Formation and stabilization of radical pairs in the quinone-pyrocatechol-polymer system |
| |
| Authors: | A. I. Aleksandrov T. B. Chenskaya A. I. Prokof'ev N. N. Bubnov A. A. Dubinskii E. V. Gal'tseva I. A. Aleksandrov Ya. S. Lebedev |
| |
| Affiliation: | (1) Institute of Synthetic Polymer Materials, Russian Academy of Sciences, 70 ul. Profsoyuznaya, 117393 Moscow, Russian Federation;(2) A. N. Nesmeyanov Institute of Organoelment Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 117813 Moscow, Russian Federation;(3) N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, 4 ul. Kosygina, 117977 Moscow, Russian Federation |
| |
| Abstract: | The formation of radical pairs (RP) in solid mixtures of 3,6-di-tert-butyl-o-quinones (Q) and 3,6-di-tert-butylpyrocatechol (QH2) under the action of shock-wave (SW) pulses was studied by ESR and IR spectroscopy. The radical pairs are formed only when a threshold value of SW power is achieved. The generation of RP is preceded by the formation of hydrogen-bonded associates QH2…Q upon intimate mixing and fine dispergation of the reagents in a SW field. The incorporation of the reagents into a polymeric matrix favors the formation of associates and stabilization of the pairs, which leads to a decrease in the SW power threshold. Deceased. Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 8, pp. 1464–1467, August, 1997. |
| |
| Keywords: | radical pairs hydrogen bond ESR, IR spectroscopy shock wave |
| 本文献已被 SpringerLink 等数据库收录！ |
|
