The synthesis and characterization of Fe-doped CuA102 semiconductor were reported. The samples were synthesized by a simple and cost effective spin-on technique from solid state reaction of Cu20 and A1203 on sapphire ...The synthesis and characterization of Fe-doped CuA102 semiconductor were reported. The samples were synthesized by a simple and cost effective spin-on technique from solid state reaction of Cu20 and A1203 on sapphire （001） substrate. Appropriate ethyl-cellulose （EC） and terpineol are useful for the formation of Fe-doped CuA102 films. X-ray diffraction （XRD） revealed the growth of pure delafossite CuA102 phase ruled out elemental metallic Fe clusters in all the Fe incorporated CuA102 films. The existence of ferromagnetism at room temperature is evidenced by well-defined hysteresis loops. Specially, the saturation magnetization （Ms） values at room temperature have been monotonously enhanced with the increase of Fe composition from 1% to 5%.展开更多
The fluorescence quenching spectra of the holo-Cu A and apo-Cu A domain of cytochrome c oxidase from Para coccus versutus by KI were investigated.The results indicated that in solution part of the fluorophore tryptoph...The fluorescence quenching spectra of the holo-Cu A and apo-Cu A domain of cytochrome c oxidase from Para coccus versutus by KI were investigated.The results indicated that in solution part of the fluorophore tryptophanes of the Cu A domain are exposed to the surface of the protein,and others buried inside o f the hydrophobic core.The fluorescence quenching constants of holo-Cu A and apo-Cu A domain protein by KI are1.39and2.24,respectively,which suggested t hat the bi-nuclear copper center[Cu A+1.5 -Cu A+1.5 ]also plays a role on the structural stability of the protein.展开更多
利用荧光光谱和圆二色谱研究了细胞色素 c氧化酶 Cu A 结构域蛋白的稳定性。结果表明 ,随着溶液p H值的升高 ,Cu A 结构域蛋白的稳定性降低。随着温度的升高 ,Cu A结构域蛋白的二级结构遭到破坏。脱金属形式蛋白的热稳定性减小 ,表明双...利用荧光光谱和圆二色谱研究了细胞色素 c氧化酶 Cu A 结构域蛋白的稳定性。结果表明 ,随着溶液p H值的升高 ,Cu A 结构域蛋白的稳定性降低。随着温度的升高 ,Cu A结构域蛋白的二级结构遭到破坏。脱金属形式蛋白的热稳定性减小 ,表明双核金属铜中心的存在对 Cu A展开更多
基金Funded by the National Natural Science Foundation of China(No.61077074)
文摘The synthesis and characterization of Fe-doped CuA102 semiconductor were reported. The samples were synthesized by a simple and cost effective spin-on technique from solid state reaction of Cu20 and A1203 on sapphire （001） substrate. Appropriate ethyl-cellulose （EC） and terpineol are useful for the formation of Fe-doped CuA102 films. X-ray diffraction （XRD） revealed the growth of pure delafossite CuA102 phase ruled out elemental metallic Fe clusters in all the Fe incorporated CuA102 films. The existence of ferromagnetism at room temperature is evidenced by well-defined hysteresis loops. Specially, the saturation magnetization （Ms） values at room temperature have been monotonously enhanced with the increase of Fe composition from 1% to 5%.
文摘The fluorescence quenching spectra of the holo-Cu A and apo-Cu A domain of cytochrome c oxidase from Para coccus versutus by KI were investigated.The results indicated that in solution part of the fluorophore tryptophanes of the Cu A domain are exposed to the surface of the protein,and others buried inside o f the hydrophobic core.The fluorescence quenching constants of holo-Cu A and apo-Cu A domain protein by KI are1.39and2.24,respectively,which suggested t hat the bi-nuclear copper center[Cu A+1.5 -Cu A+1.5 ]also plays a role on the structural stability of the protein.
