| 聚二乙炔链振动谱的研究 |
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| 引用本文： | 杨慧. 聚二乙炔链振动谱的研究[J]. 原子与分子物理学报, 2005, 22(1): 53-56 |
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| 作者姓名： | 杨慧 |
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| 作者单位： | 贵州省毕节师专物理系,毕节,551700 |
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| 基金项目： | 贵州省教育厅自然科研项目(批准号:黔教科2004224) |
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| 摘 要： | 将聚二乙炔主链简化为有限的一维复式碳原子链,利用经典的晶格动力学方法研究了其色散关系.聚二乙炔链色散关系曲线由一支声学模和三支光学模组成,它们在波矢为零处及Brillouin zone(BZ)边界处拉开了间隙,弹性力常数的变化将显著地改变带宽和能隙.
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| 关 键 词： | 聚二乙炔 动力矩阵 振动谱 |
| 文章编号： | 1000-0364(2005)01-0053-04 |
| 收稿时间： | 2004-03-01 |
A study of the vibrational spectra of polydiacetylenes |
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| YANG Hui. A study of the vibrational spectra of polydiacetylenes[J]. Journal of Atomic and Molecular Physics, 2005, 22(1): 53-56 |
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| Authors: | YANG Hui |
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| Abstract: | In this paper, the polydiacetylenes chain may be simplified as the one-dimensional finite compound lattice model. Using the method of classical lattice dynamics, the dispersion relation of the polydiacetylenes is investigated. The results show that the dispersion curve of polydiacetylenes consists of an acoustic branch and three optical branches which occur the gaps under the wave vector k=0 and the Brillouin zone (BZ) as well, and the difference of the elastic force constants has an effect on the gaps of branches and the bandwidth obviously. |
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| Keywords: | Polydiacetylenes Dynamic matrix Vibrational spectra |
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