Study of 29Si MAS NMR Spectroscopy and Electro-Optic Property Based on Polyimide/SiO2

doi:10.7517/j.issn.1674-0475.2006.01.55

Abstract

Abstract: The fluorine-containing polyimides with nonlinear optical were synthesized using the monomers 2,2-bis(3-amino-4-hydroxy phenyl) hexafluoropropane (6FHP), 4,4’-(hexafluoroiso-propylidene) diphthalic anhydride (6FDA) or pyromellitic dianhydride (PMDA) and Dispered Red 1 (DR1) as an active chromophore. The hybrid materials were obtained with Sol-Gel technique. ²⁹Si nuclear magnetic resonance spectroscopy were used to characterize the structure of the polyimide/SiO₂ hybrid. The results revealed that Q³, Q⁴ and T³ were the major microstructure forming a network structure. The electro-optic coefficients of nonlinear optical polymers and hybrids were measured by attenuated-total-reflection (ATR) technique. They were 32,28,34 and 29 pm/V, separately. Their results showed that they had high EO coefficients.

Key words: polyimide, hybrid, ²⁹Si nuclear magnetic resonance spectrometry, electro-optic property

CLC Number:

TQ455

QIU Feng-xian, ZHOU Yu-ming, LIU Ju-zheng, ZHANG Xu-ping. Study of ²⁹Si MAS NMR Spectroscopy and Electro-Optic Property Based on Polyimide/SiO₂[J]. Imaging Science and Photochemistry, 2006, 24(1): 55-60.

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Study of ²⁹Si MAS NMR Spectroscopy and Electro-Optic Property Based on Polyimide/SiO₂

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