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Chiroptical Properties in Thin Films of π-Conjugated Systems.
Chemical Reviews ( IF 51.4 ) Pub Date : 2020-09-05 , DOI: 10.1021/acs.chemrev.0c00195 Gianluigi Albano 1 , Gennaro Pescitelli 1 , Lorenzo Di Bari 1
Chemical Reviews ( IF 51.4 ) Pub Date : 2020-09-05 , DOI: 10.1021/acs.chemrev.0c00195 Gianluigi Albano 1 , Gennaro Pescitelli 1 , Lorenzo Di Bari 1
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Chiral π-conjugated molecules provide new materials with outstanding features for current and perspective applications, especially in the field of optoelectronic devices. In thin films, processes such as charge conduction, light absorption, and emission are governed not only by the structure of the individual molecules but also by their supramolecular structures and intermolecular interactions to a large extent. Electronic circular dichroism, ECD, and its emission counterpart, circularly polarized luminescence, CPL, provide tools for studying aggregated states and the key properties to be sought for designing innovative devices. In this review, we shall present a comprehensive coverage of chiroptical properties measured on thin films of organic π-conjugated molecules. In the first part, we shall discuss some general concepts of ECD, CPL, and other chiroptical spectroscopies, with a focus on their applications to thin film samples. In the following, we will overview the existing literature on chiral π-conjugated systems whose thin films have been characterized by ECD and/or CPL, as well other chiroptical spectroscopies. Special emphasis will be put on systems with large dissymmetry factors (gabs and glum) and on the application of ECD and CPL to derive structural information on aggregated states.
中文翻译：
π共轭体系薄膜的手性。
手性π共轭分子为电流和透视应用提供了具有突出特征的新材料，特别是在光电器件领域。在薄膜中，诸如电荷传导，光吸收和发射的过程不仅取决于单个分子的结构，而且还很大程度上取决于其超分子结构和分子间的相互作用。电子圆二色性ECD及其发射形式的圆偏振发光CPL为研究聚集态和设计创新器件所需的关键特性提供了工具。在这篇综述中，我们将全面介绍在有机π共轭分子薄膜上测得的手性。在第一部分中，我们将讨论ECD，CPL，和其他手性光谱学，重点是它们在薄膜样品中的应用。在下文中，我们将概述现有的有关手性π共轭体系的文献，该体系的薄膜已通过ECD和/或CPL表征，以及其他手性光谱学。将特别强调具有大不对称因子的系统（g abs和g lum）以及应用ECD和CPL导出有关聚合状态的结构信息。
更新日期：2020-09-23
中文翻译：
π共轭体系薄膜的手性。
手性π共轭分子为电流和透视应用提供了具有突出特征的新材料，特别是在光电器件领域。在薄膜中，诸如电荷传导，光吸收和发射的过程不仅取决于单个分子的结构，而且还很大程度上取决于其超分子结构和分子间的相互作用。电子圆二色性ECD及其发射形式的圆偏振发光CPL为研究聚集态和设计创新器件所需的关键特性提供了工具。在这篇综述中，我们将全面介绍在有机π共轭分子薄膜上测得的手性。在第一部分中，我们将讨论ECD，CPL，和其他手性光谱学，重点是它们在薄膜样品中的应用。在下文中，我们将概述现有的有关手性π共轭体系的文献，该体系的薄膜已通过ECD和/或CPL表征，以及其他手性光谱学。将特别强调具有大不对称因子的系统（g abs和g lum）以及应用ECD和CPL导出有关聚合状态的结构信息。
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