Patterned fine particle film structures
View Patent ↗A patterned fine particle film structure includes a fine particle layer including fine particles arranged and bound to a surface of a substrate coated with a patterned film including a first film compound having a first functional group. The fine particles are coated with films including a first coupling agent having a first coupling reactive group that undergoes a coupling reaction with the first functional group to form a bond. The fine particle layer is bound by a bond formed through a coupling reaction. In an embodiment, fine particles coated with films of a film compound that reacts with the first coupling reactive group and the fine particles are alternately bound to the substrate.
1. A film structure, comprising:
a substrate;
a first alkoxysilane linker linked to the substrate through a first active hydrogen group of the substrate, the first alkoxysilane linker having a first epoxide reactant product;
a fine particle;
a second alkoxysilane linker linked to the particle through a second active hydrogen group of the particle, the second alkoxysilane linker having a second epoxide reactant product; and
a coupling agent including an imidazole group linking the first alkoxysilane linker and the second alkoxysilane linker so as to link the particle to the substrate through the two alkoxysilane linkers and the coupling agent including the imidazole group disposed therebetween.
2. The film structure of claim 1 , comprising a plurality of fine particles linked to the substrate to form a particle layer arranged into a pattern.
3. The film structure of claim 2 , wherein the particle film includes a single particle layer.
4. The film structure of claim 1 , further comprising:
a second fine particle having one or more third active hydrogen groups;
a third alkoxysilane linker linked to the second particle through the third active hydrogen group, said third alkoxysilane linker having a third epoxide reactant product; and
a second coupling agent linking the second epoxide reactant product of the second alkoxysilane to the third epoxide reactant product of the third alkoxysilane thereby linking the second fine particle to the fine particle.
5. The film structure of claim 1 , wherein the substrate includes a glass, lens, diffraction grating, metal, foil, aluminum, copper, silicon, semiconductor, electronic printed boards, passivation film, a capacitor, or combinations thereof.
6. The film structure of claim 1 , wherein the one or more first and second active hydrogen groups include hydroxyl groups or amino groups.
7. The film structure of claim 1 , wherein one or more of the alkoxysilane linkers include the epoxy reactant product formed from reacting an epoxy group with the coupling agent, and the coupling agent comprises 2-methylimidazole.
8. The film structure of claim 7 , wherein a resulting structure linking the fine particle to the substrate includes the first alkoxysilane linker linked to the substrate, which is linked to the 2-methylimidazole reactant product, which is linked to the second alkoxysilane linker, which is linked to the particle so that the resulting linking structure includes two epoxy groups with the 2-methylimidazole reactant product disposed therebetween.
9. The film structure of claim 1 , wherein the fine particles include at least one of:
inorganic fine particles including a metal;
inorganic fine particles including a metal oxide;
organic fine particles including a polymer;
organic fine particles including a polymer micelle; or
organic-inorganic hybrid fine particles.
10. The film structure of claim 1 , wherein the particle includes nickel.