Measurement of Vibrational Circular Dichroism below ∼600 cm−1: Progress towards Meeting the Challenge
Measurement of Vibrational Circular Dichroism below ∼600 cm−1: Progress towards Meeting the Challenge
复制标题
〜600 cm−1以下振动圆二色性的测量：应对挑战的进展
DOI：
10.1366/0003702963905826
复制
发表时间：
1996
影响因子：
3.5
通讯作者：
Zhengyu Deng
中科院分区：
文献类型：
--
作者：
P. Polavarapu;Zhengyu Deng
测量低于~ 600 cm−1的振动圆二色性（VCD）是当前时代的实验挑战之一。偏振干涉测量被认为是实现这些测量最有效的方法。分束器是这种干涉测量技术成功应用的关键部件，它根据偏振度划分入射光束。独立金属线和沉积在聚酯基板上的金属线被用作分束器，它们的性能已经在~ 700-10 cm−1区域进行了评估。给出了α-蒎烯对映体在400-250 cm−1区域的VCD测量结果。综述了常规远红外VCD测量的现状和未来需要发展的方向。
The measurement of vibrational circular dichroism (VCD) below ∼600 cm−1 is one of the experimental challenges of the current times. Polarization-division interferometry is considered to be the most efficient approach for realizing these measurements. A crucial component for successful applications of this interferometry is the beamsplitter, which divides the incoming beam according to polarization. Free-standing metal wires and the metal wires deposited on a mylar substrate have been employed as beamsplitters, and their performance has been evaluated for the ∼700–10 cm−1 region. VCD measurements obtained for the enantiomers of α-pinene in the 400–250 cm−1 region are presented. The current status and future developments needed for routine far-infrared VCD measurements are summarized.