Processing and optical properties of inorganic-organic hybrids (polycerams). I. MPEOU-based waveguides

High refractive index organic–inorganic nanocomposites: design, synthesis and application

“…ORMOSIL systems have been developed for waveguide application. [152][153][154] High RI titania nanoscale building blocks have been commonly integrated into an ORMOSIL matrix to fabricate optical waveguides. 81,85,155,156 The results have shown that it is possible to make planar waveguides with optical losses typically below 1 dB cm À1 in various communication windows by this method.…”

Tailoring Perfluorosulfonated Ionomer-Entrapped Sol−Gel-Derived Silica Nanocomposite for Spectroelectrochemical Sensing of Re(DMPE)3+

“…Sol−gel processing involves hydrolysis and polycondensation of molecular precursors, mostly metal and semimetal alkoxides, under ambient conditions and leads to the formation of ceramic materials. − The sol−gel process is amenable to the incorporation of organic moieties in inorganic matrixes, in both hybrid and composite forms. Organic−inorganic hybrid materials have been synthesized using functionalized organic components, such as organosilanes, where chemical bonding is established between organic and inorganic moieties. − Sol−gel techniques have been exploited to encapsulate proteins 17,18 and enzymes. , A variety of ionomers have been entrapped in sol−gel-derived silica. For example, poly(acrylic acid) and sodium poly(styrene sulfonate) were entrapped in sol−gel-derived silica and phase separation, which occurs in parallel with the hydrolysis, condensation, and gelation of silicon alkoxide solution containing the ionomers, was investigated. , Sodium poly(vinyl sulfonate) and poly(dimethyldiallylammonium chloride) (PDMDAAC) were doped in sol−gel-derived silica and characterized electrochemically with [Ru(bipy) 3 ] 2+ and [Fe(CN) 6 ], - respectively .…”

Comparative studies of sol-gel SiO 2 thin films prepared by spin-coating and dip-coating techniques

“…Sol-gel method can produce almost any single-or multi-component oxide coating. Such coating has been deposited on various substrates, including glass, to provide high-reflection [1] , anti-reflection [2][3][4] , electrochromism [5] , photochromism [6][7] , thermochromism [8][9][10] , waveguiding [11] , ferroelectrics [12] , sensors [13] , photocatalyst [14] , etc. Up to now, several physical vapour deposition methods have been used to prepared dioxide coatings, including plasma ion-assisted deposition [15] , magnetron sputtering deposition [16] , and e-beam deposition [15,17] etc.…”