Mesoporous organosilicas

SYNTHESIS AND PROTOLYTIC PROPERTIES OF THE PERIODICALLY ORDERED MESOPOROUS ORGANOSILICAS WITH MCM-41-TYPE ARCHITECTURES FUNCTIONALISED... 

I2 as a probe for aromatic rings in phenylene-bridged periodic mesoporous organosilica... 

Phenylene-bridged periodic mesoporous organosilicas, with both amorphous and crystal-like walls, (referred to in the following as AW-Ph-HMM and CW-Ph-HMM, respectively) were synthesized and characterized as previously reported [6,7]. BTEB was used as a precursor for both solids the surfactant was Brij-76 (Ci8H37(OCH2CH2)nOH) in acidic media for AW-Ph-HMM and octadecyl-trimethylammonium bromide(ODTMA) in basic media for CW-Ph-HMM. A purely siliceous MCM-41 sample was also synthesised, the first step being the solution of octadecyltrimethylammonium bromide in a basic aqueous solution (NH3), kept a 333 K. Tetraethyl orthosilicate (TEOS) was then added in all cases dropwise, and the mixture stirred for 24h at room temperature (H20 34.2 g/ NH3 (15%) 8.52 g/ ODTMA 0.73 g TEOS 3.24 g). After further 24 hours in hydrothermal conditions at 368 K, the sample... 

Hoffmann, F. Cornelius, M. Morell, J. Froba, M. 2006. Periodic mesoporous organosilicas (PMOs) Past, present, and future. J. Nanosc. Nanotech. 6 265-288. 

W. J. Hunks and G. A. Ozin, Challenges and advances in the chemistry of periodic mesoporous organosilicas (PMOs), J. Mater. Chem., 2005, 15, 3716. 

B. D. Hatton, K. Landskron, W. Whitnall, D. D. Perovic and G. A. Ozin, Spin Coated Periodic Mesoporous Organosilica Thin Films Towards a New Generation of Low-Dielectric-Constant Materials, Adv. Fund. Mater., 2005, 15, 823. 

Figure 3.7 Schematic of the incorporation of organic groups in the pore walls of mesoporous silica using bridged organosilane precursors (top). Schematic of the structure of a phenylene-bridged hybrid mesoporous organosilica with both atomic and mesoporous periodicity (bottom) [36],...

MULTI-SILYLATED COMPOUNDS FOR THE SYNTHESIS OF (PERIODIC) MESOPOROUS ORGANOSILICAS (PMOs) 72... 

Single-Source Precursor Method Using Bis- and Multi-Silylated Compounds for the Synthesis of (Periodic) Mesoporous Organosilicas (PMOs)... 

Moreover, recently, even the synthesis of mesoporous pure silica308 309 as well as mesoporous organosilica phases310 with chiral topology in the absence of any chiral transfer additive has been reported. The minimization of the free surface energy has been proposed as the main driving force for the formation of such chiral morphologies.309... 

This all-in-one approach was employed by the same group to prepare highly amine-functionalized mesoporous organosilicas.340... 

Hybrid Mesoporous Frameworks Periodic Mesoporous Organosilicas... 

Hybrid Silica Materials Use of silica with periodically mesoporous organosilicas (PMOs) morphology, with organic groups as functionalization materials, for applications in sensing. 

Hatton B Landskron K Whitnall W Perovic D Ozin GA, Past present, and future of periodic mesoporous organosilicas—The PMOs, Acc. Chem. Res., 2005, 38, 305-312. 

Keywords heavy metal ions MCM-41 MCM-48 mercury adsorption mesoporous organosilicas ordered mesoporous silicas SBA-15... 

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