A new fluorescence chemical sensor---compound 1 used for identification of nucleotide phosphate such as ATP, ADP, AMP anion in water has been synthesized. According to the variation of pyrene excimer emission of compound 1 in water with concentration of nucleotide phosphates and adenine, the quenching constants have been measured. In addition, the stability constants of the complexes between compound 1 and different nucleotide phosphate have also been determined. From the results, compound 1 shows a better selectivity for ATP than for ADP or AMP. Moreover, the molecular configuration and molecular geometrical size of compound 1 and its complexes calculated by the method of molecular mechanics were compared and studied with experimental results.

Key words: EXCIMER