title: Spectroscopic and thermal properties of short wavelength metal (II) complexes containing alpha-isoxazolylazo-beta-diketones as co-ligands.
abstract: Two new azo dyes of alpha-isoxazolylazo-beta-diketones and their Ni(II) and Cu(II) complexes with blue-violet light wavelength were synthesized using a coupling component, different diazo components and metal (II) ions (Ni2+ and Cu2+). Based on the elemental analysis, MS spectra and FT-IR spectral analyses, azo dyes were unequivocally shown to exist as hydrazoketo and azoenol forms which were respectively obtained from the solution forms and from the solid forms. The action of sodium methoxide (NaOMe) on azo dyes in solutions converts hydrazoketo form into azoenol form, so azo dyes are coordinated with metal (II) ions as co-ligands in the azoenol forms. The solubility of all the compounds in common organic solvents such as 2,2,3,3-tetrafluoro-1-propanol (TFP) or chloroform (CHCl3) and absorption properties of spin-coating thin films were measured. The difference of absorption maxima from the complexes to their ligands was discussed. In addition, the TG analysis of the complexes was also determined, and their thermal stability was evaluated. It is found that these new metal (II) complexes had potential application for high-density digital versatile disc-recordable (HD-DVD-R) system due to their good solubility in organic solvents, reasonable and controllable absorption spectra in blue-violet light region and high thermal stability.
authors.affiliation: Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, P.O. Box 800-211, Shanghai 201800, China. huangfuxin@siom.ac.cn
authors.forename: Fuxin
authors.initials: F
authors.lastname: Huang
authors.forename: Yiqun
authors.initials: Y
authors.lastname: Wu
authors.forename: Donghong
authors.initials: D
authors.lastname: Gu
authors.forename: Fuxi
authors.initials: F
authors.lastname: Gan
mesh_terms: D001391:Azo Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D007555:Isoxazoles / Q000737:chemistry*; D007659:Ketones / Q000737:chemistry*; D008024:Ligands; D015394:Molecular Structure; D009532:Nickel / Q000737:chemistry*; D012995:Solubility; D013057:Spectrum Analysis; D013696:Temperature
chemical_list: D001391:Azo Compounds; D007555:Isoxazoles; D007659:Ketones; D008024:Ligands; D003300:Copper; D009532:Nickel