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Enhanced chemiluminescence of peroxomonosulfate–cobalt (II) system in the presence of dicarboxylic acids
Author(s) -
Zhou Yun,
Ogawa Nobuaki,
Lin JinMing
Publication year - 2011
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.1225
Subject(s) - dicarboxylic acid , chemistry , chemiluminescence , singlet oxygen , cobalt , photochemistry , medicinal chemistry , polymer chemistry , organic chemistry , oxygen
In the present work, the effects of molecular mass aliphatic dicarboxylic acids on the HSO 5 ‐ –Co 2+ chemiluminescence (CL) system were investigated. It was found that the aliphatic dicarboxylic acids could enhance the CL of the HSO 5 ‐ –Co 2+ system. Moreover, the CL intensities improved regularly with increasing carbon chain length of the dicarboxylic acids. To investigate the CL enhancement mechanism, dynamic profiles, CL spectroscopy, ESR spectrum and the effects of various free radical scavengers on the CL system were employed. The results indicated that the enhancement of the CL should be attributed to the formation of peroxo‐diacid, which finally decomposed to the original dicarboxylic acid and singlet oxygen. The mechanism of the HSO 5 ‐ –Co 2+ ‐dicarboxylic acid CL system was then proposed. Copyright © 2010 John Wiley & Sons, Ltd. Copyright © 2010 John Wiley & Sons, Ltd.