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化学学报
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化学学报 ›› 1998, Vol. 56 ›› Issue (11): 1041-1047.    下一篇

研究论文

TX-100胶束中光解萘醌自由基的电子自旋极化研究

陆同兴;李干佐;李锡忠;孙文斌;吴奇   

  1. 安徽师范大学物理系;山东大学.济南(250100);国家教委胶体和界面化学开放 室;香港中文大学化学系
  • 发布日期:1998-11-15

The TRESR study of the naphthoquinone radicals photolytically generated in TX-100 micelle

Lu Tongxing;Li Ganzuo;Li Xizhong;Sun Wenbin;Wu Qi   

  1. Shandong Univ..Jinan(250100)
  • Published:1998-11-15

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利用高时间分辨的电子自旋共振波谱仪(TRESR),研究了含有不同表面活性剂溶液中光解萘醌自由基CIDEP。在乙二醇溶剂中,在308nm的紫外激光照射下得到三重态机理极化的中性萘半醌自由基和以碳为中心的自由基R^.(OH)~2的信号,在表面活性剂TX-100的胶束中,得到萘醌阴离子自由基信号,并用萘醌分子与TX-100胶束间的电子转移进行解释。

关键词: 化学诱导动态电子极化, 电子自旋共振谱法, 游离基, 萘醌, 光解, 胶束, 表面活性剂, 电子转移反应, 其它基金

Effects of the photolytically generated naphthoquinone radicals in the solutions containing different surfactants were studied by using the time-resolved ESR spectroscopy. In the ethylene glycol solvent the CIDEP effects of the naphthosemiquinone radical and ethylene glycol ketyl radical after irradiation at 308nm were observed due to triplet mechanism (TM). In the TX-100 micelle solution, the signals of the spin polarization of the naphthoquinone anion were observed, which was attributed to the electron transition between the polarized triplet of the naphthoquinone and TX-100 micelle.

Key words: CHEMICALLY INDUCED DYNAMIC ELECTRON POLARIZATION (CIDEP), ELECTRON SPIN RESONANCE SPECTROMETRY, FREE RADICAL, NAPHTHOQUINONE, PHOTOLYSIS, MICELLE, SURFACTANTS, ELECTRON TRANSFER REACTION

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