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Novel Ca2+-selective merocyanine-type chromoionophore derived from calix[4]arene-diamide
- Authors
- Kim, Eun Jin; Choe, Jong-In; Chang, Suk-Kyu
- Issue Date
- Jul-2003
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- chromogenic ionophore; calix[4]arene diamide; merocyanine; Ca2+-selectivity; pH indicator
- Citation
- TETRAHEDRON LETTERS, v.44, no.28, pp 5299 - 5302
- Pages
- 4
- Journal Title
- TETRAHEDRON LETTERS
- Volume
- 44
- Number
- 28
- Start Page
- 5299
- End Page
- 5302
- ISSN
- 0040-4039
- Abstract
- The synthesis and calcium-selective chromogenic ion binding properties of benzothiazolium derivative of calix[4]arene are described. The merocyanine-type ionophore derived from calix[4]arene-diamide showed selective chromogenic properties toward Ca2+ ions in aqueous methanol. The compound showed significant Ca2+ ion dependent changes in UV-vis spectral properties in the presence of other physiologically important metal ions (Na+, K+, and Mg2+). The pH sensitive chromogenic behavior also suggests that the compound can be used as a sensitive pH indicator around pH 6.5. (C) 2003 Elsevier Science Ltd. All rights reserved.
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