Photoluminescence Spectra in Polycrystals of Chirally Pure and Racemic Phases of Tryptophan


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Abstract

The photoluminescence spectra of three crystalline phase modifications of aromatic amino acid tryptophan are compared: the left phase of L-tryptophan, the right phase of D-tryptophan, and the racemic phase of DL-tryptophan. The photoluminescence spectra were recorded using a fiber-optic procedure, a small-size FSD-8 spectrometer, and a data processing system that enables comparison of the analyzed spectrum with the spectrum of a reference substance. Photoluminescence was excited by a pulsed-periodic ultraviolet laser at a wavelength of 266 nm.

About the authors

V. S. Gorelik

Lebedev Physical Institute

Author for correspondence.
Email: gorelik@sci.lebedev.ru
Russian Federation, Moscow, 119991

M. F. Umarov

Vologda State University

Email: gorelik@sci.lebedev.ru
Russian Federation, Vologda, 160000

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