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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 30, Number 11
BKCSDE 30(11)
November 20, 2009 

Anion Recognition by a Simple Colorimetric Benzthiazole-Based Receptor
Sung Ok Kang, Quynh Pham Bao Nguyen, Taek Hyeon Kim*
Anion sensing, Color change, Deprotonation
A simple colorimetric anion chemosensor based on 2-amino-6-nitrobenzothiazole was synthesized. The addition of tetrabutylammonium (TBA) salts of F?, CH3COO?, and H2PO4? to the solution of receptor 3 caused dramatic and clearly observable color changes from light to dark yellow due to the deprotonation process which is totally different from previously reported receptors based on the same motif. According to the basicity of the anions, the sensitivity of receptor 3 towards various anions decreased in the following order: CH3COO? > F? > H2PO4?.
2735 - 2738
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