Raman reference database for organic molecules by using a Coupled-Optical Fiber Raman Spectrograph

Abstract

In this work, an overview of a reference spectral database for diverse organic molecules often used in a chemistry laboratory is shown. Obtained typical Raman signals have been well-resolved within a range from 0 to 3250 cm−1 by using a Coupled-Optical Fiber Raman Spectrograph, COFRS, performing with a sample holder for liquids connected to optical fiber in its typical configuration and an excitation wavelength of 785 ηm. This optical device works by using some spectral acquisition parameters, as integration time, signal average, boxcar or signal smoothing, detector gain and laser variable output power. These last parameter was varied in each compound due to the different purity presented for each organic molecule, and so a higher Raman signal can be obtained. We have included some of the most typical organic molecules used. Further, the main idea is to show a Raman spectral collection for rapid molecular identification of the diverse functional groups related to organic molecules.