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Ernst etal[1 ] reported the synthesis and crystal structure of( 2 ,4 -C7H1 1 ) 3Nd in1 982and then,the crystal structure of( 2 ,4 -C7H1 1 ) 3Gd[2 ] was also determined.In the rareearth triscyclopentadienyl compounds,the Dy complex s structure is not in agreementwith the lanthanide contraction regularity,called“gadolinium break phenomenon”[3] .Inorder to study the reality of this phenomenon,we have determined the crystal structuresof( 2 ,4 -C7H1 1 ) 3Dy( 1 ) and( 2 ,4 -C7H1 1 ) 3Er( 2 ) … 相似文献
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Photo-luminescence and electro-luminescence from step-graded index SiGe/Si quantum well grown by molecular beam epitaxy is reported. The SiGe/Si step-graded index quantum well structure is beneficial to the enhancing of electro-luminescence. The optical and electrical properties of this structure are discussed. 相似文献
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双核磺化酞菁钴在混合溶液中聚集现象的光谱和电化学研究 总被引:3,自引:0,他引:3
用光谱法研究了双核磺化酞菁钴(bi-CoPc)在水溶液中的聚集现象,讨论了各种有机溶剂与水按不同体积比形成的混合溶液对其解聚的作用,以及pH值对bi-CoPc聚集的影响。用透射电子显微镜观察了bi-CoPc在水溶液及30%丙醇-水混合溶液中的形貌。研究了bi-CoPc在混合溶液中的电化学行为。 相似文献
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In this paper the effects of irradiation on the structures and properties of polysul-fone-polysiloxane multiblock copolymers and its important applied prospects are studied in detail. 相似文献