Abstract
This study aims to investigate the spectroscopic, dosimetric, and stability properties of free radicals generated within 4-piperidinecarboxylic acid (4PCA) sample due to gamma irradiation within the 2–20 kGy range, utilizing electron paramagnetic resonance (EPR) spectroscopy. To achieve this goal, the EPR signals of the samples were studied in relation to microwave power, ranging from 0.01 to 50 mW, at room temperature. The investigation revealed that γ-irradiation induces the formation of –CH2ĊCH2CH2– (radical I) and –ĊHN– (radical II) radicals within the 4PCA compound. Hyperfine structure constants and g values were also determined for the radicals. The optimal agreement between experimental and computed results within the dose range of 2–20 kGy was achieved using polynomial and linear functions. Experimental measurements were undertaken under varied temperature conditions (123–323 K) to study the dosimetric features of free radicals generated as a consequence of gamma irradiation. Furthermore, an investigation into the time dependency of signal intensity within the irradiated sample was conducted, with the objective of analyzing the long-term stability characteristics of the free radicals present.
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This work was supported by Grant no. ZGEF.22.003 of research Fund of Dicle University (DUBAP).
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Sütçü, K. A Study to Identify and Analyze the Radiosensitivity of 4-Piperidinecarboxylic Acid Using Electron Paramagnetic Resonance Spectroscopy. Appl Magn Reson (2024). https://doi.org/10.1007/s00723-024-01641-3
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DOI: https://doi.org/10.1007/s00723-024-01641-3