A calixpyridinium-pyranine complex as a selective anion sensing assembly via the indicator displacement strategy

Atilgan, S
Akkaya, EU
The recently reported calixpyridinium tetracation is shown to be very well-suited for anion sensing via the indicator displacement strategy. A very strong binding interaction between the positively charged receptor and the fluorescent pH indicator pyranine (8-hydroxy-1,3,6-pyrenetrisulfonate) requires an anionic guest of comparable negative charge for effective indicator displacement. Thus, selective and sensitive signalling of ATP is achieved in aqueous solutions.


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The coupling of ferrocenyl alkynes with cyclopropylcarbene-chromium complex leads to ferrocenyl-substituted 2-cyclopentenones with or without a hydroxy substituent, namely 4-cyclopentene-1,3-diones, 2-cyclobutenones, and alpha, beta-unsaturated aldehydes in varying amounts. The reaction initially produces a cyclopentadienone intermediate, then to the double bond of which, bearing a ferrocenyl group, addition of water occurs to afford hydroxy-substituted 2-cyclopentenones. In all the products, the hydroxy gr...
Citation Formats
S. Atilgan and E. Akkaya, “A calixpyridinium-pyranine complex as a selective anion sensing assembly via the indicator displacement strategy,” TETRAHEDRON LETTERS, pp. 9269–9271, 2004, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/65061.