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http://dx.doi.org/10.5012/bkcs.2009.30.12.3057

Anionic Indicators on the Surface of Submicrospheres Consisting of Ionic Palladium(II) Complex  

Kim, Cho-Rong (Department of Chemistry, Pusan National University)
Noh, Tae-Hwan (Department of Chemistry, Pusan National University)
Yoo, Kyung-Ho (Korea Institute of Science and Technology)
Yoo, Bok-Ryul (Korea Institute of Science and Technology)
Jung, Ok-Sang (Department of Chemistry, Pusan National University)
Publication Information
Bulletin of the Korean Chemical Society / v.30, no.12, 2009 , pp. 3057-3060 More about this Journal
Abstract
Ionic palladium(II) complex, [($Me_4en)Pd(L)]_2(ClO_4)_4\;(Me_4$en = N,N,N',N'-tetramethylethylenediamine; L = bis-(4-(4-pyridylcarboxyl)phenyl)methane), allows to form a monodisperse submicrosphere without any template or additive. Surface-perchlorates on the submicrosphere have been exchanged by anionic pH indicators such as thymol blue, bromothymol blue, and bromocresol green. The ionic and amphiphilic properties of the palladium(II) complex appear to be primarily associated with the formation and easy surface-anion exchange of submicrosphere. The surface-anion exchange through the electrostatic interaction is a very good tool for the surface-modification. The color of the pH indicator-exchanged submicrospheres is very sensitive to pH and Hg$^{2+}$ cation, and thus they are promising to submicrospherical indicators.
Keywords
Amphiphilic properties; Ionic palladium(II) complex; Submicrosphere; Surface modification;
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