| 固态氮气基质中CO的红外光谱 |
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| 引用本文： | 吴磊,Ricardo Lambo,谈艳,刘安雯,胡水明. 固态氮气基质中CO的红外光谱[J]. 化学物理学报, 2014, 27(1): 5-8 |
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| 作者姓名： | 吴磊 Ricardo Lambo 谈艳 刘安雯 胡水明 |
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| 作者单位： | 中国科学技术大学合肥微尺度物质科学国家实验室(筹)，合肥230026;中国科学技术大学合肥微尺度物质科学国家实验室(筹)，合肥230026;中国科学技术大学合肥微尺度物质科学国家实验室(筹)，合肥230026;中国科学技术大学合肥微尺度物质科学国家实验室(筹)，合肥230026;中国科学技术大学合肥微尺度物质科学国家实验室(筹)，合肥230026 |
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| 摘 要： | CO单体在固体N2基质中在4.5～30 K范围内的红外吸收光谱.基本的拉伸模式的吸收特征显示其基质诱导峰宽和位移呈现弱的温度依赖性. 随着基质的温度升高，峰宽增加并且主要峰发生红移，这可能与在N2基质中CO旋转状态转变成近似于振动状态有关. 并用定量模型计算振动态之间的能量差异.
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| 关 键 词： | 声子耦合，振动弛豫，能隙定律 |
| 收稿时间： | 2013-05-23 |
Infrared Spectroscopy of CO Isolated in Solid Nitrogen Matrix |
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| Lei Wu,Ricardo Lambo,Yan Tan,An-wen Liu and Shui-ming Hu. Infrared Spectroscopy of CO Isolated in Solid Nitrogen Matrix[J]. Chinese Journal of Chemical Physics, 2014, 27(1): 5-8 |
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| Authors: | Lei Wu Ricardo Lambo Yan Tan An-wen Liu Shui-ming Hu |
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| Affiliation: | Hefei National Laboratory for Physical Science at the Microscale, University of Science and Technology of China, Hefei 30026, China;Hefei National Laboratory for Physical Science at the Microscale, University of Science and Technology of China, Hefei 30026, China;Hefei National Laboratory for Physical Science at the Microscale, University of Science and Technology of China, Hefei 30026, China;Hefei National Laboratory for Physical Science at the Microscale, University of Science and Technology of China, Hefei 30026, China;Hefei National Laboratory for Physical Science at the Microscale, University of Science and Technology of China, Hefei 30026, China |
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| Abstract: | The infrared absorption spectra of the CO monomer isolated in solid N2 have been recorded at various temperatures between 4.5 and 30 K. The absorption features of the fundamen-tal stretching mode show its linewidth and matrix-induced frequency shift to be weakly temperature-dependent. As the temperature of the matrix was raised, an increase in the linewidth together with a redshift in the central frequency was observed. These observa-tions were explained in terms of the quenching of the CO rotational states by the N2 matrix into closely-lying librational states. A quantitative model was then used to calculate the energy difference between these librational states. Results show that they can be thermally populated through the absorption of matrix phonons. |
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| Keywords: | Phonon coupling Vibrational relaxation Energy gap law |
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