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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 5, Number 5
May 20, 1984 

Associtation of Methyl Viologen and Its Cationic Radical with Sodium Dodecyl Sulfate
Joon Woo Park, Hye-L. Nam
The polarographic and conductometric studies of methyl viologen (MV++) solutions with varying concentration of sodium dodecyl sulfate (SDS) showed strong association of MV++ and its cationic radical, MV+·, with SDS below the critical micelle concentration. The stoichiometries of these associations were found to be their electric charge ratios. Both electrostatic and hydrophobic interactions were found to contribute to the associations. The formation constant of MV+·DS- in 0.1 M NaCl was 7×103 M. The MV++-SDS association was observed to be cooperative leading to formation of large aggregates. In the presence of MV++, the micellization of SDS was formation of SDS homo-micelle without direct involvement of MV++.
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