MOLECULAR-WEIGHT DETERMINATION BY LIGHT SCATTERING
MOLECULAR-WEIGHT DETERMINATION BY LIGHT SCATTERING
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DOI：
10.1021/j150451a002
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发表时间：
1947-01-01
期刊：
影响因子：
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通讯作者：
DEBYE, P
中科院分区：
文献类型：
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作者：
DEBYE, P
非吸收性气体或液体不是完全透明的，而是散射光。这种光的主要部分没有改变其波长，对应于拉曼效应的位移谱线的强度的分数很小，并且频率的变化对于以下考虑是不重要的。散射是由于不均匀的分子结构，我们预计，如果溶剂是通过添加溶质更不均匀的散射强度将增加。要解决的问题是如何利用散射光强度的增加来计算溶质粒子的数量，以及在适当的情况下如何从散射光角分布的观测中得出关于溶质粒子结构的结论。
Non-absorbing gases or liquids are not perfectly transparent but scatter light. The main part of this light has not changed its wave length, the fraction of the intensity correspondingto the displaced spectral lines of the Raman effect is small, and the change in frequency is unimportant for the following considerations. The scattering is due to the non-homogeneous molecular structure, and we would expect that if a solvent is made more inhomogeneous by adding a solute the scattered intensity would increase. The question to be an-swered is how this increase in scattered intensity can be used in orderto count the number of solute particles and how in appropriate cases conclusions about the structure of such particles can be drawn from observations on the angular distribution of the scattered light.