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학술지 Synthesis and Optical Nonlinearity of Thermally Stable Polyimides Incorporated with Electro-Optic Chromophore as Side Chain
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저자
주현경, 임종선, 윤성철, 이창진, 최동훈, 박승구, 김동욱
발행일
200703
출처
Macromolecular Symposia, v.249-250, pp.21-28
ISSN
1022-1360
출판사
John Wiley & Sons
DOI
https://dx.doi.org/10.1002/masy.200750304
협약과제
07MB2400, 휴대 단말기용 나노 플렉스블 광전배선 모듈, 주정진
초록
We prepared thermally durable nonlinear optical (NLO) polymers, based on a polyimide attached with a NLO chromophore as a side-chain. The polyimide with two aromatic hydroxyls in the repeat unit was prepared by condensation polymerization between 2,2-bis(3-amino-4-hydroxyphenyl) hexafluoropropane and oxydiphthalic anhydride in DMAc, followed by imidization reaction. Mitsunobu coupling was carried out to incorporate the NLO chromophore into the polyimide backbone, to yield the side-chain polymer with a loading level of the chromophore up to 65 wt%. The thermal characterization of the polymer showed that the NLO polyimide had Tg at 168°C and was thermally stable up to 370°C. The polymer solution was spin coated on the ITO glass to produce an optical quality film. The electro-optic coefficient of the film was obtained using 1.55 μm laser source, giving 31 pm/V with an electrical poling field of 1 MV/cm. The temporal stability of the polymer was confirmed over 330 h at 85°C under nitrogen condition. Copyright © 2007 WILEY-VCH Verlag GmbH & Co. KGaA.
키워드
Electro-optic modulator, Nonlinear optical polymer, Side-chain polyimide, Thermal stability
KSP 제안 키워드
2-bis, Co. KGaA, Condensation polymerization, Electrical poling, Electro-optic coefficient, ITO glass, Laser Source, NLO chromophore, Nonlinear optical, Optical nonlinearity, Optical quality