Abstract
Novel nonlinear optical chromophore with strong electron donor and isolation groups on both sides were synthesized and characterized by mass spectrum and hydrogen nuclear magnetic resonance. Electro-optical polymers with different chromophore loading densities were prepared and showed us good thermal stabilities, all of their thermal decomposition temperature were higher than 250°C. Large EO coefficients were also obtained by second harmonic generation method 29, 47, and 72 pm/V for PU-C10, PU-C15, and PU-C20, respectively. Solvatochromism of polymer PU-C10 was also studied; the result indicated us that this kind of polymers could be used as solvent polarity indicator material.
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