Design of Chiral Hybrid Organic-Inorganic Mesoporous Materials as Enantioselective Epoxidation and Alkylation Catalysts

New Chiral Hybrid Organic-Inorganic Mesoporous Materials for Enantioselective Epoxidation.

Nanoporous Materials II, Proceedings of the 2nd Conference on Access in Nanoporous Materials - Studies in Surface Science and Catalysis ◽

10.1016/s0167-2991(00)80282-7 ◽

2000 ◽

pp. 773-780 ◽

Cited By ~ 4

Author(s):

D. Brunei ◽

P. Sutra ◽

F. Fajula

Keyword(s):

Mesoporous Materials ◽

Enantioselective Epoxidation

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Heterogeneous enantioselective epoxidation catalyzed by Mn(salen) complexes grafted onto mesoporous materials by phenoxy group

Journal of Molecular Catalysis A Chemical ◽

10.1016/j.molcata.2005.05.024 ◽

2005 ◽

Vol 238 (1-2) ◽

pp. 175-184 ◽

Cited By ~ 68

Author(s):

Huidong Zhang ◽

Song Xiang ◽

Jianliang Xiao ◽

Can Li

Keyword(s):

Mesoporous Materials ◽

Phenoxy Group ◽

Salen Complexes ◽

Enantioselective Epoxidation

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Enantioselective epoxidation of unfunctionalized olefins catalyzed by the Mn(salen) catalysts immobilized in the nanopores of mesoporous materials

Journal of Catalysis ◽

10.1016/j.jcat.2005.12.023 ◽

2006 ◽

Vol 238 (2) ◽

pp. 369-381 ◽

Cited By ~ 107

Author(s):

H ZHANG ◽

Y ZHANG ◽

C LI

Keyword(s):

Mesoporous Materials ◽

Enantioselective Epoxidation

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Mesoporous materials: Metallic alliance

Nature China ◽

10.1038/nchina.2007.200 ◽

2007 ◽

Author(s):

Anne Pichon

Keyword(s):

Mesoporous Materials

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Mesoporous materials: Carbon-black magic

Nature China ◽

10.1038/nchina.2007.86 ◽

2007 ◽

Author(s):

Hongfei Wang

Keyword(s):

Carbon Black ◽

Mesoporous Materials ◽

Black Magic

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Enantioselective Epoxidation of Olefins with Chiral (Salen)manganese(III) Complexes Bearing 4-Methyl-3-[(R)-1-phenylpropyl]salicylideneamine as a Constituent

Synlett ◽

10.1055/s-1991-20839 ◽

1991 ◽

Vol 1991 (09) ◽

pp. 691-692

Author(s):

Naoki Hosoya ◽

Ryo Irie ◽

Yoshio Ito ◽

Tsutomu Katsuki

Keyword(s):

Enantioselective Epoxidation ◽

Epoxidation Of Olefins

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Size Control of Block Polymer Templated Mesoporous Silicate Materials

MRS Proceedings ◽

10.1557/proc-628-cc6.24 ◽

2000 ◽

Vol 628 ◽

Author(s):

Takeo Yamada ◽

Keisuke Asai ◽

Kenkichi Ishigure ◽

Akira Endo ◽

Hao S. Zhou ◽

...

Keyword(s):

Mesoporous Materials ◽

Molecular Sieve ◽

Mesoporous Material ◽

Triblock Copolymer ◽

Size Control ◽

Block Polymer ◽

New Class ◽

Mesoporous Silicate ◽

Cubic Structure ◽

Silicate Materials

ABSTRACTMesoporous materials have attracted considerable interest because of applications in molecular sieve, catalyst, and adsorbent. It will be useful for new functional device if functional molecules can be incorporated into the pore of mesoporous material. However, it is necessary to synthesize new mesoporous materials with controlled large pore size. Recently, new class of mesoporous materials has been prepared using triblock copolymer as a template. In this paper, we reported that hexagonal and cubic structure silicate mesoporous materials can be synthesized through triblock copolymer templating, and their size was controlled by synthesis condition at condensation.

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Synthesis of Smart Mesoporous Materials

MRS Proceedings ◽

10.1557/proc-775-p7.8 ◽

2003 ◽

Vol 775 ◽

Author(s):

G.V.Rama Rao ◽

Qiang Fu ◽

Linnea K. Ista ◽

Huifang Xu ◽

S. Balamurugan ◽

...

Keyword(s):

Mesoporous Silica ◽

Mesoporous Materials ◽

Fluorescent Dyes ◽

Thermo Gravimetric Analysis ◽

Molecular Transport ◽

Solute Diffusion ◽

Gravimetric Analysis ◽

Stimuli Responsive ◽

Porous Network ◽

Hybrid Mesoporous Materials

AbstractThis study details development of hybrid mesoporous materials in which molecular transport through mesopores can be precisely controlled and reversibly modulated. Mesoporous silica materials formed by surfactant templating were modified by surface initiated atom transfer radical polymerization of poly(N-isopropyl acrylamide) (PNIPAAm) a stimuli responsive polymer (SRP) within the porous network. Thermo gravimetric analysis and FTIR spectroscopy were used to confirm the presence of PNIPAAm on the silica surface. Nitrogen porosimetry, transmission electron microscopy and X-ray diffraction analyses confirmed that polymerization occurred uniformly within the porous network. Uptake and release of fluorescent dyes from the particles was monitored by spectrofluorimetry and scanning laser confocal microscopy. Results suggest that the presence of PNIPAAm, a SRP, in the porous network can be used to modulate the transport of aqueous solutes. At low temperature, (e.g., room temperature) the PNIPAAm is hydrated and extended and inhibits transport of analytes; at higher temperatures (e.g., 50°C) it is hydrophobic and is collapsed within the pore network, thus allowing solute diffusion into or out of the mesoporous silica. The transition form hydrophilic to hydrophobic state on polymer grafted mesoporous membranes was determined by contact angle measurements. This work has implications for the development of materials for the selective control of transport of molecular solutes in a variety of applications.

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