碘代水杨醛合成方法的改进

以水杨醛及取代水杨醛1a-g为原料,在环境友好介质聚乙二醇400(PEG-400)中,N-碘代丁二酰亚胺(NIS)为碘化试剂于温和条件下高收率的(79-87%)合成了碘代水杨醛2a-g。其中5-甲基-3,6-二碘水杨醛(2b)为未见文献报道的新化合物,其结构经IR,NMR,MS确定。     

非有机溶剂萃取分离贵金属的研究——聚乙烯基吡咯烷酮-盐-水固-液萃取分离金、铂、钯溴络阴离子

道了聚乙烯基吡咯烷酮（ＰＶＰ）－（ＮＨ４）２ＳＯ４－水的固－液萃取体系中Ａｕ（Ⅲ）、Ｐｔ（Ⅳ）、Ｐｄ（Ⅱ）溴络阴离子的萃取行为，在ＨＢｒ介质中，可萃取贵金属Ａｕ（Ⅲ）、Ｐｔ（Ⅳ）、Ｐｄ（Ⅱ）而与贱金属Ｆｅ（Ⅲ）、Ｃｏ（Ⅱ）、Ｎｉ（Ⅱ）、Ａｌ（Ⅲ）、Ｃａ（Ⅱ）、Ｍｇ（Ⅱ）、Ｃｕ（Ⅱ）等分离，对合成样及实际样品进行了定量萃取分离测定，结果与其它方法相符，并对机理进行了初步探讨。     

2-(甲基)-6-叔丁基-4H-吡喃酮的新的合成方法及BDCM系列红光染料的合成及其在OLED中的应用

In the interest of driving down the cost of DCM-type light emitting materials, we have found a new approach to prepare 2-（t-butyl）-6-methy1-4H-pyrone, which is cost effective and more amenable to large scale production than the reported method. Furthermore, three new DCM-type dyes, N,N-bis-[p-（2-（4-dicyanomethylene-6-t-butyl-4H- pyran-2-yl）-vinyl）-phenyl]-4-t-butyl-aniline （BDCM-BA）, N,N-bis-[p-（2-（4-dicyanomethylene-6-t-butyl-4H-pyran- 2-yl）-vinyl）-phenyl]aniline （BDCM-A） and N,N-bis-[p-（2-（4-dicyanomethylene-6-t-butyl-4H-pyran-2-yl）-vinyl）- phenyl]-4-methoxyl-aniline （BDCM-MA） were synthesized in good yields using 2-（t-butyl）-6-methyl-4H-pyrone as starting material. They can be utilized in OLEDs as nondoped red emitting materials as the result of the restricted concentration quenching effect.     

戊二醛合成体系气相色谱分析

本文给出了环戊烯合成戊二醛体系的气相色谱分析方法，色谱柱为硅烷化担体载１０％ＰＥＧ－２０Ｍ固定液，氢火焰检测器，列出了标准曲线和检测条件，变异系数均〈１．５％，相对误差±２．０％以内，该定量分析快速，简便，准确。     

Recent Advances in Organic Reactions Catalyzed by Lanthanide（Ⅲ） Complexes

Lanthanide compounds have been attracting much attention in organic synthesis.Chiral Ln-substituted BINOL have been widely studied in several asymmetric organic reactions.LnCl3 and Ln(OTf)3 have been expected to serve as Lewis acide and have been applied to many important synthetic reactions in a one-pot manner,Ln(O-i-Pr)3 exhibits some basic characters,which also can be utilized in some special organic transformation.This article deals with some lanthanides(Ⅲ）complexes promoted organic reactios,which we have recently developed.     

酸直接溶解——ICP—AES测定润滑油中磨损铁

介绍了采用盐酸将润滑油中磨损铁溶入水相中，ＩＣＰ－ＡＥＳ测定铁含量的方法，试验表明，经本方法处理的试样组成简单，干扰少，ＩＣＰ条件容易选择，测定结果准确度和重复性良好。     

基于核酸适配体功能化荧光氧化石墨烯的免标记“Turn-off”型Hg2+传感器研究

利用湿化学法制备出具有一定荧光性能的氧化石墨烯(GO)负载金纳米颗粒(AuNPs)复合材料(GO@AuNPs),并将巯基化单链富T核酸适配体(aptamer)结合在该复合材料的金纳米颗粒表面,形成aptamer功能化氧化石墨烯-金纳米颗粒复合物(aptamer-GO@AuNPs)。当汞离子存在时,由于7个T-Hg~(2+)-T结构的配位作用,aptamer折叠形成刚性的发夹状双链DNA结构,并使Hg~(2+)靠近石墨烯表面(少于1 nm),使得电子可沿着双链DNA通道从石墨烯转移到汞离子,从而猝灭氧化石墨烯的荧光,由此构建了一种基于石墨烯荧光猝灭的"turn-off"型荧光传感器。考察了多种因素对检测体系的影响,在最优实验条件下,此方法对Hg~(2+)的线性检测范围为0.5～80 nmol/L,检出限为0.3 nmol/L。应用于环境水体样品中Hg~(2+)的检测,加标回收率为96.0%～105%,相对标准偏差为1.4%～3.2%。该方法操作简单,有较强的抗干扰能力,灵敏度和选择性高,不需要标记,检测快速,可用于环境水体样品中Hg~(2+)的高灵敏检测。     

Fabrication of Co/CoO Exchange Bias System by Ion Implantation and Its Magnetic Properties

We use ion implantation as a new approach to build an anti-ferromagnetic （AFM） cluster embedded exchange bias （EB） system. Co film with thickness of 130nm is deposited on the Si （111） substrate using magnetron sputtering, 60keV O＋ is chosen to implanted into the Co film to form CoO AFM clusters coupling with Co matrix at the interface. By measuring the hysteresis loop after field-cooling, significant shifts of loop along the applied field are confirmed. When increasing the implantation dose to 2×1017/cm2 and annealed samples in N2 atmosphere, we obtain the highest HEB to 458Oe.     

New Technique for Mixed Potential Integral Equation Formulation inMultilayered Media and Its Application of Electrically Small Antennas Connected with Vertical Via-Holes

We present an effective technique for mixed potential integral equation formulations in multilayered media. In terms of the dipole source method, the formulations of Green functions in spectral domain are restructured concisely, a proper integration path is chosen to straightforwardly apply the two-level discrete complex image method and the high order Sommerfeld identities yield very accurate results of Green functions in the spatial domain for general electric and magnetic sources in three-dimensional multilayered media. Finally, it is used to design a realistic low temperature co-fired ceramic aperture coupled antenna with vertical via-holes connected at the Ka band.