槲皮素包裹修饰硅包银纳米颗粒作为荧光传感器对铜离子的识别作用（英文）

制备了一种基于天然产物槲皮素接枝硅包银核壳结构的纳米荧光传感器(Ag@SiO_2@Qc),对铜离子具有好的选择性和灵敏性。Ag@SiO_2@Qc与Cu~(2+)离子结合后,荧光发射强度发生猝灭,并且可通过荧光滴定光谱得到了荧光滴定曲线:y=-32.864x+587.59(R~2=0.998),其线性范围分别为:3×10~(-7)~4.8×10~(-6 )mol·L~(-1),最低检测限为1.0×10~(-7 )mol·L~(-1)。并且将Ag@SiO_2@Qc应用于环境中水样的检测结果的准确度好,精密度高,而且更加环保、方便、快捷,具有很大发展潜力与应用价值。     

无规丁苯共聚物的核磁共振波谱——13C-NMR谱带的归属

基于对不同组成的丁苯共聚物的测定、经验计算和参考文献值,对¹³C NMR谱图高场部分的21组谱带以及低场部分的11组谱带进行了归属,它们来自不同二单元结构环境中的各个碳原子。借助于超导NMR波谱,对谱带指认提出了一些新的看法。     

用拉曼光谱研究抗癌药物落羽松醇和它的类似体

用拉曼光谱研究抗癌药物落羽松醇和它的类似体郑思定，舒莲美，洪田博喜（复旦大学分析测试中心上海２００４３３）（日本岗山理科大学）ＲａｍａｎＳｐｅｃｔｒｏｓｃｏｐｉｃＩｎｖｅｓｔｉｇａｔｉｏｎｏｆｔａｘｏｌａｎｄＩｔｓＡｎａｌｏｇｕｅｓ￥ＺｈｅｎｇＳｉｄ...     

在黑龙江省珠算协会四届三次理事会议上的讲话

各位领导、各位理事、同志们: 今天,省珠协在这里召开四届三次理事会议,总结1995年工作.安排部署1996年工作,并且表彰珠算技术等级鉴定工作先进单位,这对于珠算协会的发展和促进我省珠算科学事业的蓬勃发展具有重要意义。我代表黑龙江省科协对会议的召开表示热烈祝贺！向出席会议的全体同志并通过大家向全省广大珠算科学工作者致以亲切的问候！     

巧设法向量求点面距与线面角

学习了高中数学试验修订本第二册下Ｂ第九章空间向量及其运算后 ,笔者认为以向量为工具 ,解决立体几何中求角度、距离等问题 ,减少了辅助线的添加 ,避开了一些较复杂的空间想象 ,降低了解题的难度 .且思路明确 ,易于下手 ,过程程序化 ,易于接受 .下面以例说明利用法向量求点面距及线面角 .例　已知棱长为 1的正方体ＡＣ1 ,Ｅ ,Ｆ分别是Ｂ1 Ｃ1 和Ｃ1 Ｄ1 的中点 .(1 )求证 :Ｅ、Ｆ、Ｂ、Ｄ共面 .(2 )求点Ａ1 到平面ＢＤＦＥ的距离 .(3 )求直线Ａ1 Ｄ与平面ＢＤＦＥ所成的角 .解　 (1 )略(2 )建立如图所示的空间直角坐标系Ｄ -ｘｙｚ,则Ｂ(1 …     

二维INADEQUATE谱在δ—维生素E上的应用

二维INADEQUATE谱在NMR研究中具有重要价值,本文以二维INADEQUATE谱为主,结合DEPT,同核及异核位移相关谱,指认了δ-维生素E的碳谱谱峰,并由碳氢相关谱给出了各氢的化学位移,本文对δ-维生素E碳谱某些峰和二维INADEQUATE谱做了讨论,并对文献数据做了讨论,并对文献数据做了修正.     

多分支中性受体的合成及αω-二羧酸阴离子识别研究

Two new multi-armed neutral receptors 1 and 2 containing thiourea and amide groups were synthesized by simple steps in good yields. Receptors 1 and 2 have a better selectivity and higher association constants for malonate anion than other anions examined by the present work. In particular, distinct color changes were observed upon addition of dicarboxylate anions to the solution of 1 in DMSO. The UV-Vis and fluorescence spectra data indicate that a 1 ： 2 stoichiometry complex was formed between compound 1 or 2 and dicarboxylate anions of shorter carbon chain, and a 1 ： 1 stoichiometry complex was formed between compound 1 or 2 and dicarboxylate anions of longer carbon chain through hydrogen bonding interactions.     

Study on Syntheses and Anti-bacterial Activities of Some New Transition Metal Complexes with Schiff Base Ligand Containing Pyridine and Amide Moieties

Several new transition metal complexes using Schiff base containing pyridine and amide moieties (N, N′-bis(β-salicylaliminoethyl)-2, 6-pyridinedicarboxylic amide, H4L) as the ligand have been prepared. Their compositions and structures are corroborated by elemental analysis, IR, UV, ^1H NMR, DTA-TG and molar conductivity data.Their anti-bacterial activities have been studied by microcalorimetry. The result shows that the ligand and all complexes are potential anti-bacteria reagent and their inhibitory capacities are concentration-depended. The Mn complex has the strongest inhibitory capacity.     

Selective Synthesis of [2＋2] Macrocyclic Schiff Bases from Chiral 1,4-Diamines

[2＋2] macrocyclic Schiff bases of three kinds have been synthesized from chiral 1,4-diamines by use of different methods. Macrocyclic Schiff bases 1a-1c have been selectively obtained based on a non-templated dilution method from chiral 1,4-diamines a-c and dialdehyde DA1, whereas macrocycles 2a-2c have been selectively produced from reaction of diamines a-c and dialdehyde DA2 in the presence of boric acid as templates. Macrocyclic Schiff bases 3a-3c have been afforded in high selectivity from diamines a-c and dialdehyde DA3 by means of sodium-template. All the titled compounds have been confirmed by ^1H NMR and ESI-MS analyses.