2003年5月
Electrophoretic analysis of quinone anion radicals in acetonitrile solutions using an on-line radical generator
ELECTROPHORESIS
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- ,
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- 巻
- 24
- 号
- 10
- 開始ページ
- 1635
- 終了ページ
- 1640
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1002/elps.200305395
- 出版者・発行元
- WILEY-V C H VERLAG GMBH
We have investigated analysis of anion radicals of phenanthrenequinone (PhQ) and anthraquinone (AQ) using acetonitrile-capillary electrophoresis (CE) under anaerobic conditions. PhQ and AQ have relatively high negative reduction potentials meaning that their anion radicals are re-oxidized quite readily by the surrounding O-2 to disappear during analysis and we failed to detect them with our previous system. In this work, we have developed an on-line system combining a unique electrolysis cell for generation of the radicals and a CE unit to keep the analysis system free from external O-2 molecules and to reduce analysis time remarkably. As a result, electrophoretic detection of the anion radicals of PhQ and AQ has been achieved. Furthermore, we have observed hydrogen-bonding interaction between the anion radicals and dimethylurea (DMU) using the present system and have indicated a characteristic interaction of the anion radical of PhQ as an ortho-quinone with DMU.
- リンク情報
- ID情報
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- DOI : 10.1002/elps.200305395
- ISSN : 0173-0835
- Web of Science ID : WOS:000183242700017