对位叠式循环方波伏安法：Ⅰ.简单可逆电极体系

本文提出叠式循环方波伏安法和对位叠式循环方波伏安法，对简单可逆电极体系的理论作了推导和验证，经对各种电流的比较，发位叠式循环方波伏安法有较多的优点。较之其它方波伏安法灵敏。     

络合吸际体系叠式循环方波伏安法的理论研究

推导出不受前行化学反应控制的络合吸附不可逆过程叠式循环方波伏安法的电流及其卷积和导数方程，系统地研究了各电流一有关参数的关系，给出了峰电势表达式，并进行了实验验证。该理论同样适用于简单吸陵不可逆过程。     

络合吸附体系叠式循环方波伏安法的理论研究Ⅱ．不受前行化学反应控制

推导出不受前行化学反应控制的络合吸附不可逆过程叠式循环方波伏安法的电流及其卷积和导数方程，系统地研究了各电流峰形，各峰电流与有关参数的关系，给出了峰电势表达式，并进行了实验验证。该理论同样适用于简单吸附不可逆过程。     

循环伏安法研究硝基药物的β—环糊精包含络合物

本文用悬汞电极循环伏安法，研究了甲硝唑、氯霉素、对硝基苯酚和对硝基苯甲酸等药物的伏安性质，用“电流法“测定了药物与β－ＣＤ生成包络物的Ｋｆ值，并讨论其作用及稳定性。     

叠式循环阶梯脉冲伏安法：Ⅰ.简单可逆电极体系

本文提出循环阶梯脉冲伏安法和对位叠式循环阶梯脉冲伏安法，推导出简单可逆电极体系的电流方程，研究了峰电流与诸因素的关系，并进行了实验验证，发现对位叠式循环阶梯脉冲伏安法有较多的优点     

双荼电极参比电位采样快扫伏安方法

报道一种双铂盘工作电极、相应的毛细管参比电极和竖直工电化学池设计并用于快速循环伏安测量。双工作电极包括一个常规工作电极,一个辅助工作电极。后者在使用中接地,仅提供参比电位来控制工作电极的电位。参比毛细管尖端安设在接近辅助工作电极的位置上;用０．３ｍｍ直径Ｐｔ盘工作电极,在电位扫描速度高达１０ｋＶ／ｓ都可以得到类似于１００％ｉＲ补偿的伏安曲线,而不必使用ｉＲ补偿电路。本文围绕高扫速伏安法中工作电极电     

可逆,准可逆和不可逆表面反应循环伏安法的数字模拟

用数字模拟的方法研究了可逆、准可逆和不可逆表面反应的循环伏安法响应,与理论推导结果相一致,但数字模拟提供了更灵活、方便、通用性更强的研究表面反应机理的手段,本文建立了有关的数字模型,给出了不同动力学参数条件下的电流-电位关系曲线,讨论了动力学参数对电流函数的影响以及用于测定这些参数的方法。     

多菌灵在玻碳电极上的伏安行为及其应用

应用循环伏安法、微分脉冲伏安法对多菌灵在破碳电极上的电化学行为及其测定进行了研究。在ｐＨ＝９．０的２ｍｏｌ／Ｌ ＮＨ３－ＮＨ４Ｃｌ底液中，对其进行循环伏安扫描，发现于０．６１Ｖ（ｖｓ．Ａｇ／ＡｇＣｌ）产生一灵敏的氧化峰。微分脉冲伏安法殉菌灵的检测限为４×１０＾－８ｍｏｌ／Ｌ。多菌灵的浓度在５．０×１０＾－７￣１．０×１０＾－５ｍｏｌ／Ｌ间与微分脉冲伏安峰电流呈线性关系（ｒ＝０．９９４２）。对于１×     

络合吸附催化循环叠式方波伏安法

对受前行化学反应控制的络合吸附催化体系循环叠式方波伏安法进行了理论推导和实验验证，讨论了电流的特性。结果表明，对于络合吸附催化体系的测定，循环叠式方波伏安法的灵敏度比现行方波伏安法高约２５倍。     

抗菌素痢菌净的电化学分析

采用循环伏安法(CV)、差分脉冲伏安法(DPV)和方波伏安法(SWV)在玻碳电极(GCE)上对痢菌净进行了电化学研究.实验表明:在pH=6.6的B-R缓冲底液中,痢菌净在-0.85伏左右有一个明显的可逆氧化还原峰,考察了不同底液及pH值、扫描速度、富集时间和静止时间的影响.DPV法其线性范围为2.0×10-6mol/L～2.0×10-3mol/L,检出限为5.0×10-8 mol/L;SWV法其线性范围为2.0×10-6 mol/L～1.0×10-3 mol/L,检出限为2.0×10-8 mol/L.并对痢菌净的电极反应机理进行了初步探讨,该方法操作简单、灵敏,可用于实际药品测定.     

Fluorescent cyclodextrins as chemosensors for the detection of cyclic and acyclic alcohols

Molecular sensing abilities and selectivities of a “turn-on” chemosensor, NBDamine-appended α-cyclodextrin (NC0αCD), were studied for cyclic alcohols and acyclic alcohols. This chemosensor is more sensitive to cyclic alcohols than acyclic alcohols, although its binding affinity is stronger for acyclic alcohols than cyclic alcohols.     

Cyclo-depolymerization of poly(propylene terephthalate): some ring-opening polymerizations of the cyclic oligomers produced

We report the cyclo-depolymerization of poly(propylene terephthalate) to give a mixture of cyclic oligomers in 94% yield, the characterization of the mixture by ¹H-NMR spectroscopy, matrix assisted laser desorption ionization time of flight mass spectrometry and gel permeation chromatography. The major cyclic oligomer in the mixture was shown to be the cyclic dimer. It was isolated and its X-ray crystal structure determined. Some entropically-driven ring-opening polymerizations of the cyclic oligomers were carried out. So too were some copolymerizations using mixtures of the cyclic oligomers and those derived similarly from poly(ethylene terephthalate) and poly(butylene terephthalate). ¹³C-NMR spectroscopic analysis showed that the copolymers were random. Copyright © 2003 John Wiley & Sons, Ltd.     

高效液相色谱/电喷雾飞行时间质谱分析太子参中环肽类化合物

采用高效液相色谱/电喷雾飞行时间质谱联用方法(HPLC/ESI-TOFMS)分析太子参中的环肽类化合物。实验采用反相C18色谱柱,二元线性梯度洗脱,分离并检测了太子参中6种环肽类化合物;通过与电喷雾飞行时间质谱联用获得了这几种化合物的准确分子量信息,由于ESI-TOFMS具有高分辨率,能够测定化合物精确的分子质量而不降低灵敏度,对6种环肽类化合物成分进行了定性鉴定。该方法简便、快速、准确。     

环状碳酸酯低聚物的合成及其开环聚合的研究

环状碳酸酯低聚物的合成及其开环聚合的研究陈雨萍魏玮李革（中国科学院化学研究所工程塑料国家重点实验室北京１０００８０）关键词环状碳酸酯低聚物，聚碳酸酯，开环聚合环状单体的开环聚合在合成高聚物方面具有突出的优点，即在聚合过程中没有副产物、热效应低、聚合...     

Cyclic PNA-based compound directed against HIV-1 TAR RNA: modelling, liquid-phase synthesis and TAR binding

A cyclic molecule including a hexameric PNA sequence has been designed and synthesized in order to target the TAR RNA loop of HIV-1 through the formation of a "kissing complex". For comparison, its linear analogue has also been investigated. The synthesis of the cyclic and linear PNA has been accomplished following a liquid-phase strategy using mixed PNA and fully N-protected (aminoethylglycinamide) fragments. The interactions of this cyclic PNA and its linear analogue with TAR RNA have been studied and the results indicate clearly that no interaction occurs between the cyclic antisense PNA and TAR RNA, whereas a tenuous interaction has been detected with its linear PNA analogue.     

甲基取代的手性环酯化合物的螺旋结构与旋光性分析

利用螺旋片段判定规则,结合X射线衍射结构图及模型结构,对4个大环酯类化合物及甲基取代产物的螺旋结构与旋光性进行了定量分析,检测结果证明了理论分析的正确性;对旋光值变化规律给予了合理解释.     

Pendant cyclic carbonate‐polymer/Na‐smectite nanocomposites via in situ intercalative polymerization and solution intercalation

Nanocomposites of sodium smectite with polyether‐ and polystyrene‐containing pendant cyclic carbonates offer a novel approach to improving hydraulic barrier properties of Na‐smectite liners to saline leachates. The cyclic carbonate polyethers were prepared by cationic ring opening polymerization of a cyclic carbonate‐containing epoxide, whilst polystyrene polymers having pendant cyclic carbonate groups were obtained from radical photopolymerization of styrene. Na‐smectite nanocomposites of these polymers were formed via clay in situ polymerization and solution intercalation methods. X‐ray diffraction (XRD) and FT‐IR analysis confirmed that the polyether can be intercalated within the layers of smectite via in situ as well as solution intercalation of the pre‐formed polymer. The cyclic carbonate polyether nanocomposite was more resistant to leaching in 3M aqueous sodium chloride than its respective cyclic carbonate. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2016 , 54, 2421–2429     

Cyclic Polymer Grafts That Lubricate and Protect Damaged Cartilage

Tissue‐reactive graft copolymers were designed to protect the cartilage against enzymatic degradation and restore its lubrication properties during the early stages of osteoarthritis (OA). The copolymers feature a poly(glutamic acid) (PGA) backbone bearing hydroxybenzaldehyde (HBA) functions and cyclic poly(2‐methyl‐2‐oxazoline) (PMOXA) side chains. PGA‐PMOXA‐HBA species chemisorb on the degraded tissue via Schiff bases and expose the biopassive and lubricious PMOXA cyclic grafts at the interface. The smaller hydrodynamic radius by cyclic PMOXA side chains coupled to the intrinsic absence of chain ends generate denser and more lubricious films on cartilage when compared to those produced by copolymers bearing linear PMOXA. Topology effects demonstrate how the introduction of cyclic polymers within tissue‐reactive copolymers substantially improve their tribological and biopassive properties, suggesting a plethora of possible applications for cyclic macromolecules in biomaterials formulations.     

由高效双键易位闭环反应合成环状聚ε-己内酯

研究了合成环状大分子的一种新方法,即借助活性开环聚合反应和高效双键易位闭环反应(RCMR)合成环状聚ε-己内酯.首先,ε-己内酯在环状引发剂2,2-二丁基-2-锡-1,3-二氧环庚烷(DSDOP)的作用下,进行活性开环聚合反应,获得双羟基封端的聚ε-己内酯(PCLOH);然后,在对甲苯磺酸、1,3-二环己基碳二亚胺(DCC)和4-二甲氨基吡啶(DMAP)的作用下,将PCLOH与3-丁烯酸反应转化为双烯丙基封端的聚ε-己内酯(allylPCL);在Grubbs催化剂(Cl2(Cy3)2Ru CHPh)的作用下,将allylPCL经RCMR环化成环状聚ε-己内酯,并采用SEC,NMR,TGA以及DSC等技术对聚合物的结构和热力学性能进行了表征,SEC和黏度表征结果显示环状聚ε-己内酯具有较小的动态力学体积,TGA和DSC表征结果显示环状聚ε-己内酯的热分解温度较其线型前体高13℃,环化的结果使其熔点和结晶度下降.结果表明allylPCL在较稀(2.5×10-5mol/L)体系中,借助Grubbs催化剂进行的RCMR分子内环化反应效率高,环化产物无需进一步分离提纯.