Synthesis, Characterization And Fluorescence Property Of Complexes With Binaphthylhydrazone Ligands

This work proposed new ideas in the supermolecules,as well as controlled design strategies of functional coordination compounds through investigations of the crystal structures and properties of supramolecular complexes with series of Binaphthylhydrazone ligands.The thesis is included three parts.1.The background of this work is concisely introduced with the emphasis on the currentsurvey of constructing novel supramolecular of BINOL and recognized of hydrazone.Binaphthylhydrazone was selected as the main ligands,which is based on the follow two points:(1)these ligands are easily prepared and modified;(2)the structures of complexes with Binaphthylhydrazone ligands are susceptible and changefully.2.The successfully design and synthesis of series complexes with Binaphthylhydrazone ligands are described.The compositions and structures of the complexes were determined by elemental analysis,molar conductance,IR,¹H NMR, et al.The crystal structure of the complex[Ag·L¹]·CF₃SO₃·2CHCl₃·H₂O were analyzed.3.The other two Binaphthylhydrazone ligands have been synthesized for the selective fluorescent recognition of Ca²⁺or Pb²⁺.By introducing different terminal groups to the receptor unit,the fluorescence signals of the receptors are significantly changed:L⁴ is fluorescence enhancement for Ca²⁺,L⁵ is fluorescence quenching for pb²⁺.The binding properties for metal ions were examined by the absorption and fluorescence spectra.The fluorescence intensity enhancement was ascribed to the complex formation bewteen Ca²⁺and L⁴ which blocked the photo-induced electron transfer process.