Second order nonlinear optical polyimides having benzobisthiazole-based pendant groups, and preparation of the same
AssigneeNational Sun Yat-Sen University
InventorsTzu-Chien Hsu, Chien-Fan Chen, Shou-Shiun Wu
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Abstract
Disclosed herein are second order nonlinear optic polyimide polymers comprising repeating units represented by the formula: wherein each of the substituents is given the definition as set forth in the Specification and Claims. Also disclosed are the preparation processes of these polymers, chromophore-forming compounds for synthesis of these polymers, and the intermediate polymers thereof. The second order nonlinear optic polyimide polymers of formula (I) may be used in the manufacture of electro-optic (EO) devices, such as electro-optic waveguide devices.
Claims33
A second order nonlinear optic polyimide polymer comprising repeating units represented by the formula:
- wherein:
- R1 is a functionality group selected from —OH and —COOH;
- R2 is a group represented by the formula selected from
- wherein when R1 is —OH, R2 is a group represented by the formula:
- when R1 is —COOH, R2 is a group represented by the formula:
- wherein R is a phenyl or styryl group that is 3-substituted with a group selected from the —NO2, —COCH3, —CN, —SO2NH2, Br and Cl;
- and
- x+y+z=100% of the repeating units, x is at least 1%, and either or both of y and z can be zero.
A polyimide polymer comprising repeating units represented by the formula
- wherein:
- R1 is a functionality group selected from —OH and —COOH;
- when R1 is —OH, R2 ′ is a group represented by the formula:
- when R1 —COOH, R2 ′ is a group represented by the formula:
- wherein R is a phenyl or styryl group that is 3-substituted with a group selected from —NO2, —COCH3, —CN, —SO2NH2, Br and Cl;
- and
- x+y+z=100% of the repeating units, x is at least 1%, and either or both of y and z can be zero.
A compound of formula (C1):
- wherein R is a phenyl or styryl group that is 3-substituted with a group selected from —NO2,—COCH3—, —CN, —SO2NH2, Br and Cl.
A compound of formula (C2):
- wherein R is a phenyl or styryl group that is 3-substituted with a group selected from —NO2, —COCH3, —CN, —SO2NH2, Br and Cl.
A compound of formula (C3):
- wherein R is a phenyl or styryl group that is 3-substituted with a group selected from —NO2, —COCH3, —CN, —SO2NH2, Br and Cl.
A second order nonlinear optic polyimide polymer comprising repeating units represented by the formula (II):
- wherein:
- R is a phenyl or styryl group that is 3-substituted with a group selected from —NO2, —COCH3, —CN, —SO2NH2, Br and Cl;
- and n is an integer greater than 1.
A polyamic acid comprising repeating units represented by the formula (II′):
- wherein:
- R is a phenyl or styryl group that is 3-substituted with a group selected from —NO2, —COCH3, —CN, —SO2NH2, Br and Cl;
- and
- n is an integer greater than 1.
Dependencies are inferred from the claim text.