{"title":"利用电子顺磁共振波谱鉴别和分析 4-哌啶甲酸辐射敏感性的研究","authors":"Kerem Sütçü","doi":"10.1007/s00723-024-01641-3","DOIUrl":null,"url":null,"abstract":"<div><p>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 –CH<sub>2</sub>ĊCH<sub>2</sub>CH<sub>2</sub>– (radical I) and –ĊHN– (radical II) radicals within the 4PCA compound. Hyperfine structure constants and <i>g</i> 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.</p></div>","PeriodicalId":469,"journal":{"name":"Applied Magnetic Resonance","volume":"55 5","pages":"537 - 549"},"PeriodicalIF":1.1000,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A Study to Identify and Analyze the Radiosensitivity of 4-Piperidinecarboxylic Acid Using Electron Paramagnetic Resonance Spectroscopy\",\"authors\":\"Kerem Sütçü\",\"doi\":\"10.1007/s00723-024-01641-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>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 –CH<sub>2</sub>ĊCH<sub>2</sub>CH<sub>2</sub>– (radical I) and –ĊHN– (radical II) radicals within the 4PCA compound. Hyperfine structure constants and <i>g</i> 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.</p></div>\",\"PeriodicalId\":469,\"journal\":{\"name\":\"Applied Magnetic Resonance\",\"volume\":\"55 5\",\"pages\":\"537 - 549\"},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2024-02-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Magnetic Resonance\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s00723-024-01641-3\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"PHYSICS, ATOMIC, MOLECULAR & CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Magnetic Resonance","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1007/s00723-024-01641-3","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, ATOMIC, MOLECULAR & CHEMICAL","Score":null,"Total":0}
A Study to Identify and Analyze the Radiosensitivity of 4-Piperidinecarboxylic Acid Using Electron Paramagnetic Resonance Spectroscopy
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.
期刊介绍：
Applied Magnetic Resonance provides an international forum for the application of magnetic resonance in physics, chemistry, biology, medicine, geochemistry, ecology, engineering, and related fields.
The contents include articles with a strong emphasis on new applications, and on new experimental methods. Additional features include book reviews and Letters to the Editor.
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