Patent ID: 7539038

Claim:
A memory device comprising: an upper electrode; a lower electrode; and a memory layer, wherein the memory layer is disposed between the upper electrode and the lower electrode and comprises an organic-inorganic complex mesoporous material having nanochannels, wherein metal nanoparticles or metal ions are within the nanochannels, wherein the mesoporous material is formed from a composition comprising a thermally stable matrix precursor, a pore-forming material, and a solvent for dissolving the matrix precursor and the pore-forming material, and wherein the thermally stable matrix precursor is a siloxane resin prepared by hydrolyzing and condensing a compound represented by Formula 1 or 2, below, and a monomer represented by Formula 5, below, using an acid catalyst and water in the presence of an organic solvent: wherein R 1 is a hydrogen atom, a C 1 to C 3 alkyl group, or a C 6 to C 15 aryl group; X 1 , X 2 and X 3 are each independently a hydrogen atom, a C 1 to C 3 alkyl group, a C 1 to C 10 alkoxy group, or a halogen atom, at least one of which is a hydrolyzable functional group; and m is an integer ranging from 0 to 10, and p is an integer ranging from 3 to 8; and wherein R 1 is a hydrogen atom, a C 1 to C 3 alkyl group, or a C 6 to C 15 aryl group; R 2 is a hydrogen atom, a C 1 to C 10 alkyl group, or SiX 1 X 2 X 3 (in which X 1 , X 2 and X 3 are each independently a hydrogen atom, a C1 to C 3 alkyl group, a C 1 to C 10 alkoxy group, or a halogen atom); and p is an integer ranging from 3 to 8; and RSiX 1 X 2 X 3 Formula 5 wherein R is a hydrogen atom, a C 1 to C 3 alkyl group, a C 3 to C 10 cycloalkyl group, a C 1 to C 10 alkoxy group or a C 6 to C 15 aryl group; X 1 , X 2 and X 3 are each independently a C 1 to C 3 alkyl group, a C 1 to C 10 alkoxy group, or a halogen atom.