1999
DOI: 10.1039/a805538f
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Molecular design of hybrid organic-inorganic nanocomposites synthesized via sol-gel chemistry

Abstract: Hybrid organic-inorganic materials offer a wide range of interesting applications especially in optics. Chemistry plays a major role in the elaboration and comprehension of such materials. Sol-gel process provide a method to blend, down to the molecular scale, organic and inorganic components. Examples of hybrid organic-inorganic materials for optics and optical characterizations of hybrid materials are given here.

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Cited by 303 publications
(213 citation statements)
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“…The use of organic dyes in a hybrid organic-inorganic matrix has better characteristics than an organic matrix because the dye colored hybrid films have enhanced mechanical properties like higher hardness and stronger abrasion resistance [7]. With respect to inorganic sol-gel films, hybrid films also provide several advantages such as much better adhesion, transparency, flexibility, reduced surface roughness, and better refractive index matching [8][9][10][11][12].…”
Section: Introductionmentioning
confidence: 99%
“…The use of organic dyes in a hybrid organic-inorganic matrix has better characteristics than an organic matrix because the dye colored hybrid films have enhanced mechanical properties like higher hardness and stronger abrasion resistance [7]. With respect to inorganic sol-gel films, hybrid films also provide several advantages such as much better adhesion, transparency, flexibility, reduced surface roughness, and better refractive index matching [8][9][10][11][12].…”
Section: Introductionmentioning
confidence: 99%
“…The raw materials used in the preparation of the samples were: metiltrietoxysilane (Si(CH 3 )(OCH 2 CH 3 ) 3 , MTEOS, purity >98% Fluka), metildietoxysilane (SiH(CH 3 )(OCH 2 CH 3 ) 2 , MDES, purity 100%, ABCR), trietoxysilane (SiH(OCH 2 CH 3 ) 3 , TREOS, purity >98%, Fluka), tetrapropaxide of zirconium ( Z r ( O P r n ) 4 , i n p ro p a n o l a t 70 wt%, Fluka), acetylacetone (CH 3 COCH 2 COCH 3 , acac, purity 99.5%, Fluka), ethanol (CH 3 CH 2 OH, purity 99.5%, Normasolv), EuCl 3 (purity 99.9%, Strem) and Ce(NO 3 ) 4 ·2NH 4 NO 3 (purity 99.9%, Merck). The reactives were used without an additional purification.…”
Section: Methodsmentioning
confidence: 99%
“…Uma das características principais oferecidas pelo processo sol-gel é permitir a inserção de molé-culas orgânicas em uma rede polimérica inorgânica. Os componentes inorgânicos e orgânicos desejados podem, então, ser combinados em escala nanométrica, originando os híbridos inorgânico-orgâni-cos. Esta técnica experimental apresenta algumas vantagens inerentes sobre outras na obtenção desses híbridos, como o controle da estrutura, porosidade com formação de materiais meso ou microporosos, composição homogênea, pureza e habilidade para preparação de materiais modulados com partículas esféricas, fibras ou filmes finos [94][95][96] . Esse processo é, geralmente, dividido em dois estágios: hidrólise do alcóxido onde são produzidos os grupos hidroxilas e policondensação dos mesmos com os grupos alcóxido remanescentes, podendo estas reações ocorrerem tanto em meio ácido como bási-co 97 .…”
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