Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Reexamination Certificate
2006-08-29
2006-08-29
Jackson, Monique R. (Department: 1773)
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
C428S323000, C428S332000, C428S334000, C428S336000, C428S338000, C427S180000
Reexamination Certificate
active
07097902
ABSTRACT:
A process for the preparation of a self assembled superlattice thin film of organic nanocrystal particles is described comprising: (i) combining one or more functional organic material to be precipitated as nanocrystal particles and one or more surface active material in a compressed CO2phase with a density of at least 0.1 g/cc, where the functional material is substantially insoluble in the compressed CO2in the absence of the surfactant, the surfactant comprises a compressed CO2-philic portion and a functional material-philic portion, and the compressed CO2phase, functional material and surfactant interact to form an aggregated system having a continuous compressed CO2phase and a plurality of aggregates comprising surfactant and functional material molecules of average diameter less than 50 nanometers dispersed therein; (ii) rapidly depressurizing the compressed CO2phase thereby precipitating the dispersed functional and surfactant materials in the form of composite organic nanocrystals of average diameter less than 50 nanometers, and (iii) depositing the organic nanocrystals on a substrate surface, wherein the organic nanocrystals form a thin film having an ionic content of less than 0.001 M in equivalent sodium chloride concentration on the substrate surface, and the thin film exhibits a long range periodicity in the arrangement of the organic nanocrystals in a self assembled superlattice structure, as evidenced by x-ray diffraction.
REFERENCES:
patent: 2003/0030706 (2003-02-01), Jagannathan et al.
patent: 2003/0054957 (2003-03-01), Irvin et al.
patent: 2003/0121447 (2003-07-01), Irvin et al.
patent: 2003/0122106 (2003-07-01), Irvin et al.
Zhao-hui Chen, Ying Ma, Jian-nian Yao; “Self-Assembled Inorganic/Organic Composite Superlattice Thin Films With Photochromic Properties”; Thin Solid Films; vol. 384; 2001; pp. 160-165.
C. B. Murray, C. R. Kagan, M. G. Bawendi; “Synthesis And Characterization Of Monodispersed Nanocrystals And Close-Packed Nanocrystal Assemblies”; Annual Review Of Materials Science; vol. 30′ 2000; pp. 545-610.
Blanton Thomas N.
Jagannathan Ramesh
Jagannathan Seshadri
Mehta Rajesh V.
Anderson Andrew J.
Eastman Kodak Company
Jackson Monique R.
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