HYBRID ORGANIC-INORGANIC MATERIALS - A LAND OF MULTI-DISCIPLINARITY

Organic-inorganic hybrids appear as a creative alternative for obtaini ng new materials with unusual features. This is related to their dipha sic structures, leading to multifunctional materials. The low-temperat ure processes which are used to synthesize such structures provide a w ide versatility in the design of the compounds. The potentiality of th e chemistry is to play on the structure of these mixtures and dissocia te the various contributions in tailoring both phases and controlling the interfaces. In this paper, a review of some chemistry pathways to hybrid materials is presented. The nature of the bonds between organic and inorganic phases is used to divide them in two major families: cl ass I corresponds to materials with weak interphase bonding, while cla ss II corresponds to materials where both phases are chemically grafte d. Applications of these materials in the fields of optics, iono-elect ronics, mechanics, biology and others are expected. Some applications are reviewed, with respect to the versatility of the synthetic procedu re. Most of the properties of these new high-technology materials are dependent on their structural and chemical composition as well as on t he dynamical properties inside the blends.