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US 12,668,743 B2Granted
Nonlinear optical chromophores having tetrahydrocarbazole donor groups, lyotropic compositions containing the same, and methods of poling such compositions
AssigneeLightwave Logic, Inc.
InventorsCory Pecinovsky, Barry Johnson, Ginelle A. Ramann
Life of this patent
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Abstract
Nonlinear optical chromophore compositions which display lyotropic nematic liquid crystal phases in polar organic solvents and provide a mechanical anisotropic effect allowing for the formation of a non-centrosymmetric chromophore-polymer matrix without the application of an electric field.
Claims7
A lyotropic composition comprising the nonlinear optical chromophore of the general formula (I):
- D-Π-A
- wherein D represents an organic electron-donating group;
- A represents an organic electron-accepting group having an electron affinity greater than the electron affinity of D;
- and Π represents a Π-bridge between A and D;
- wherein the electron-donating group D comprises a tetrahydrocarbazole moiety having the general formula (II):
- wherein R1 represents a moiety other than hydrogen, wherein R2 represents a moiety selected from hydrogen, halides, alkoxy groups, linear or branched alkyl groups, and aryl groups, wherein R3 represents a moiety selected from hydrogen and linear or branched alkyl groups, wherein R4 represents a moiety selected from hydrogen and linear or branched alkyl groups, and wherein R5 which may optionally be present represents a fused aliphatic or aromatic ring having 3 to 5 carbon atoms.
3 more elements
Dependencies are inferred from the claim text.