陈皮中微量铜的分光光度法测定

采用混合酸V(HNO3) V(HClO4)=5 1对新鲜蕉柑的陈皮和果肉样品进行湿法消化处理,并用分光光度法测定了陈皮和果肉中铜的含量。该法的回收率为96.9%~100.8%,相对标准偏差在0.28%~3.94%之间,方法简便、快速、准确。     

Synthesis and Structure of a Dinuclear Copper（Ⅱ）- ditetrazolate Involving in situ Ligand Synthesis

The hydrothermal reaction of 1,2-dicyanobenzene with NaN3 in the presence of CuCl2, 2,2′-bipyridine and H2O affords a novel dinuclear copper(II)-ditetrazolate, [Cu(bpy)- (pdtz)]2 (Hpdtz = 5,5′-1,2-phenylene-ditetrazole, bpy = 2,2′-bipyridine). The pdtz ligand is generated in situ through Sharpless 2 3 cycloaddition reaction. Its crystal structure was deter- mined by single-crystal X-ray diffraction method. The crystal crystallizes in the monoclinic system, space group P21/n with a = 8.2096(16), b = 18.580(4), c = 11.838(2) , β = 103.12(3)o, V = 1758.5(6) 3, Z = 2, Mr = 863.83, Dc = 1.631 g/cm3, F(000) = 876 and μ = 1.272 mm-1. In this novel dinuclear structure, the pdtz ligand adopts a peculiar μ2-η1,η2 coordination mode.     

Photochemical Synthesis and Spectral-Optical Characteristics of ZnO/Cu and ZnO/Ag/Cu Nanoheterostructures

The photoreduction of Cu²⁺ at the surface of ZnO nanoparticles and ZnO/Ag nanostructures was investigated. The spectral characteristics of the obtained ZnO/Cu and ZnO/Ag/Cu composites were studied in relation to the reaction conditions. It was shown that the ZnO/Ag nanoparticles have higher photocatalytic activity in the reduction of Cu²⁺ ions than the individual ZnO particles.     

含铜三元类水滑石化合物的合成及其性质

 以Cu（NO3）2，Zn（NO3）2和Al（NO3）3为原料，以NaOH为沉淀剂，利用共沉淀法合成了含铜三元类水滑石化合物CuZnAl－HTLcs．从不同Cu／Zn／Al比的混合原料溶液的滴定曲线入手，详细探讨了溶液pH值、原料加入方式、组分配比及水热处理条件对类水滑石合成的影响，利用XRD，ICP及比表面积测定对合成物进行了表征，并以苯酚羟基化为探针反应评价了催化剂的催化性能．结果表明，在体系pH＝5．0～6．2，（Cu＋Zn）／Al摩尔比＝2．0，Cu／Zn摩尔比≤1．0及室温条件下共沉淀后，于100℃水热处理3h，即可得到晶相单一和结晶度高的CuZnAl－HTLcs．变化pH法合成的样品的相对结晶度为100％，低过饱和法为76．5％，高过饱和法为75．9％．合成的CuZnAl－HTLcs中Cu2＋的含量均比原料液中Cu2＋的含量有所增加，这可能是由于在pH＝5．8时Cu2＋对Al（OH）3的同晶取代能力比Zn2＋强．随着CuZnAl－HTLcs中Cu含量的增加，催化剂对苯酚羟化反应的催化活性逐渐增大．     

反对数微分简易示波伏安法的研究

在获得微分简易地波伏安图的实验线路中,增加了反对数装置,提出了反对数微分简易示波伏安法。该方法被应用于铝合金中微量铜和分子筛中微量钴的测定,获得了满意结果。     

硫化镉纳米荧光探针荧光猝灭法测定痕量铜

制备了无机纳米溶胶CdS，研究了纳米粒子的大小和荧光性质，以该纳米粒子为探针，建立了荧光猝灭法测定铜离子的新方法。该方法已成功用于人发样品测定，方法简单，快速，选择性好，灵敏度高，在最佳实验条件下，测定铜离子的线性区间为2．0－24．0μg/L，检出限为0．23μg/L。     

铜催化下格氏试剂与α,ω-二溴代烷的偶合反应

七十年代发展了铜催化下格氏试剂与卤代物、磺酸酯、酰卤的选择性交叉偶合反应,以后对这类反应并未深入研究。我们以几种铜     

呋喃甲醛缩二乙撑三胺希夫碱铜配合物的合成及结构(英)

A novel copper(Ⅱ) complex CuL(NO₃)₂(where L=N,N′-bis(furaldehyde)-diethylenetriamine) was synthesized and characterized by X-ray crystallography analysis. The crystal belongs to monoclinic, space group C2/c with cell parameters a=1.924 0(6) nm, b=0.792 8(3) nm, c=2.504 1(8) nm, β=111.163(5)°, and Z=8. The coordination geometry around Cu(Ⅱ) is a distorted trigonal-bipyramid，and one-dimensional chain is formed through intermolecular hydrogen bonds. CCDC: 255629.     

溴化环氧/Novolacs体系在CEM-3板中的应用

分别以PN、BPFN和BPAN为溴化环氧A80的固化剂,以DMP-30、HMTA和2-MZ为促进剂制备CEM-3覆铜板,研究了这三种线型酚醛树脂作为固化剂对CEM-3覆铜板力学性能、电性能、吸水性和耐热性等的影响.结果表明,以三种线型酚醛树脂为固化剂制备的CEM-3覆铜板的力学性能相近,而吸水性由高至低的顺序为PN＞BPFN＞BPAN,介电性能由高至低的顺序为BPFN≈BPAN＞PN,Tg由高至低的顺序为PN＞BPFN＞BPAN.由BPAN和BPFN为固化剂制备的CEM-3覆铜板经150℃/2h后处理,耐变色性明显优于PN为固化剂制备的CEM-3覆铜板.     

铜(Ⅰ)配合物[Cu(C8H4O2F3S)(PPh3)2]合成、性质、晶体结构及反应机理的探讨

Reaction of copper powder with 2-thenoyltrifluoroacetone and PPh₃ yielded the complex [Cu(C₈H₄O₂F₃S)(PPh₃)₂], which have been characterized by elemental analysis and IR spectra. The crystal is monoclinic, space group P2₁/n , a=1.0584(1), b=1.6738(1), c=2.2728(9) nm; β =94.22(2); V =4.0152 nm 3; Z=4; D_c=1.299 g·cm^-3; R=0.048, R_W=0.054. Copper (Ⅰ) ion is coordinated by two O and two P atoms forming distorted tetrahedron.