Transparent Organic/Inorganic Hybrid Gels: A Classification Scheme

Fabrication of inorganic–organic hybrid films for optical waveguide

“…The precursor solutions for the guiding layer were prepared from a combination of 3-(trimethoxysilyl)propylmethacrylate [H 2 C@C(CH 3 )CO 2 (CH 2 ) 3 Si(OCH 3 All the reactions were performed at 25°C in a water bath (Isotemp 3013, Fisher Scientific) under nitrogen atmosphere. The resulting solutions were filtrated through a 0.2 lm membrane filter (PTFE, Advantec MFS).…”

“…Inorganic-organic hybrid materials prepared by sol-gel process can be divided into two classes [3][4][5][6]. Hybrid materials with only weak chemical bonding between organic and inorganic networks are called Class I hybrid materials; those with strong bonding are called Class II hybrid materials.…”

Influence of pH and Dye Concentration on the Physical Properties and Microstructure of New Coumarin 4 Doped SiO2-PDMS ORMOSIL

“…Thus, one can expect faster 3-dimensional silica network formation bonded with PDMS covalently through terminated OH of the TEOS. 2,3,14 In the highly acidic region of sol (pH ≤ 2.5), the silica particulates grow up almost non-linearly, hence, form relatively less dense acid catalyzed OS samples with increased micropore size. 6,14,[19][20][21][22] In the acid-base catalyzed (TS) samples prepared with the condition 2.5 < pH ≤ 7, the silica particles grow up randomly resulting in loosely packed, cluster-like structures having mesopores and large size of silica particles, which can be seen clearly below.…”

“…[1][2][3] The organic dyes show the high fluorescent quantum yields, large cross-sections for absorption-emission, low threshold power for laser action, attractive gain characteristics and tunability in the visible region. [1][2][3] The sol-gel derived ORMOSIL network contains a significant amount of organic functionalities, which offers great flexibility with respect to the chemical compatibility of the gel with the organic dye.…”

Sol–gel derived organic/inorganic hybrid gels based on poly(2-hydroxyethyl aspartamide) and silica

“…An example of an approach leading to totally new materials is the synthesis of inorganic-organic hybrid materials through the synergistic combination of polymers and silica [1][2][3]. Since the first organic/inorganic hybrid material was reported about two decades ago, many reports have been published on hybrid materials with various conventional organic polymers [4][5][6][7].…”