在中红外光谱中对C60+和C120+进行光谱分析
Miriam Kappe1, Arne Schiller1,2, Elisabeth Gruber1
1Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstr. 25, A-6020 Innsbruck, Austria.
The Journal of chemical physics
|November 27, 2023
概括
研究人员使用信使光谱学研究了C60+和C120+富勒烯离子的红外光谱. 对C60+和C120+观察到新的电子过渡,C120+显示出花生状结构.
科学领域:
- 物理化学 物理化学
- 频谱学是一种光谱学.
- 计算化学的计算化学
背景情况:
- 富勒,特别是C60,是具有独特电子性质的重要碳类.
- 了解充电富勒离子 (富勒) 的特性对于各种应用至关重要.
- 信使光谱为探测离子的振动和电子状态提供了一个强大的工具.
研究的目的:
- 报告和分析C60+和C120+离子的红外光谱.
- 调查C60+和C120+中的电子吸收转换.
- 为了确定C120+的结构性质.
主要方法:
- 信使光谱学被用来获得红外光谱.
- 实验结果与时间依赖密度函数理论 (TD-DFT) 的计算进行了比较.
- 分析了振动特征,以推断结构信息.
主要成果:
- 对于C60+在其振动频谱以上的电子过渡所赋予的新的吸收特征被观察到.
- 对于C60+而言,这些转换可能涉及通过振动合和Jahn-Teller效应激发到低电子状态 (2E1u,2E2u).
- 获得了C120+的第一个振动光谱,揭示了由两个联的C60单元形成的花生形结构的特征.
- 电子过渡也被确定为C120+.
结论:
- 这项研究为C60+和C120+的电子和振动特性提供了新的见解.
- 这些发现支持C60+电子转换的理论预测,并揭示了C120+的结构.
- 信使光谱对于表征复杂的烯离子是有效的.
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