| 几种氮氧自由基与β-环糊精及其衍生物作用的EPR研究 |
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| 引用本文： | 彭晓霞,张有明,汪汉卿.几种氮氧自由基与β-环糊精及其衍生物作用的EPR研究[J].波谱学杂志,2006,23(1):89-94. |
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| 作者姓名： | 彭晓霞 张有明 汪汉卿 |
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| 作者单位： | 甘肃中医学院，甘肃 兰州 730000 |
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| 基金项目： | 国家自然科学基金资助项目(29971026)，甘肃省教委立项课题(200203). |
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| 摘 要： | 测定了三种氮氧自由基与环糊精相互作用的EPR波谱，计算了波谱参数. 结果表明：与环糊精作用后，自由基的超精细分裂常数(an) 值及旋转相关时间(τc)都有规律变化，由此探讨了氮氧自由基与环糊精相互作用位点及作用力大小.
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| 关 键 词： | EPR 包合作用 环糊精 氮氧自由基 |
| 文章编号： | 1000-4556（2006）01-0089-06 |
| 收稿时间： | 2005-06-22 |
| 修稿时间： | 2005-09-05 |
Inclusion Complexes of Nitroxide Radicals with β-Cyclodextrin and 2- Hydroxypropyl β-Cyclodextrin in Aqueous Solution Studied by EPR Spectroscopy |
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| PENG Xiao-xia,ZHANG You-ming,WANG Han-qing.Inclusion Complexes of Nitroxide Radicals with β-Cyclodextrin and 2- Hydroxypropyl β-Cyclodextrin in Aqueous Solution Studied by EPR Spectroscopy[J].Chinese Journal of Magnetic Resonance,2006,23(1):89-94. |
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| Authors: | PENG Xiao-xia ZHANG You-ming WANG Han-qing |
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| Institution: | Gansu College of Traditional Chinese Medicine, Lanzhou, Gansu 730000, China |
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| Abstract: | It was found in this study that the ESR spectra of three nitroxide radicals, 4-hydroxy-2,2,6,6-tetramethyliperidine-1-oxyl (R1), 4-azido-2,2,6,6- tetramethyliperdine-1-oxyl (R2) and 4-oxybenzene-sulfonyl-2,2,6,6-tetramethyliperidene-1-oxyl (R3), show distinctive changes in rotational correlation time τC and hyperfine splitting constants aN when included in β-cyclodextrin (β-CD) and 2-hydroxypropyl-β-CD in aqueous solution. Based on the EPR results, it is suggested that the steric factors and polarity of the functional groups affect the inclusion reaction. |
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| Keywords: | EPR inclusion complexes cyclodextrin nitroxide radical |
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