High Surface Area, Thermally Stable, Hydrophobic, Microporous, Rigid Gels Generated at Ambient from MeSi(OEt)3/(EtO)3SiCH2CH2Si(OEt)3 Mixtures by F--Catalyzed Hydrolysis

被引：6

作者：

Furgal, Joseph C. ^{[1
,5
,6
]}

Yamane, Honami ^{[2
]}

Odykirk, Timothy R. ^{[3
]}

Yi, Eongyu ^{[3
]}

Chujo, Yoshiki ^{[2
]}

Laine, Richard M. ^{[3
,4
]}

机构：

[1] Univ Michigan, Dept Chem, Ann Arbor, MI 48109 USA

[2] Kyoto Univ, Dept Polymer Chem, Kyoto 6068501, Japan

[3] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA

[4] Univ Michigan, Dept Macromol Sci & Engn, Ann Arbor, MI 48109 USA

[5] Bowling Green State Univ, Dept Chem, Bowling Green, OH 43403 USA

[6] Bowling Green State Univ, Ctr Photochem Sci, Bowling Green, OH 43403 USA

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2018年 / 24卷 / 01期

关键词：

gels; high surface area; hydrolysis; materials chemistry; polymers; POLYHEDRAL OLIGOMERIC SILSESQUIOXANES; RATIONAL DESIGN; CHEMISTRY; POLYMERS; REARRANGEMENT; STRATEGIES; NETWORKS; POROSITY; SILICA;

D O I：

10.1002/chem.201704941

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

High surface area materials are of considerable interest for gas storage/capture, molecular sieving, catalyst supports, as well as for slow-release drug-delivery systems. We report here a very simple and fast route to very high surface area, mechanically robust, hydrophobic polymer gels prepared by fluoride-catalyzed hydrolysis of mixtures of MeSi(OEt)(3) and bis-triethoxysilylethane (BTSE) at room temperature. These materials offer specific surface areas up to 1300 m(2) g(-1), peak pore sizes of 0.8 nm and thermal stabilities above 200 degrees C. The gelation times and surface areas can be controlled by adjusting the solvent volume (dichloromethane), percent fluoride (as nBu(4)NF or TBAF) and the BTSE contents. Polymers with other corners and linkers were also explored. These materials will further expand the materials databank for use in vacuum insulation panels and as thermally stable release and capture media.

引用

页码：274 / 280

页数：7

共 44 条

[1] Tailor-Made Hybrid Organic-Inorganic Porous Materials Based on Polyhedral Oligomeric Silsesquioxanes (POSS) by the Step-Growth Mechanism of Thiol-Ene "Click" Chemistry [J].

Alves, Filipa ;

Nischang, Ivo .

CHEMISTRY-A EUROPEAN JOURNAL, 2013, 19 (51) :17310-17313

[2]

[Anonymous], ANGEW CHEN

[3] Fluoride Rearrangement Reactions of Polyphenyl- and Polyvinylsilsesquioxanes as a Facile Route to Mixed Functional Phenyl, Vinyl T10 and T12 Silsesquioxanes [J].

Asuncion, M. Z. ;

Laine, R. M. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2010, 132 (11) :3723-3736

[4]

Barrer R. M, 1992, HYDROTHERMAL CHEM ZE

[5] A NEW FAMILY OF MESOPOROUS MOLECULAR-SIEVES PREPARED WITH LIQUID-CRYSTAL TEMPLATES [J].

BECK, JS ;

VARTULI, JC ;

ROTH, WJ ;

LEONOWICZ, ME ;

KRESGE, CT ;

SCHMITT, KD ;

CHU, CTW ;

OLSON, DH ;

SHEPPARD, EW ;

MCCULLEN, SB ;

HIGGINS, JB ;

SCHLENKER, JL .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1992, 114 (27) :10834-10843

[6]

Brinker C.J., 1990, Sol-Gel Science: The Physics and Chemistry of sol-Gel Processing, DOI [10.1016/C2009-0-22386-5, DOI 10.1016/B978-0-08-057103-4.50001-5]

[7] Organk-inorganic hybrid materials that rapidly swell in non-polar liquids: Nanoscale morphology and swelling mechanism [J].