1,4-phenylene-bridged mesoporous

Camarota, B. Mann, S. Onida, B. Garrone, E., Heirarchical Self-Assembly in Molecularly Ordered Phenylene-Bridged Mesoporous Organosilica Nanofilaments. ChemPhysChem 2007,8, 2363-2366. 

Kapoor, M.P., Yanagi, M., Kasama, Y., Yokohama, T., Inagaki, S., Shimada, T., Nanbu, H., and Juneja, L.R. (2006) Self-assembly of cubic phenylene bridged mesoporous hybrids from allylorganosilane precursors. /. Mater. Chem., 16, 3305-3311. 

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... 

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],...

Scheme 4.4 Templated synthesis of mesoporous organosilicas [39], and transmission electron micrograph and electron diffraction pattern (inset) of the phenylene-bridged...

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