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首页> 外文期刊>Journal of Applied Polymer Science >Studies on second harmonic generation efficiency by a series of chiral polyesters
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Studies on second harmonic generation efficiency by a series of chiral polyesters

机译：一系列手性聚酯的二次谐波产生效率研究

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A series of optically active main-chain polyesters were synthesized by high-temperature polycondensation from biphenolic azo chromophores, (2R,3R)-(+)-diethyl tartrate and terephthaloyl chloride. The polyesters showed glass transition temperatures in the range of 100-135degreesC and were thermally stable to 350degreesC. The second harmonic generation efficiency of the polyesters was studied by the powder method and as thin films with 2-methyl-4-nitroaniline as a reference. The SHG efficiency of the polymers was compared with that of low molecular weight chromophores. The polymers with chiral units showed good second harmonic generation efficiency. The SH signal also showed good temporal stability. (C) 2003 Wiley Periodicals, Inc. [References: 15]
机译：通过双酚偶氮发色团，（2R，3R）-（+）-酒石酸二乙酯和对苯二甲酰氯的高温缩聚反应合成了一系列光学活性主链聚酯。聚酯的玻璃化转变温度为100-135℃，并且热稳定至350℃。通过粉末法研究聚酯的二次谐波产生效率，并以2-甲基-4-硝基苯胺为薄膜作为薄膜。将聚合物的SHG效率与低分子量发色团的SHG效率进行了比较。具有手性单元的聚合物表现出良好的二次谐波产生效率。 SH信号也显示出良好的时间稳定性。 （C）2003 Wiley Periodicals，Inc. [参考：15]

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