The title complex, [Sm(sal)_4(phen)_2Na]_n (Ⅰ), where Hsal=salicylic acid, phen=1, 10-phenanthroline, was synthesized by the reaction of samarium chloride with phen and Hsal in ethanol solution and its crystal struct...The title complex, [Sm(sal)_4(phen)_2Na]_n (Ⅰ), where Hsal=salicylic acid, phen=1, 10-phenanthroline, was synthesized by the reaction of samarium chloride with phen and Hsal in ethanol solution and its crystal structure was determined by X-ray diffraction. The crystal is monoclinic, space group C2/c with cell dimensions of a=2 84989 (7) nm, b=0 93347 (2) nm, c=2.27954 (5) nm, β=132.4010 (8)°, V=4.4781 (2) nm^3, Z=4, μ (Mo Kα)=13.97 cm^(-1), D_c=1.605 g·cm^(-3). The title complex is a compound, with centre of the Sm and Na atoms which are bridged by two carboxylate ligands. The structure of the complex demonstrates one-dimensional chain bridged by carboxyl groups. The fluorescence spectrum of the complex indicates that the second ligand phen shows enhancement effect on the fluorescence of the complex.展开更多
Nanometer Al_2O_3 is one of new types of functional materials with broad application and development prospects in the future. The basic principle and ways of nanometer Al_2O_3 fabricated using sol-gel technique were i...Nanometer Al_2O_3 is one of new types of functional materials with broad application and development prospects in the future. The basic principle and ways of nanometer Al_2O_3 fabricated using sol-gel technique were introduced, and the factors affecting nanometer Al_2O_3 fabricated using sol-gel method were analyzed. The progress in research on nanometer Al_2O_3 and the application fields of nanometer Al_2O_3 were reviewed. The existing problems and the problems prospect for nanometer Al_2O_3 were pointed out.展开更多
A simple method to synthesize high-quality MCM-48 with a single crystals-like morphology has been worked out,using CTAB as a template in presence of alcohol. The alcohol used as co-solvents may participate in the form...A simple method to synthesize high-quality MCM-48 with a single crystals-like morphology has been worked out,using CTAB as a template in presence of alcohol. The alcohol used as co-solvents may participate in the formation of the interface between the hydrophobic and the hydrophilic domains, and hereby increase the volume of the hydrophobic core,leading to increasing the surface area of micelles, which make it easy to transfer the inorganic- organic complex form hexagonal phase to cubic phase. The samples were studied by means of XRD, SEM, and nitrogen sorption.展开更多
基金Project supported by the Science Planning Project of Zhejiang Province (2003G10006) and the Science and Research Planning Project of Zhejiang Provincial Education Department (0424XP18)
文摘The title complex, [Sm(sal)_4(phen)_2Na]_n (Ⅰ), where Hsal=salicylic acid, phen=1, 10-phenanthroline, was synthesized by the reaction of samarium chloride with phen and Hsal in ethanol solution and its crystal structure was determined by X-ray diffraction. The crystal is monoclinic, space group C2/c with cell dimensions of a=2 84989 (7) nm, b=0 93347 (2) nm, c=2.27954 (5) nm, β=132.4010 (8)°, V=4.4781 (2) nm^3, Z=4, μ (Mo Kα)=13.97 cm^(-1), D_c=1.605 g·cm^(-3). The title complex is a compound, with centre of the Sm and Na atoms which are bridged by two carboxylate ligands. The structure of the complex demonstrates one-dimensional chain bridged by carboxyl groups. The fluorescence spectrum of the complex indicates that the second ligand phen shows enhancement effect on the fluorescence of the complex.
文摘Nanometer Al_2O_3 is one of new types of functional materials with broad application and development prospects in the future. The basic principle and ways of nanometer Al_2O_3 fabricated using sol-gel technique were introduced, and the factors affecting nanometer Al_2O_3 fabricated using sol-gel method were analyzed. The progress in research on nanometer Al_2O_3 and the application fields of nanometer Al_2O_3 were reviewed. The existing problems and the problems prospect for nanometer Al_2O_3 were pointed out.
文摘A simple method to synthesize high-quality MCM-48 with a single crystals-like morphology has been worked out,using CTAB as a template in presence of alcohol. The alcohol used as co-solvents may participate in the formation of the interface between the hydrophobic and the hydrophilic domains, and hereby increase the volume of the hydrophobic core,leading to increasing the surface area of micelles, which make it easy to transfer the inorganic- organic complex form hexagonal phase to cubic phase. The samples were studied by means of XRD, SEM, and nitrogen sorption.
