| β-环糊精及其衍生物与氮氧自由基作用的ESR研究 |
| ESR Spectroscopic Studies on Interaction of β-Cyclodextrin and Mono[2-O-(2-Hydroxypropyl)]-β-Cyclodextrin with Two Nitroxide Radicals |
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| 摘要: |
| 关键词: 环糊精 氮氧自由基 ESR |
| 基金项目: |
| Abstract: Complexation of 4-azido-2,2,6,6-tetramethylpiperidine-1-oxyl (R1) and 4-oxybenzenesulfonyl-2,2,6,6-tetramethylpiperidine-1-oxyl (R2) with β-cyclodextrin (β-CD) and [2-O-(2-hydroxypropyl)]-β-cyclodextrin(2-HP-β-CD) in aqueous solution have been studied by electron spin resonance (ESR). The isotropic nitrogen hyperfine coupling constants aN and the rotational correlation time τC of the radicals change regularly after com-plexing with β-CD and 2-HP-β-CD. The magnitude of change in τC is in order: R1/2-HP-β-CD >R1/β-CD; R1/β-CD >R2/β-CD, R1/2-HP-β-CD >R2/2-HP-β-CD. |
| Keywords: cyclodextrin nitroxide radical electron spin resonance |
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| 张有明,魏太保,彭晓霞.β-环糊精及其衍生物与氮氧自由基作用的ESR研究[J].无机化学学报,2003,19(9):975-978. |
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