Abstract
AbstractA diversified family of 2,5-dihydrofuran derivatives has been synthesized as a new class of highly efficient and tunable electron acceptors using the single-mode focused microwave irradiation. High poling efficiency and very large electro-optic coefficients (r33 values of 128 and 116 pm/V at 1.3 μm) have been demonstrated using 2-dicyanomethylen-3-cyano-4,5,-dimethyl-5-trifluoromethyl-2,5-dihydrofuran (CF3-TCF)-based chromophores as dopant in poly(methyl methacrylate) (PMMA) and a high glass-transition temperature polyquinoline (PQ-100) respectively. Excellent dipole alignment stability has also been demonstrated in the guest/host composite at 85°C. Multi-functionalized NLO chromophores based on hydroxy containing 2,5-dihydrofuran acceptors were also synthesized through microwave methodology for further characterizations.
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