Abstract
WE have recently1 investigated the irradiation by ultra-violet light of amino-acids at low temperature. Preliminary results of an investigation by electron spin resonance were given. We mentioned the difficulties of a correct interpretation of the signals obtained on micro-crystalline powders of phenylalanine and tryptophan. Here are the first results of an investigation concerning solutions of aromatic amino-acids (tryptophan, phenylalanine, tyrosine).
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PTAK, M., DOUZOU, P. Examination of Optically Excited Amino-acids by Electron Spin Resonance at Very Low Temperature. Nature 199, 1092 (1963). https://doi.org/10.1038/1991092a0
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DOI: https://doi.org/10.1038/1991092a0
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