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Hyper-Rayleigh scattering as a screening tool for the optimization of piezoelectric polymers

机译:超瑞利散射作为优化压电聚合物的筛选工具

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The use of piezoelectric polymers has been proposed and investigated in different Space-related environments, for example, as ultra-light mirrors in space telescopes or as piezoelectric actuators. Even though some piezoelectric polymers have been shown to be as efficient as the more traditional piezoelectric crystals, no systematic exploration of the different molecular motives available for piezoelectricity has been performed, partly due to experimentally challenging conditions: new structures must be generated in enough quantity to be able to produce thin films, and with measurable piezoelectric response. Consequently, few structure-property relationships have been derived for the piezoelectric performance of polymer based materials. We show how, under certain conditions, the characterization of the second-order nonlinear molecular response through the Hyper-Rayleigh scattering technique, can be used as a screening technique for the optimization of the piezoelectric response of poled-doped materials. In contrast to the piezoelectric characterization, a Hyper-Rayleigh experiment can be performed with minimal amounts of chromophores (~mg) in solution, and is relatively quick. Therefore, we propose to use the Hyper-Rayleigh scattering technique as a screening tool for the search of optimized piezoelectric polymers.
机译:已经提出并在不同的与空间有关的环境中研究了压电聚合物的使用,例如,作为空间望远镜中的超光镜或压电致动器。即使已显示某些压电聚合物与更传统的压电晶体一样有效,但由于对实验的挑战性条件,部分原因是:对于产生压电的不同分子动机,尚未进行系统的探索:必须产生足够数量的新结构能够生产薄膜,并具有可测量的压电响应。因此,对于基于聚合物的材料的压电性能,几乎没有结构-属性关系。我们展示了如何在特定条件下通过Hyper-Rayleigh散射技术表征二阶非线性分子响应,可以用作筛选技术,以优化极化掺杂材料的压电响应。与压电表征相反,可以在溶液中用最少的发色团(〜mg)进行Hyper-Rayleigh实验,而且实验相对较快。因此,我们建议使用Hyper-Rayleigh散射技术作为筛选工具,以搜索优化的压电聚合物。

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