology of the final product. Burleigh et al [11] prepared a series of SBA-15-type PMOs with different pore diameter (from 6 to 20 nm) by using 1,3,5-trimethylbenzene (TMB) as the swelling agent. Moreover, the structural order and morphology of these materials could be strongly affected by the addition of additives such as inorganic salts [12e14].…”

Section: Introductionmentioning

confidence: 99%

Novel method to synthesize highly ordered ethane-bridged PMOs under mild acidic conditions: Taking advantages of phosphoric acid

Lin

Meng

Кукуева

et al. 2015

Microporous and Mesoporous Materials

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a b s t r a c tHighly ordered SBA-15-type ethane-bridged PMOs have been obtained by employing H 3 PO 4 as acid to tune the pH in the presence of copolymer surfactant P123. The effects of the acidity and the addition of inorganic salt on the formation of the mesostructure are investigated. It is found that, compared with HCl, the polyprotic weak acid H 3 PO 4 is preferable for the synthesis of highly ordered SBA-15-type ethane-bridged PMOs with larger pore size and surface areas under mild acidic conditions. Moreover, taking the advantages of the mild acidic condition, vanadium-containing SBA-15-type ethane-bridged PMOs were successfully prepared through a direct synthesis approach. The XRD, N 2 -sorption, UVeVis and CW-EPR studies of the V-PMO show that part of the vanadium species are present in polymeric (VeO eV) n clusters, while part of the vanadium centers are well-dispersed and immobilized on the inner surface of the mesopores.

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“…Other synthetic techniques have also been explored to enlarge the pore size and control the pore structure of mesoporous organosilicas, Jones et al synthesized mesoporous organosilicas with highly ordered large mesopores by using a direct liquid crystal templating route [26]. Using 1,3,5-trimethylbenzene(TMB) or 1,3,5-triisopropylbenzene(TMP) as swelling agents under basic or acid media, the pore-enlarged organosilicas was obtained by Markowitz [27] and Liang and Anwander [28], respectively, but the addition of swelling agents usually leads to a phase transformation to mesostructured cellular foam (MCF). Ordered mesoporous organosilicas with a pore size about 7 nm was obtained with the aid of inorganic salts such as chloride and fluoride, which can enhance the self-assembly interaction between surfactant arrays and organosilicas species [29][30][31].…”

Section: Introductionmentioning

confidence: 99%