Abstract

A modified design for a Fourier-transform vibrational circular dichroism (FT-VCD) spectrometer is presented. The FT-VCD instrument is based on a Nicolet Magna-IR 550 equipped with an external bench for the measurement of VCD spectra. VCD spectra of high signal quality were obtained with 20 minutes of collection time at 4 cm -1 resolution in the mid-infrared region by conventional sequential collection of rapid-scan VCD and transmission interferograms, the simultaneous collection of these rapid-scan interferograms and step-scan collection. Of these three methods the simultaneous rapid-scan exhibited the lowest levels of noise.

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