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测定了３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作用位点及作用力大小。
The EPR spectra of three kinds of nitroxides interacting with cyclodextrins were determined and the spectral parameters were calculated. The results showed that there was a regular pattern of the aN values of the hyperfine splitting constants and the spin-related time τc Changes, which explored the role of nitrogen and oxygen free radicals and cyclodextrin sites and force size.