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
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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.
Claims14
An electro-optical film comprising a nonlinear optical chromophore dispersed and poled with an aprotic and polar solvent, wherein the nonlinear optical chromophore is represented by the general formula (I):
- 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.
An electro-optic device comprising one or more electro-optical films, wherein each of the one or more electro-optical films comprises a nonlinear optical chromophore dispersed and poled with an aprotic and polar solvent, wherein the nonlinear optical chromophore is represented by the general formula (I):
- 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.
Dependencies are inferred from the claim text.