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首页> 外文期刊>Colloids and Surfaces, B. Biointerfaces >Reversing-pulse electric birefringence of multicomponent systems: The formulation and signal simulation for two axially symmetric components in equilibrium and the appearance of unusual signal patterns
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Reversing-pulse electric birefringence of multicomponent systems: The formulation and signal simulation for two axially symmetric components in equilibrium and the appearance of unusual signal patterns

机译：多分量系统的反向脉冲电双折射：两个轴向对称分量处于平衡状态时的表示和信号模拟以及异常信号模式的出现

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摘要

This paper consists of two parts on reversing-pulse electric birefringence (RPEB) signal patterns. The first is the theoretical formulation of two axially symmetric models coexisting in equilibrium in solution. The present RPEB theory is based on the original Tinoco–Yamaoka theory with classical electric dipole moments, which was recently modified and extended by Yamaoka, Sasai, and Kohno to include various electric and optical parameters and most importantly the ion-fluctuation dipole moment along the longitudinal direction of axially symmetric molecules. The theory contains the electric polarizability anisotropy Δα′, which can be either positive or negative in relation to the shape of components. The overall signal can be expressed as the sum of the fractions of two components in proportions to the coefficient F1 or F2 (=1 - F1). The second part is the simulation of theoretical RPEB curves for the two-component system with various sets of electric and hydrodynamic parameters for hypothetical but interesting cases. In consideration of the decay behavior, calculated decay curves were compared with experimentally conceivable signals, classifying them into three categories according to cases: F1 > 1, 0 < F1 < 1, and F1 < 0. Showing humps and/or dips in profiles the simulated RPEB signal in buildup and reverse transients reveals the mechanism of field orientation and electro-optic properties of molecules in solution. The ratio is the crucial factor that controls the pattern of RPEB signals. If q value of one component is positive and the other is negative, the simulated RPEB curves are characterized by three cases: q > 0, q < -1, and -1 < q < 0. If q > 0 or q < -1, the resultant patterns are often encountered with experimental signals. If -1 < q < 0, many anomalous signal patterns appears.
机译：本文由两部分组成，分别是反向脉冲双折射（RPEB）信号模式。第一个是在溶液平衡中共存的两个轴对称模型的理论表述。当前的RPEB理论是基于原始的Tinoco–Yamoka理论和经典的电偶极矩，最近，Yamaoka，Sasai和Kohno对其进行了修改和扩展，以包括各种电学和光学参数，最重要的是沿该方向的离子波动偶极矩。轴对称分子的纵向。该理论包含电极化率各向异性Δα'，其相对于组件的形状可以为正也可以为负。整个信号可以表示为与系数F1或F2（= 1-F1）成比例的两个分量的分数之和。第二部分是在假设但有趣的情况下，对具有两个组的电和水动力参数的双组分系统的理论RPEB曲线进行仿真。考虑到衰减行为，将计算出的衰减曲线与实验上可想到的信号进行比较，根据情况将其分为三类：F1> 1、0 0，q <-1和-1 0或q <-1 ，结果模式经常在实验信号中遇到。如果-1

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