摘要
Two new hipyridine ligands with intramolecular charge transfer system. (ICT) transition as the lowest excited state were designed and synthesized. Upon addition of metal ions, particularly Zr2+, the absorption and emission spectra experience great changes. The binding constants towards Zn2+ are 1.27 x 10(5) L/mol and 1.66 x 10(5) L/mol for ligands 1 and 2, respectively. The strong binding affinity and high selectivity make them attractive for application as fluorescence sensors for Zn2+.
Two new hipyridine ligands with intramolecular charge transfer system. (ICT) transition as the lowest excited state were designed and synthesized. Upon addition of metal ions, particularly Zr2+, the absorption and emission spectra experience great changes. The binding constants towards Zn2+ are 1.27 x 10(5) L/mol and 1.66 x 10(5) L/mol for ligands 1 and 2, respectively. The strong binding affinity and high selectivity make them attractive for application as fluorescence sensors for Zn2+.
基金
ProjectsupportedbytheNationalNaturalScienceFoundationofChinaandMinistryofScienceandTechnologyofChina (Nos .2 99710 3 1,2 0 0 73 5 0 5andG2 0 0 0 0 2 82 0 4)
