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X-ray radiation of poly-L-arginine hydrochloride and multilayered DNA-coatings
Authors:Agnieszka Stypczyńska  Tony Nixon  Nigel Mason
Institution:1. The Open University, Department of Physical Sciences, Walton Hall, Milton Keynes, MK7 6AA, UK
2. The Open University, Engineering and Innovation, Walton Hall, Milton Keynes, MK7 6AA, UK
Abstract:The aim of this work was to determine the chemical changes induced in thin films of the dry polypeptide poly-L-arginine hydrochloride and its mixture with calf thymus deoxyribonucleic acid (DNA) during 5 h of soft X-ray exposure. The physical and chemical effects of the soft X-ray irradiation were studied using X-ray Photoelectron Spectroscopy (XPS). Analysis of O1s, N1s and C1s features in XPS spectra reveals the existence of several routes of radiation-induced decomposition and shows quantitative and qualitative changes.
Keywords:
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