Cation-sensing composite structure and compounds for use therein

Chemistry: analytical and immunological testing – Metal or metal containing – Li – na – k – rb – cs – fr – be – mg – ca – sr – ba – ra

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422 58, 422 681, 422 8205, 422 8206, 422 8207, 422 8208, 422 8209, 436 73, 436 74, 436 79, 436163, 436166, 436172, 540468, 540469, 558 44, G01N 3320

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active

059587822

ABSTRACT:
A fluorescent ionophoric compound is disclosed that includes a complexing moiety, such as a cryptand or crown-ether portion, and a fluorescing moiety such as a coumarin portion. The coumarin portion may be substituted at the 3-position with an electron withdrawing or polarizable group such as a substituted aromatic group or a substituted heterocyclic group having a heteroatom in at least one of its alpha positions. The compound, which exhibits good photostability, can be incorporated into cation-sensing composite structures by means of convenient points of covalent attachment.

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