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A Luminescent Receptor with Affinity for N-terminal Histidine in Peptides in Aqueous Solution

Kruppa, M. ; Mandl, C. ; Miltschitzky, S. ; König, B.


Crown ethers of suitable size are the perfect artificial host compounds for ammonium ion binding, but the rather low affinity in aqueous solution prevents their use at physiological conditions. We report here the synthesis and properties of a luminescent benzo crown ether with a pendant copper imidodiacetic acid complex, which coordinates with high affinity to histidine. The emission intensity of ...


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