Acta Chimica Sinica ›› 2002, Vol. 60 ›› Issue (7): 1230-1234. Previous Articles     Next Articles

Original Articles

表面活性剂TX-100与SDBS胶束中光解苯甲醛自由基的化学诱导动态电子极化

陆同兴;涂兴华;牟建海;李干佐   

  1. 安徽师范大学物理系,芜湖(241000);山东大学,济南(250100)
  • 发布日期:2002-07-15

A CIDEP Study of Photolyzed Benzaldehyde Radicals in TX-100 and SDBS Micelles

Lu Tongxing;Tu Xinghua;Mu Jianhai;Li Ganzuo   

  1. Department of Physics, Anhui Normal University,Wuhan(241000);Key Lab for Colloid & Interface Chemistry of State Education Ministry, Shandong University,Jinan(250100)
  • Published:2002-07-15

The time-resolved electron spin resonance (TRESR) spectra and chemically induced dynamic electron polarization (CIDEP) phenomena, obtained from laser flash photolysis of benzaldehyde (BA) in ethylene glycol, SDBS and TX-100 micellar solutions, were investigated. It was shown that α-hydroxybenzyl and benzoyl radicals were generated via hydrogen abstraction of the triplet state of BA from the systems and itself. The polarization spectrum lines confirmed the radical pair mechanism (RPM) in SDBS micelles as well as the triplet mechanism (TM) in TX-100 micelles. The computer simulation of the CIDEP spectra further confirmed the generation and polarization mechanisms of the radicals.

Key words: MICELLE, BENZALDEHYDE, ESR, ETHANEDIOL, PHOTOLYSIS, POLARIZATION, FREE RADICAL

CLC Number: