波谱学杂志 ›› 1989, Vol. 6 ›› Issue (4): 453-460.

• 研究论文 • 上一篇    下一篇

样品介电性质对ST-ESR谱的影响

项柏松, 陈炳焕, 万谦   

  1. 中国科学院生物物理所
  • 收稿日期:1988-10-05 出版日期:1989-12-05 发布日期:2018-01-22

THE EFFECTS OF THE DIELECTRIC PROPERTY OF SAMPLES ON ST-ESR SPECTRA

Xiang Bosong, Chen Binhuan, Wan Qian   

  1. Institute of Biophysics, Academia Sinica
  • Received:1988-10-05 Online:1989-12-05 Published:2018-01-22

摘要: 作者直接观察了由于样品介电性质不同造成的ST-ESR谱的差异,接着尝试采用"功率补偿"方法消除这种差异及其造成的τC量误差.作者还研究了在ST-ESR谱对τC的整个敏感范围内样品介电性质的作用.结果表明,在ST-ESR方法的实际应用中,样品介电性质作用造成的τC测量误差较大,需要采用"功率补偿"方法消除这种误差.

关键词: ESR, 自旋标记, 旋转相关时间, ST-ESR

Abstract: We observed the difference between the ST-ESR spectra caused by the difference of the dielectric properties of the samples directly. Then we tried to eliminate these differences and the error of the measured τC caused by them by using the "power compensation" method. We also studied the effects of the dielectric property of the sample in the whole range in which the ST-ESR spectra are sensitive to τC. The results show that the error of the measured τC is large and it is necessary to eliminate the error by using the "power compensation" method when we make use of the ST-ESR method.

Key words: ESR, Spin labeling, Rotational correlation time, ST-ESR