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Clay mineral particles are interesting nanosized building blocks due to theirhigh aspect ratio and the chemical properties. The main interest in thisnanosized building blocks results essentially from the colloidal size and thepermanent structural charge of the particles. Smectites or swelling clayminerals are naturally occurring nanomaterials that can be fully delaminated toelementary clay mineral platelets in dilute aqueous dispersion. This diluteaqueous smectite suspensions are well suited to convert into functionalnanofilms. The functionalization is performed by ion exchange reaction withamphiphilic molecules carrying the desired functionality, such as chirality,two photon absorption, energy transfer, optical nonlinearity and magnetism,which are due to the nature of the amphiphilic cations and to the organizationof both the amphiphilic molecules and the elementary clay mineral platelets.Controlling the structure of materials at the nanometre scale is of fundamentalimportance for tailoring such materials properties. Langmuir Blodgett films areknown for a high degree of organisation of organic molecules. Fundamentalresearch into the organization of molecules at clay mineral platelets isnecessary to optimize the materials for specific applications. This paper givesan overview of organo-clay hybrid Langmuir-Blodgett nano films.

Nano dimensional hybrid organo-clay Langmuir-Blodgett films