Organic-inorganic nano-hybrids

Miyazaki, T., Ohtsuki, C. and Tanihara, M. (2003) Synthesis of bioactive organic-inorganic nano-hybrid for bone repair through sol-gel processing. Journal of Nanoscience and Nanotechnology, 3, 511-515. 

Matsukawa, K.J. Development of photo-functional materials from organic/inorganic nano-hybrids. J. Photopolym. Sei. Technol. 18(2), 203-210 (2005)... 

Fig. 7.16 Dependence of proton conductivity on relative humidity of a hybrid octane membrane at (a) 120°C and (b) 160°C. Reprinted with permission from Ref. [56] I. Honma, et al.. Organic/ inorganic nano-composites for high temperature proton conducting polymer electrolytes. Solid State Ionics 162-163, 237-245 (2003). Copyright Elsevier...

These sol-gel-derived nano-hybrids have a potential to show flexibility and bioactivity. As the biological and mechanical properties of nano-hybrids can be tailored by selecting the combination of the organic and inorganic components, these nano-hybrids may be a useful design to obtain flexible and bioactive bone-repairing materials. 

Sanchez C, Soler-Illia G, et al (2003) Design of functional nano-structured materials through the use of controlled hybrid organic-inorganic interfaces. Comptes Rendus Chimie 6(8-10), 1131-1151... 

Various compounds have been prepared by solvothermal reactions metals, metal oxides, chalcogenides, - ° nitrides, - -" phosphides, open-framework structures, - oxometalate clusters, - organic-inorganic hybrid materials, - - and even carbon nanotnbes. - Most of the solvothermal products are nano- or microparticles with well-defined morphologies. The distribution of the particle size of the prodnct is nsnally qnite narrow, and formation of monodispersed particles is freqnently reported. - When the solvent molecules or additives are preferentially adsorbed on (or have a specific interaction with) a certain surface of the products, growth of the surface is prohibited and therefore products with unique morphologies may be formed by the solvothermal reaction. - - Thus nanorods, wires, tnbes, and sheets of various types of products have been obtained solvothermally. 

Lan and Pinnavaia [6] showed that hybrid organic-inorganic composites exhibited mechanical properties superior to those for their separate composites. Dependence of tensile strength and modulus of epoxy nano-clay composites on the chain length of the clay-intercalated alkylammonium ions is shown in Fig. 28. The presence of the organoclay substantially increased both the tensile strength and modulus relative to the pristine polymer. The mechanical properties increased with any exfoliation in the order ... 

From this structural model we can see that a loaded ferritin molecule is an organic/inorganic hybrid nanoparticle. Furthermore, the inorganic core represents a nano-sized portion of a solid-state structure and is thus of interest to researchers in the area of nanoscience where the properties of systems cannot be described using conventional ideas from molecular or from solid-state science. Also noteworthy is the control over the properties of the core which is exerted by the protein shell and which effectively provides a nanoreactor for the production of the iron(III) oxyhydroxide nanoparticle. Thus, the ferritin system provides insights into many aspects of nanoscience which are at the forefront of research in this field. Also, if we look back on how... 

In the development of the electrode surface modification method, nano-regulation of the surface films with inorganic nanoclusters and molecular-level tracking of the dynamic phase transition are highlighted. Eor the in-situ characterization of such electrode surfaces covered with a monolayer-level organic film or organic molecule-nanocluster hybrid film, UV-visible reflectance spectroscopy... 

Henry M. Nalwa NH, editor. Handbook of organic-inorganic hybrid materials and nano composites, vol. 1. USA American Scientific Publishers 2003. 

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