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The fluorescent spectra of 2, 6-bis(benzimidazol-2-yl) pyridine (compound 2) and its N-substituted compound (1) arestudied. The fluorescent characteristics of these compounds and the complexes formed from these compounds with different metal ionshave also been investigated. The results show that compound 1 possesses a specific ability to form complex with Cu~(2+) ions, but compound2 has not such a property. It is proposed that the specific recognition ability of compound 1 to Cu~(2+) may attribute to the cyclic configura-tion of this compound in polar solvent.
The fluorescent spectra of these compounds and the complexes formed from these compounds with different metal ions have also shown that the fluorescent spectra of 2, 6-bis (benzimidazol-2-yl) pyridine (compound 2) and its N-substituted compound has investigated. The results show that compound 1 possesses a specific ability to form complex with Cu ~ (2+) ions, but compound2 has not such a property. It is proposed that the specific recognition ability of compound 1 to Cu ~ (2+ ) may attribute to the cyclic configura-tion of this compound in polar solvent.