Macromolecular Research, Vol.17, No.11, 874-878, November, 2009
New Photorefractive Polymer Composites Doped with Liquid Nonlinear Optical Chromophores
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Photorefractive polymer composites were synthesized based on poly (N-vinylcazbazole) (PVK) doped with liquid nonlinear optical chromophores and a sensitizer C60. PVK/liquid NLO chromophores/C60 devices showed no signs of phase separation and did not require a plasticizer, such as ethylcarbazole. The composites showed 69% diffraction efficiency (C3) and a rapid response time of 46 ms (C1) in four-wave mixing experiments at a light intensity of 60 mW/cm2 and a wavelength of 633 nm.
Keywords:photorefractive effect;liquid nonlinear optical chromophore;plasticizer;photorefractive response time;diffraction efficiency
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