Patent ID: 6783849
Filing Date: 2004-08-31
Classification: B05D,B82Y,C23C,C30B,Y10T

Abstract:
A method of forming a multilayered-structure composed of two or more discrete monomolecular layers, where each layer is composed of molecules of a selected polycyclic aromatic compound having a defined z axis oriented substantially normal to the plane of the monolayer, said method comprising(a) depositing molecules of a selected polycyclic aromatic compound having a defined z axis with a chemically reactive group at each axial end, by vapor phase deposition, onto a substrate having surface-reactive sites capable of reacting with the chemically reactive group in the selected compound, said depositing being carried under conditions which allow chemiadsorption of the selected compound in a molecular monolayer, by covalent coupling of one end of the compound to the substrate, and sublimation of non-covalently bonded compounds from the surface, (b) by said depositing, forming on the substrate, a monomolecular layer of the selected compound characterized by in-plane compound ordering, and (c) repeating steps (a) and (b) one or more times, where the monomolecular layer formed at each round of steps (a) and (b) forms a new substrate having a surface-exposed monolayer with exposed reactive groups.