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Show moreSecond-order nonlinear optical (NLO) polymers, which polymers are functionalized with second-order NLO chromophores, offer advantages of large susceptibilities, high laser damage threshold, faster response time, a high density of NLO moieties, versatility of molecular structural modifications, improved processability and relatively higher thermal stability compared with small molecular weight organic materials. The design, synthesis and characterization of novel elastic-polymer containing NLO chiral conjugated chromophores based on the derivatives of chiral camphorquinone, which would be expected to display large three dimensional polarity and more thermal stable NLO optical materials are discussed.
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Show moreWe prepared a series of isoregic chiral smectic polyesters based on (R)-(-)-4′-{ω-[2-(p-hydroxy-o-nitrophenyloxy)-1-propoxy]-1-alkyloxy} -4-biphenylcarboxylic acid. The head-to-tail (p-hydroxybenzoic acid) type monomers enable us to proceed the isoregically controlled polycondensation. All the monomers exhibited the chiral smectic C and nematic mesophases. The isoregic chiral smectic polyesters have good thermal stability and exhibit monolayered chiral smectic C and smectic A structures. © 1999 American Chemical Society. Appropriate credit for the requested material should be given as follows: "Reprinted (adapted) with permission from Chemistry of Materials 11:7, 1666-1671. Copyright 1999 American Chemical Society."
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