[Mn3O(O2CC6H5)6(C3H4N2)3]·C6H5CO2·0.5H2O的 合成、晶体结构及磁性质

Mn(O2CMe)2·4H2O、咪唑、苯甲酸和N(n-Bu)4MnO4在无水乙醇溶剂中反应,制备得到锰的三核μ3-O桥联配位化合物[Mn3O(O2CC6H5)6(C3H4N2)3]·C6H5CO2·0.5H2O.该配位化合物的X射线单晶衍射表明,其属于单斜晶系,空间群P21/C,晶胞参数：a=1.52832(19)nm,b=1.9722(2)nm,c=2.1023(3)nm,β=92.597(3)°,Z=4.变温磁化率(5～280K)研究表明,该配位化合物中3个锰离子在低温下存在弱的反铁磁性耦合,交换积分J=-2.34cm^-1。     

顺酐常压催化加氢制γ-丁内酯

顺丁烯二酸酐;顺酐常压催化加氢制γ-丁内酯     

原子吸收光谱法测定莲子和莲子心中7种金属元素含量

利用火焰原子吸收光谱法测定6种不同产地的湘莲莲子和莲子心中7种金属元素含量. 莲子和莲子心样品经粉碎干燥后, 用硝酸-高氯酸混合液进行消解处理,采用火焰原子吸收光谱法测定样品中Cr、Cu、Zn、Fe、Mn、Pb、Cd的含量. 莲子和莲子心中富含微量元素Fe、Mn、Zn、Cu、Cr,有害金属元素Pb和Cd未检出. 各元素的加标回收率为98.58%~101.53%,RSD在0.78%~1.89%之间. 方法快速、简便、灵敏,结果准确可靠,为莲子和莲子心中金属元素含量测定提供了一种可靠的方法.     

季铵盐双子表面活性剂的合成及其杀菌性能研究

以N,N,N',N'-四甲基乙二胺和溴代烷烃为原料合成了系列对称型季铵盐双子表面活性剂n-2-n(n=8,10,12,14),其结构经1H NMR表征.研究了n-2-n对油田污水中常见的硫酸盐还原菌(SRB),铁细菌(FB)和腐生菌(TGB)的杀菌性能.结果表明:与传统杀菌剂1227相比,n-2-n对SRB,FB和TG...     

纳米图案化高分子凝胶的制备

A new method was proposed to prepare binary composite colloidal crystal hydrogels by interlocking the as-prepared polystyrene/sulfonated polystyrene core/shell colloidal crystal hydrogel with a second responsive gel. The shell thickness thus the core size were synchronously controlled by altering the sulfonation time and temperature. The proper monomers were radically polymerized forming the second gel within the first gel network. The composition and structure were confirmed. Nanopatterued hydrogel including porous bulk hydrogels and surface patterned hydrogels were derived by properly treating the binary composite hydrogels. Specially, some typical patterns such as arrays of “nano-bowls” ,arrays of “nano-ribbons” and “nano-mask” were achieved by changing the treatment method such as by immersion in the solvent, after solvent evaporation from the sample surface during high rate rotation. This work provides a method to prepare nanopatterued hydrogels.     

酞菁和酞菁铜的三阶非线性光学性质

用INDO/SDCI方法研究了酞菁和酞菁铜的电子结构, 紫外-可见光谱, 三阶非线性光学系数及其色散效应, 发现酞菁铜中Cu^2+对γ的贡献很小, 故酞菁与酞菁铜的γ几乎相等, 我们的计算结果对此进行了合理的解释。     

电感耦合等离子体发射光谱法测定富铼渣中的铼

建立了电感耦合等离子体发射光谱法测定富铼渣中铼含量的方法。对样品的酸密闭消解、碱熔解和测定铼的条件进行了研究。结果表明：于10%盐酸介质、227.525 nm分析线,铼测定浓度在0.20～50.00 μg/ mL线性良好;两种样品分解方法测得铼结果吻合,用于富铼渣样品中1.85%～3.66%铼含量的测定,检出限、相对标准偏差(RSD,n=22)和回收率分别为酸密闭消解法6.46×10-10 μg/mL、0.689%～1.065%和99.95%～100.06%,碱熔解法6.49×10-10 μg/mL、0.691%～1.059%和99.96%～100.31%。