| Metal-dithiene complex is a kind of near-infrared dye which has very important application in the laser protection,electron photography,optical recording and so on.The domestic and international state of development of near infrared dyes is introduced in this dissertation.The species of near-infrared absorbents,the synthetic methods and research on vision of metal-dithiene complex have been also simply introduced.Two kinds of metal-dithiene complex were successfully synthesized in this dissertation.Their structure were characterized by the Infrared Spectra,1H-NMR and 13C-NMR techniques.And absorption spectra of the synthesized metal-dithiene complex were tested by the Ultraviolet-Visible-Near Infrared Spectrum device.The results revealed that the two compounds show strong absorbency at the waveband of 1000-1100nm.The thermogravimetric measurement indicated two kinds of metal-dithiene complex have good thermal stability. Obviously,two kinds of metal-dithiene complex have a huge application potential.
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