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Complexation Between Rare Earth Metals and 1, 5-di(2-hydroxy-5-sulfophenyl)-3- Cyanoformazan Occurring on Cetyltrimethylammonium Bromide Micelle

L-X. Zheng^a, H-W. Gao^b,* and R-Y. Xue^c

^aSchool of Occupation Training, Anhui University of Science and Technology, Huainan, 232007, P. R. China
^bSchool of Enviromental Science and Engineering, Tongji University, Shanghai, 200092, P. R. China
^cShandong Dacheng Pesticide Co. Ltd, Zibo, 255000, P. R. China

The microsurface adsorption-spectral correction technique (MSASC) has been applied to investigation of the ternary interaction of 1,5-di(2-hydroxy-5-sulfophenyl)-3-cyanoformazan (DHSPCF) with cetyltrimethylammonium bromide (CTAB) and rare earths Y, Eu, Dy and Yb. The CTAB micelle enriched DHSPCF molecules on its microsurface in monolayers and then sensitized the complexation between rare earths and DHSPCF. The binary aggregate and the ternary complex both were characterized.

Keywords: MSASC Langmuir aggregation, 1,5-di(2-hydroxy-5-sulfophenyl)-3-cyanoformazan, Cetyltrimethylammonium bromide, Rare earths, Ternary complex