The electroless copper deposition on both pure and Cr-coated diamond particles was stud- ied to produce copper/diamond composites for electronic packaging materials. The particles were characterized and the mechanism ...The electroless copper deposition on both pure and Cr-coated diamond particles was stud- ied to produce copper/diamond composites for electronic packaging materials. The particles were characterized and the mechanism of product formation was investigated through scanning electron microscopy （SEM）, energy dispersive spectroscopy （EDS）, X-ray diffraction （XRD）, and X-ray photoelectron spectra （XPS）. The particle coating thickness was measured using optical micro- graphs. The diamond particles got uniform coating thickness of copper crystals layers. This method provided an excellent base for the fabrication of metal-based composites using cheap equipments, and was less time consuming, nature friendly and economical compared with other methods of dia- mond surface metallization.展开更多
The synthesis and characterization of the copper(II) complex [Cu_2(OOCCH=C(CH_3)Fc)_3(phen)_2]ClO_4·2H_2O (1) are reported. The structure of the complex was determined by single-crystal X-ray analysis. The comp...The synthesis and characterization of the copper(II) complex [Cu_2(OOCCH=C(CH_3)Fc)_3(phen)_2]ClO_4·2H_2O (1) are reported. The structure of the complex was determined by single-crystal X-ray analysis. The compound crystallizes in the monoclinic system,space group Pc ,with Z =2,a =1.2799(4) nm,b =0.9969(4) nm,c =2.5228 nm,and β =91.576(1)°. The cationic part of 1 indicates a penametallic core in which three 3-ferrocenyl-2-crotonic acid salt (FCA) groups act as (O,O') bridging ligands between two copper(II) ions with a square-pyramidal environment. Cyclic voltammetric experiments in acetonitrile have been performed mainly to examine the Fe(II) → Fe(III) one-electron oxidation in FCA and its complex. The variable-temperature magnetic susceptibility measurements revealed very weak intramolecular anti-ferromagnetic coupling. Fitting parameters are 2 J =-0.2 cm -1 ,g =2.114,and θ =0 K.展开更多
文摘The electroless copper deposition on both pure and Cr-coated diamond particles was stud- ied to produce copper/diamond composites for electronic packaging materials. The particles were characterized and the mechanism of product formation was investigated through scanning electron microscopy （SEM）, energy dispersive spectroscopy （EDS）, X-ray diffraction （XRD）, and X-ray photoelectron spectra （XPS）. The particle coating thickness was measured using optical micro- graphs. The diamond particles got uniform coating thickness of copper crystals layers. This method provided an excellent base for the fabrication of metal-based composites using cheap equipments, and was less time consuming, nature friendly and economical compared with other methods of dia- mond surface metallization.
文摘The synthesis and characterization of the copper(II) complex [Cu_2(OOCCH=C(CH_3)Fc)_3(phen)_2]ClO_4·2H_2O (1) are reported. The structure of the complex was determined by single-crystal X-ray analysis. The compound crystallizes in the monoclinic system,space group Pc ,with Z =2,a =1.2799(4) nm,b =0.9969(4) nm,c =2.5228 nm,and β =91.576(1)°. The cationic part of 1 indicates a penametallic core in which three 3-ferrocenyl-2-crotonic acid salt (FCA) groups act as (O,O') bridging ligands between two copper(II) ions with a square-pyramidal environment. Cyclic voltammetric experiments in acetonitrile have been performed mainly to examine the Fe(II) → Fe(III) one-electron oxidation in FCA and its complex. The variable-temperature magnetic susceptibility measurements revealed very weak intramolecular anti-ferromagnetic coupling. Fitting parameters are 2 J =-0.2 cm -1 ,g =2.114,and θ =0 K.
