کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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612460 | 1454614 | 2007 | 4 صفحه PDF | دانلود رایگان |
Tris(2,2′-bipyridine) complex of iron(II) was found to cause an increase in the chemiluminescence (CL) emission of luminol dispersed in the reversed micellar medium of cetyltrimethylammonium chloride (CTAC) in 1:1 (v/v) dichloromethane–cyclohexane/water, when the iron(II) complex in dichloromethane was mixed directly with the reversed micellar solution containing luminol. Visible absorption measurements showed that, when dispersed in the CTAC reversed micellar medium, the iron(II) complex dissociates easily. In the reverse micelle, subsequently the free iron(II) ion produced may catalyze the CL oxidation of luminol even in the absence of hydrogen peroxide. The CL emission produced under the optimized experimental conditions was detectable at a minimum iron(II) concentration of 1.0×10−9 M1.0×10−9 M using a flow injection system.
A unique ability of the [Fe(bpy)3]2+ complex to enhance the luminol chemiluminescence following the dissociation of the complex into the iron(II) ion in the CTAC reverse micelle is demonstrated.Figure optionsDownload as PowerPoint slide
Journal: Journal of Colloid and Interface Science - Volume 310, Issue 2, 15 June 2007, Pages 682–685