A New Scattered Circular Polarization Raman Optical Activity Instrument Equipped with a Charge-Coupled-Device Detector

Authors: Hecht, Lutz; Che, Diping; Nafie, Laurence A.

Source: Applied Spectroscopy, Volume 45, Issue 1, Pages 1-138 (January 1991) , pp. 18-25(8)

Publisher: Society for Applied Spectroscopy

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Abstract:

A simple and fully computer-controlled scattered circular polarization Raman optical activity (SCP-ROA) instrument is described which consists of a fast single monochromator and a thermoelectrically cooled charge-coupled-device (CCD) detector as the key spectral elements. A conventional circular analyzer, formed by a quartz zero-order quarter-wave plate attached to a motorized 360° rotator and a fixed linear dichroic sheet polarizer, is employed for the modulation between orthogonal circular polarization states in the scattered radiation within a right-angle scattering geometry. Well-resolved depolarized SCP-ROA spectra of (1S)-(-)-α-pinene and (R)-(+)-pulegone are presented within the wave-number region of ∼550 to 1200 cm−1 as typical examples of the excellent performance of this novel multichannel ROA instrument.

Keywords: Optical activity; Vibrational optical activity; Raman optical activity; Polarization modulation spectroscopy; Raman spectroscopy; Raman instrumentation; CCD detector

Document Type: Research article

DOI: http://dx.doi.org/10.1366/0003702914337722

Affiliations: 1: Department of Chemistry, Syracuse University, Syracuse, New York 13244-4100

Publication date: 1991-01-01

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