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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Stark Spectroscopy of Rubrene. I. Electroabsorption Spectroscopy and Molecular Parameters
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Stark Spectroscopy of Rubrene. I. Electroabsorption Spectroscopy and Molecular Parameters

机译：钌的纯净光谱。 I.电吸收光谱学和分子参数

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摘要

Electroabsorption spectroscopy investigation and the determination of molecular parameters for rubrene dispersed in a poly(methyl methacrylate) (PMMA) matrix are reported. The features of the band system in the absorption spectrum in PMMA are analogous to those in solutions. The changes in the electric dipole moment and the polarizability between the excited and ground states are determined from analysis of the Stark effect in the absorption band. The change in the transition dipole moment in the presence of an external electric field is also observed. Although rubrene is predicted to be classified as a nonpolar molecule, there is a contribution of the difference in the electric dipole moment between the excited and ground states to the electroabsorption spectrum. The origin of the nonzero difference in the electric dipole moment is argued. Stark fluorescence spectroscopy investigation is reported in Part II of this series.
机译：报告了电吸收光谱研究和分散在聚甲基丙烯酸甲酯（PMMA）基质中的红荧烯的分子参数的确定。 PMMA吸收光谱中的能带系统特征类似于溶液中的特征。电偶极矩的变化以及激发态和基态之间的极化率是通过分析吸收带中的斯塔克效应来确定的。还观察到在存在外部电场的情况下跃迁偶极矩的变化。尽管预计红荧烯被归类为非极性分子，但激发态和基态之间的电偶极矩差异对电吸收光谱有贡献。提出了电偶极矩非零差的起因。在该系列的第二部分中报道了Stark荧光光谱研究。

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