In the present investigation, the novel copper Schiff base complex was synthesized and its catalytic activity was evaluated for the ring-opening polymerization （ROP） of lactide and block polymerization of poly（lact...In the present investigation, the novel copper Schiff base complex was synthesized and its catalytic activity was evaluated for the ring-opening polymerization （ROP） of lactide and block polymerization of poly（lactide） with po/y（ethylene glycol）methyl ether,展开更多
In this paper,one novel Schiff base(HL) derived from 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5(PMBP) and sulfanilamide and its corresponding transitional metallic copper complex have been synthesized in the nonaqueous ...In this paper,one novel Schiff base(HL) derived from 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5(PMBP) and sulfanilamide and its corresponding transitional metallic copper complex have been synthesized in the nonaqueous solvent.The formula of complex is CuL2 based on elemental analysis,complexometric titration,molar conductance value and mass spectra data.Its molecular structure is characterized by means of IR,TG and 1HNMR,etc.,and the antibacterial activities under different concentrations of these two compounds are also measured with Oxford cup method.展开更多
A novel dinuclear copper complex with tetraglycol aldehyde-phenylalanineSchiff base has been synthesized. It was characterized and formulated as [Cu_2L(NO_3)]NO_3 byelemental analysis, magnetic susceptibility, TG-DTA,...A novel dinuclear copper complex with tetraglycol aldehyde-phenylalanineSchiff base has been synthesized. It was characterized and formulated as [Cu_2L(NO_3)]NO_3 byelemental analysis, magnetic susceptibility, TG-DTA, IR, EPR and ~1H NMR spectra. The obtainedcomplex can be used as a good catalyst for the polymerization of methyl methacrylate (MMA). Theoptimum polymerization conditions are: MMA/catalyst = 500 (molar ratio); [catalyst] =7.5x10^(-3)mol·L^(-1); dioxane as solvent; 80℃; 6 h. Polymethyl methacrylate (PMMA) with 80%conversion, 7.2x10^5 viscosity-average molecular weight and 60.5% syndiotacticity was obtained. Thiscomplex has also been shown to play an important role in scavenging O_2^-.展开更多
文摘In the present investigation, the novel copper Schiff base complex was synthesized and its catalytic activity was evaluated for the ring-opening polymerization （ROP） of lactide and block polymerization of poly（lactide） with po/y（ethylene glycol）methyl ether,
文摘In this paper,one novel Schiff base(HL) derived from 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5(PMBP) and sulfanilamide and its corresponding transitional metallic copper complex have been synthesized in the nonaqueous solvent.The formula of complex is CuL2 based on elemental analysis,complexometric titration,molar conductance value and mass spectra data.Its molecular structure is characterized by means of IR,TG and 1HNMR,etc.,and the antibacterial activities under different concentrations of these two compounds are also measured with Oxford cup method.
文摘水杨醛与牛璜酸以1∶1的比例在无水乙醇中反应,生成水杨醛缩牛璜酸席夫碱,再与C u(Ⅱ)金属离子络合,合成Schiff碱铜配合物,用红外光谱证实了其结构。通过"正交试验法"研究了该配合物对双氧水漂白棉织物的催化作用。实验对漂白后的棉织物的断裂强度、白度等指标进行了测试及分析,结果表明,该配合物对双氧水漂白有较好的催化作用。当配合物的浓度为0.4 g/L,pH=9,温度为60℃,时间为60 m in,此时棉织物的白度和断裂强度较好。
基金This work was supported by the National Natural Science Foundation of China (Grant No.29671026) the Natural Science Foundation of Zhejiang Province, China (Grant No. 202033).
文摘A novel dinuclear copper complex with tetraglycol aldehyde-phenylalanineSchiff base has been synthesized. It was characterized and formulated as [Cu_2L(NO_3)]NO_3 byelemental analysis, magnetic susceptibility, TG-DTA, IR, EPR and ~1H NMR spectra. The obtainedcomplex can be used as a good catalyst for the polymerization of methyl methacrylate (MMA). Theoptimum polymerization conditions are: MMA/catalyst = 500 (molar ratio); [catalyst] =7.5x10^(-3)mol·L^(-1); dioxane as solvent; 80℃; 6 h. Polymethyl methacrylate (PMMA) with 80%conversion, 7.2x10^5 viscosity-average molecular weight and 60.5% syndiotacticity was obtained. Thiscomplex has also been shown to play an important role in scavenging O_2^-.
