Abstract
New second-order nonlinear optical polyimide was synthesized by posttricyanovinylation of N-phenyl containing polyimide. The tricyanovinylation in para-position of aniline was well identified by 1H-NMR spectroscopy. The polyimide had a high glass transition temperature of 218 °C, and showed an excellent thermal stability. The electro-optic coefficient (r33 ) and nonlinear optical coefficient (d33 ) was 38 pm/V (at 0.63 μm) measured by simple reflection method and 84 pm/V (at 1.06 μm), respectively.
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Schedule a callMore From: Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
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