Coating processes – Fluorescent or phosphorescent coating
Reexamination Certificate
2005-03-01
2005-03-01
Beck, Shrive P. (Department: 1762)
Coating processes
Fluorescent or phosphorescent coating
C427S064000, C427S162000, C427S169000, C427S372200, C427S385500, C427S397700, C428S690000
Reexamination Certificate
active
06861091
ABSTRACT:
A self-assembly process for preparing luminescent organic-inorganic nanocomposite thin films is disclosed. A homogeneous solution in water and an organic solvent is obtained containing a soluble silicate, a silica coupling agent, a surfactant, and an organic material having a hole transport, electron transport, and/or emissive material moiety. The silica coupling agent is selected to chemically react with the organic material. A film of the homogeneous solution is deposited onto a substrate. Preferentially evaporating the organic solvent enriches the concentration of water and non-volatile solution components to promote micelle formation. Organic materials migrate into the hydrophobic portion of the forming micelles. Continued evaporation promotes self-assembly of the micelles into interfacially organized liquid crystalline mesophases. Reacting the organic material and silica coupling forms a nanostructure self-assembly. Luminescent ordered nanocomposite structures prepared by the process, and organic-inorganic HLED devices fabricated from the luminescent organic-inorganic nanocomposite structures are disclosed.
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Beck Shrive P.
Markham Wesley D.
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