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.
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):
- 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 bound to the Π-bridge at a carbon atom in the tetrahydro six-membered carbon ring of the tetrahydrocarbazole moiety, and wherein the hydrogen bound to the nitrogen of the five-membered ring of the carbazole moiety is replaced with a substituent R, wherein R represents a moiety other than hydrogen.
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 within an aprotic and polar solvent, wherein the nonlinear optical chromophore is represented by 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 Πrepresents a ø-bridge between A and D;
- wherein the electron-donating group D comprises a tetrahydrocarbazole moiety bound to the Π-bridge at a carbon atom in the tetrahydro six-membered carbon ring of the tetrahydrocarbazole moiety, and wherein the hydrogen bound to the nitrogen of the five-membered ring of the carbazole moiety is replaced with a substituent R, wherein R represents a moiety other than hydrogen.
Dependencies are inferred from the claim text.