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Polyamic Alkyl Ester System Promising for Side-Chain Electro-Optic Polymer
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- Authors
- Seung Koo Park, Jung Yun Do, Jung Jin Ju, Sun Tak Park, Min Su Kim, Myung Hyun Lee
- Issue Date
- 2006-09
- Citation
- Reactive and Functional Polymers, v.66, no.9, pp.974-983
- ISSN
- 1381-5148
- Publisher
- Elsevier
- Language
- English
- Type
- Journal Article
- Abstract
- A polyamic alkyl ester was examined for the first time as a new candidate for an electro-optic (EO) polymer. Disperse Red 1 was easily introduced into a polyamic acid synthesized from 2,2-bis(4-aminophenyl)hexafluoropropane and oxydiphthalic anhydride by the Mitsunobu reaction. The EO polyamic alkyl ester film is amorphous. The dipole orientation in the film is slightly aligned without a poling process, showing ~5 pm/V. The best poling temperature is ca. 145 °C with regard to a rearrangement of the EO polyamic alkyl ester into the corresponding polyimide. The EO coefficient of the poled film is around 25 pm/V at a wavelength of 1.55 μm when the film is poled with an applied voltage of 150 V/μm. The EO signal is thermostable. © 2006 Elsevier B.V. All rights reserved.
- KSP Keywords
- 2-bis, Alkyl ester, Dipole orientation, Disperse red 1, EO coefficient, Electro-optic polymer, Mitsunobu reaction, Poling process, Polyamic acid, Side-chain, applied voltage