傅里叶变换近红外振动圆二色性至6150厘米⁻¹的观测。

Observation of Fourier transform near-infrared vibrational circular dichroism to 6150 cm-1.

作者信息

Nafie Laurence A, Dukor Rina K, Roy Jean-René, Rilling Allan, Cao Xiaolin, Buijs Henry

机构信息

Department of Chemistry, Syracuse University, Syracuse, New York 13244-4100, USA.

出版信息

Appl Spectrosc. 2003 Oct;57(10):1245-9. doi: 10.1366/000370203769699108.

DOI:10.1366/000370203769699108

PMID:14639752

Abstract

We report here the first measurement of near-infrared (NIR) vibrational circular dichroism (VCD) with Fourier transform (FT) instrumentation. The measurements were carried out using a commercial rapid-scan FT-IR VCD spectrometer modified for operation in the NIR region between 3750 and 6150 cm-1. Overtone and combination band VCD intensities, first reported by Keiderling and Stephens using dispersive VCD instrumentation in 1976, were reproduced with equivalent signal quality and spectral resolution using collection times of only a few minutes. These results offer substantial promise for the routine use of rapid-scan FT instrumentation for the measurement of overtone and combination band VCD spectra in the NIR region.

摘要

我们在此报告首次使用傅里叶变换（FT）仪器对近红外（NIR）振动圆二色性（VCD）进行的测量。测量是使用一台经过改装的商用快速扫描傅里叶变换红外VCD光谱仪进行的，该光谱仪可在3750至6150 cm-1的近红外区域运行。1976年，凯德林和斯蒂芬斯首次使用色散VCD仪器报告了泛音和组合带VCD强度，此次使用仅几分钟的采集时间就以等效的信号质量和光谱分辨率再现了这些强度。这些结果为常规使用快速扫描傅里叶变换仪器测量近红外区域的泛音和组合带VCD光谱提供了巨大的前景。