Metal-organic hybrid materials

N anomaterials have been around for hundreds of years and are typically defined as particles of size ranging from 1 to 100 nm in at least one dimension. The inorganic nanomaterial catalysts discussed here are manganese oxides and titanium dioxide. Outside the scope of this chapter are polymers, pillared clays, coordination compounds, and inorganic-organic hybrid materials such as metal-organic frameworks. 

Furthermore, exploitation of fundamental coordination chemistry for solid state synthesis affords a variety of metal ions with preferred coordination geometries and numerous ligand architectures for the construction of metal-organic composite materials. Such hybrid inorganic-organic materials exhibit useful physical properties with applications to optics," magnetism," transport," thermochromism," and conductance. ... 

Xerogel silica was prepared from tetraethoxysilane in the presence of different porphyrins and a template (e.g. pyridine) in an alcohol/water mixture at between 25 and 120 °C [48]. The following metal-free or Fe complexes of porphyrins were employed 2 with pentafluorophenyl, 2.6-dichlorophenyl-3-sulfonic acid, 4-carboxyphenyl or 4-methylpyridinium instead of -C6H4R. A mixture of 3 mL tetraethoxysilane and 3 mg of the porphyrin was used. It was found that the structure and morphology of the inorganic/organic hybrid materials depended on the kind of porphyrin and the xerogel preparation conditions. Side selection spectra and vibronic analysis were carried out for metal-free 2 (-CeHs, -CeFs... 

Organically Substituted Metal Alkoxides 7.10.3.4.1 Inorganic-organic hybrid materials... 

U. Schubert, Sihca-based and transition metal-based inorganic-organic hybrid materials - A comparison, J. Sol-Gel Sci. TechnoL, vol. 26, pp. 47-55,... 

O Brien, M., Beale, A. and Weckhnysen, B. (2010). The Role of Synchroton Radiation in Examining the Self-Assembly of Crystalline Nanoporous Framework Materials From Zeolites and Aluminophosphates to Metal Organic Hybrids, Chem. Soc. Rev., 39, pp. 4767- 782. 

Metal-organic frameworks (MOFs), also known as coordination polymers or coordination networks, have attracted tremendous attention over the last decade due to their promising applications in gas storage [1,2], gas capture [3], separations [4], chemical catalysis [5], luminescence [6-8], magnetism [9], and dmg delivery [10]. MOFs are highly crystalline inorganic-organic hybrid materials comprised of metal ions or... 

Metal-organic frameworks, often called MOFs, are a new class of inorganic-organic hybrid materials that have enormous potential for many practical applications [10]. They can combine the high nonlinear optical coefficients of the organic molecules with excellent physical properties of the inorganics, and may... 

Substituting a certain part of the alkoxidic groups by nonhydrolysable ones, such as alkyl groups in the case of alkoxysilanes or phosphonic acid in the case of metal alkoxides, organically modified oxides, i.e. inorganic-organic hybrid materials, have been prepared. 

Organically modified metal fluorides Silicon oxide and also metal oxide based inorganic-organic hybrid materials have received broad interest academically and also for technical applications [62]. The development of such hybrids aims to combine useful properties of the inorganic part, mostly the basis of the hybrid, with those of the organic part, whereby the two parts are chemically bound to one another. Basically, two types of synthesis routes... 

By definition, composite materials are solids resulting from the combination of two or more simple materials that develop a continuous phase (polymer, metal, ceramic, etc.), and a dispersed phase such as glass fibers, carbon particles, silica powder, clay minerals, etc. In addition, they have properties that are essentially different from the components taken separately. Within the large amount of inorganic-organic hybrid materials, nanocomposites are an emerging group that established a vast attention mainly due to their potential in industrial applications [1]. 

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