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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 29, Number 12
BKCSDE 29(12)
December 20, 2008

Title	Electrochemical and ¹⁹F NMR Detection of Anions, Ion-pairs, and a Zwitterionic Amino Acid with a Ferrocene-based Hetero-ditopic Receptor Bearing o-(Carboxamido)trifluoroacetophenone and Crown-ether Ligands
Author	Hidekazu Miyaji, Dae Sik Kim, Byoung Yong Chang, Su Moon Park, Kyo Han Ahn*
Keywords	Electrochemical detection, Anions, Ion-pairs, Zwitterionic amino acid, o-(Carboxamido)trifluoroacetophenone
Abstract	Described are the electrochemical and ¹⁹F NMR detection of anions, ion-pairs, and zwitterionic L-phenylalanine with the ferrocene-based hetero-ditopic receptor. A cyclic voltammetric study shows that the receptor induces a positive shift in the ferrocene oxidation potential upon binding of a potassium cation, whereas it induces a negative shift upon binding of an acetate anion, both of which can be reversed. Also, the redox potential shifts were dependent on ion-pairing interactions. Furthermore, direct detection of an amino acid in its zwitterionic form is demonstrated by ¹⁹F NMR spectroscopy in aqueous media.
Page	2355 - 2360
Full Text	PDF

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