Study on Interaction of Several Metals and DMY by Spectrometry

Metals can easily receive ligand and act as the central ion.Dihydromyricetin(DMY) is the most active natural substance in teng cha(Ampelopis grossedentata) and being a polyligand,can be complex with metal ions.The UV,fluorescence and infrared spectra of DMY-M were studied.Compared with the spectra of DMY,the spectra of DMY-M system showed the following features:in UV and fluorescence spectra,the peak basically did not shift,but the UV and fluorescence intensity weakened.Red shift for infrared absorption peak of carbonyl occured,and there were absorption peak of M-O in 500—700cm-1.