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多硫 1,2-二硫醇烯配合物如 [M(dmit)2]n-、 [M(dddt)2]n-、 [M(pddt)2]n-等作为分子导体已有广泛的研究 [1,2]。多硫 1, 2-二硫醇烯 [M(NN)(SS)]型混配配合物,既含有可作为电子给体的 1,2-二硫醇烯配体,又含有可作为电子受体的二亚胺( diimine)配体,由于分子内的配体到配体的电荷转移( LLCT)作用,使得电中性的平面型分子中,两种配体处于极化状态,其新奇的分子结构,以及由此而来的光电磁等性质,也格外引人关注 [3]。文献报道这类配合物在适当的激发波长作用下可被光氧化并发出强光 [4]。另一方面,由于配体与配体间的… 相似文献
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This paper reports the preparation of antimony doped tin oxide crystalline powders by chemical coprecipitation method. The influence of sintering temperature and the sintering retention time on the thermal infrared emissivity is analysed. The thermal infrared reflectivity is measured and the optimum doping concentration is proposed. 相似文献
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合成了 [Ni( dmit) ( dmise) ]n-( n=2 ,1 ,0 )型混合配体配合物 ,用电结晶法制得 [BEDT-TTF]-[Ni( dmit) ( dmise) ]电荷转移盐 ,并用 EA、IR、ESR对目标产物进行了表征 .2 5℃测得化合物 [Ni( dmit) -( dmise) ]和 [BEDT-TTF][Ni( dmit) ( dmise) ]的电导率分别为 0 .2 9和 5.6× 1 0 -3 Ω-1· cm-1.2 98~ 1 0 3 K温度范围内变温电导曲线显示 :化合物 [Ni( dmit) ( dmise) ]具有典型的半导体性质 . 相似文献
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Four new complexes of the general formula [Ni(SS)(NN)], Where SSis dddt (5,6-dihydro-1,4-dithiin-2,3-dithiolate) or pddt(6,7-dihydro-5H-1,4-dithiepin-2,3-dithiolate) and NNis bpy or phen were prepared. The UV/Vis.Spectra exhibit intense intramolecular ligand-to-ligand charge transfer bands ca.600 nm.Cyclic voltammetry shows a reversible oxidation step assigned to [Ni(SS)(NN)]0=[Ni(SS)(NN)]+. When the complex [Ni(dddt)(bpy)] was partially oxidized by I2, a broad ESRsignal at g=2.003 appeared. 相似文献
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Research on factors influencing on the microwave permeability of nanocrystalline FeB alloys 下载免费PDF全文
Nanocrystalline FeB alloys have been prepared with optimized grain
size and internal stress. Samples prepared under different annealing
conditions are analysed by x-ray diffraction, and the permeability
$\mu(\omega)$ is measured by HP8510B Vector Network Analyser in the
frequency range 2--18GHz. The results show that annealing leads to
the growth of the grain size and reduces the internal stress, and
smaller grain size and larger internal stress favours the magnetic
dissipation. 相似文献
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This paper reports that two kinds of polymers with high infrared
transparency and good mechanical and physical properties have been
prepared. An internal standard method is used to evaluate the infrared
transparency of the binders. The physical and mechanical properties of the
binders are measured according to corresponding standards. The
results show the absorbance of polymer A in 8--14~μ m range is
26% that of the ethylene-vinyl acetate copolymer (EVA), and polymer B
is 9% that of the EVA correspondingly. The film of polymer A shows
good flexibility of above 1~mm, a hardness of grade 1, and adhesion of
grade 2. The film of polymer B shows good flexibility of above 1~mm,
a hardness of grade 1, and adhesion of grade 1. 相似文献
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