Latex spheres as carriers of surface active centers |
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| Affiliation: | 1. Institute of Nuclear Sciences, Ankara University, 06830, Ankara, Turkey;2. Faculty of Medicine, Department of Radiation Oncology, Ankara University Cebeci Hospital, Ankara, Turkey;1. Department of Materials Science, Università degli Studi di Milano-Bicocca, Milan, Italy;2. Institute of Nanoscience and Nanotechnology, National Centre for Scientific Research “Demokritos”, Athens, Greece;3. Condensed Matter Physics Laboratory, Physics Department, University of Thessaly, Lamia, Greece;4. Inter-Departmental Research Centre for the Study of Cement Materials and Hydraulic Binders (CIRCe), University of Padova, Padua, Italy;5. Department of Geosciences, University of Padova, Padua, Italy;6. Department of Cultural Heritage (DBC), University of Padova, Padua, Italy |
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| Abstract: | Poly(methyl methacrylate) spheres with surface-attached D,L-α-alanine were exposed to γ-irradiation. It was found that only one of the two known stable alanine radicals is generated on the polymer surface as a consequence of the bonding on the specific backbone group. The sensitivity of ESR spectroscopy for the determination of extremely small numbers of reactive sites was demonstrated. |
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