Electric linear dichroism and birefringence of biological polyelectrolytes
Electric linear dichroism and birefringence of biological polyelectrolytes
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生物聚电解质的电线性二色性和双折射
DOI：
10.1017/s0033583500005011
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发表时间：
1988
影响因子：
6.1
通讯作者：
E. Charney
中科院分区：
文献类型：
--
作者：
E. Charney
电光取向现象由John Kerr于1875年发现，并被广泛用于确定小分子的光学偏振各向异性和光信号的高速传输。至少从 1950 年起就开始对生物聚合物进行测量，但直到最近十年才产生了明确的结构和物理信息。在本次综述的过程中，应该显而易见的是，这种较晚发展的原因之一是分析光学数据的固有困难，这些光学数据同时取决于分子的固有光学结构特性及其在实验条件下的取向程度。对于核酸等生物聚合物来说，这个问题尤其困难，其在电场中的极化取决于其特殊的聚电解质特性。这些独特的静电特性是解释实验观察结果的一个重要特征。
The phenomenon of electro-optic orientation was discovered by John Kerr in 1875 and has been used extensively for determining the optical polarizability anisotropy of small molecules and for high-speed transmission of optical signals. Measurements on biopolymers have been made at least since 1950, but only in the last decade have these yielded definitive structural and physical information. In the course of this review, it should become obvious that among the reasons for this late development is the inherent difficulty of analysing optical data that depend simultaneously on intrinsic optical-structural properties of the molecules, and on their degree of orientation under the conditions of the experiment. The problem has been particularly difficult far biopolymers such as the nucleic acids, whose polarization in an electric field is dependent on their special polyelectrolyte properties. These unique electrostatic properties are an important feature in the interpretation of the experimental observations.
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