Effects of aminoacids on the autooxidation of 3,5-di-tert-butylcatechol in the presence of surface-active copper(II) complexes.
The rate of autooxidation of 3,5-di-tert-butylcatechol (3,5-DTBC) in the presence of micelles formed from mixing equal concentrations of [Cu(C(12)-tmed)Br(2)] (where C(12)-tmed is N,N,N'-trimethyl-N'-dodecylethylenediamine) and several amino acids has been investigated. It was found that the rate in air-saturated solution is very much dependent on pH, which affects the availability of copper(II) coordination site for the catechol and the degree of micellization. At a given pH, the rates in [Cu(C(12)-tmed)Br(2)] micellar media are greatly enhanced in the presence sodium halide.
Lim
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YY
School of Engineering and Science, Monash University (Malaysia), 2 Jalan Kolej, Bandar Sunway, 46150 Petaling Jaya, Malaysia. lim.yau.yan@engsci.monash.edu.my
Liew
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LP
D000596:Amino Acids / Q000737:chemistry*; D002396:Catechols / Q000737:chemistry*; D003300:Copper; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D010084:Oxidation-Reduction; D013501:Surface-Active Agents
D000596:Amino Acids; D002396:Catechols; D013501:Surface-Active Agents; C054068:3,5-di-tert-butylcatechol; D003300:Copper