二甲基苯胺等离子体聚合及聚合物结构与性能的研究

应用外部电容耦合式等离子体聚合装置，研究了二甲基苯胺等离子体聚合规律，找到了最佳的聚合条件。通过热失重，红外光谱、Ｘ－射线衍射、电子衍射和接触角测定等，研究聚合物结构与性能。电导率测定表明二甲基苯胺等离子体聚合物具有半导体性质。     

苯胺等离子体聚合及其聚合物结构与性能

应用外部电容耦合式等离子体聚合装置，研究了苯胺等离子体聚合规律，找到了最佳的聚合条件。通过红外光谱、Ｘ射线衍射、电子衍射和接触角测定等研究了聚合物结构与性能。电导率测定表明苯胺等离子体聚合物具有半导体性质。     

苯胺等离子体聚合物及其聚合物结构与性能

应用外部电容耦合式等离子体聚合装置，研究了苯胺等离子体聚合规律，找到了最佳的聚合条件。通过红外光谱、X射线衍射、电子衍射和接触角测定等研究了聚合物结构与性能。电导率测定表明苯胺等离子体聚合物具有半导体性质。     

吡咯等离子体聚合产物分析

用色谱－质谱、裂解色谱－质谱、电子自旋共振、红外光谱及元素分析等方法鉴定了吡咯等离子体聚合过程中气相冷凝物和聚合物的组成，根据分析结果提出了吡咯等离子体聚合的自由基反应历程。     

间接等离子体聚合制备聚吡咯薄膜

通过吡咯在氩辉光放电气流下游区域的间接等离子体聚合作用制备了聚吡咯薄膜。研究了聚合膜的沉积速率，用ＦＴＩＲ、ＸＰＳ、ＳＥＭ、ＸＲＤ、ＴＥＤ等手段表征了聚合膜的结构和形态。结果表明，聚合膜完整地保留了吡咯单体的共轭结构，显示出较高的导电性，化学掺杂碘以后膜的室温电导率为１０－７～１０－６Ｓ／ｃｍ。     

α-蒎烯等离子体聚合及其聚合物结构研究

本文应用外部电容耦合式聚合装置,研究了α—蒎烯等离子体聚合规律。通过元素分析,裂解色谱-质谱、红外光谱和接触角测定等方法测定了聚合物的结构和性能。     

一种新的转铁蛋白压电负免传感器的研究

报道了一种基于等离子体聚合膜、结合聚电解设计的转铁蛋白压电免疫传感器，采用辉光放电等离子体聚合技术，在石英晶体上沉积一层正丁胺聚合膜，再在膜上自组装一层易再生的，带负电压的聚电解抽，调节抗体溶液的P 带正电，经静电吸附包被抗体后用以测定抗原，探讨了自组装聚电解质的浓度和自组装时间，抗体的包被浓度，包被时间和PH值以及免疫反应的酸度，温度及响应频率与时间的关系等实验条件的影响，考察了传感器的灵敏度、选择性、重现性和再生性能，用传感器测定人血清中转铁蛋白的线性范围为0．10－12．65μg/mL。将其用于实际样品中转铁蛋白的测定，结果与酶联免疫法基本一致。     

丙醛的等离子体聚合以及聚合物的结构与性质初探

应用外部电容耦合式等离子体聚合方法,制得了丙醛聚合物,研究了不同的等离子体条件对丙醛的聚合行为的影响。通过元素分析、红外光谱分析、色谱-质谱联合分析、X-射线衍射、润湿性测定等手段研完发现,聚合物为无定形交联结构,表面能为41—45达因/厘米。     

GC—MS方法测定等离子体引发丙烯酸酯聚合引发活性种

在等离子体引发的液态丙烯酸酯类单体聚合体系中加入大量链转移剂乙硫醇,得到了端基带有引发活性种的低聚物,利用气相色谱-质谱的多离子检测手段,测定了活性种的结构,结果表明:引发活性种是单体在等离子体区裂解生成的酯基碎片[-C—O—R].进而解释了丙烯酸酯类单体可以由等离子体引发聚合,而苯乙烯不能引发聚合的问题.     

等离子体引发聚合的机理初探

等离子体引发聚合与常规自由基聚合存在许多不同之处。本文从等离子体引发聚合物一些现象,如较强的溶剂效应、极高的单体选择性、主成超高分子量聚合物等方面,系统介绍了等离子体引发聚合的机理研究成果,并提出了自己的看法。     

Structural Design and Property Characterization of Bi-functional Photorefractive Polymer

lntroductionThedrivingforcet0pursueresearchonph0t0refractivep0Iymersc0mesfr0mb0thfundamentaIinterestsandpracticalexpectati0ns.Ithasbeenkn0wnthatph0t0refractivematerialsaremultifuncti0nalmateriaIswhichcombinetheelectr0-0ptic(EO)effectandphotoconductivitytomanifestanewpropertyfphotorefractivity'.Sincel990,photorefractivestudieshavebeenextendedintoorganicmaterialsfbothd0pedorganiccrystalsandpolymericmaterials=-'.Organicphotorefractivematerialsexhibitreasonablylargeelectr0-opticresp0nseandalower…     

Green-Light Electroluminescence of Conjugated Copolymer Containing p-Phenylene-ethynylene and Oxadiazole

IntroductionSince the first report,in 1 990 ,of the electro-luminescence of the conjugated polymers in the filmof poly(p- phenylenevinylene) (PPV) sandwichedbetween an anode and a cathode of appropriatework functions[1] ,enormous efforts have been de-voted to the synthesis of light emitting poly-mers[2— 4 ] .Having been found potential applicationof conjugated polymers in photoluminescence(PL)and electro- luminescence (EL ) ,their importantproperties,polymer processability,band gap tun-abil…     

镉配位聚合物的合成及其染料吸附性能研究综合实验*

介绍了一个研究型综合实验,涉及镉配位聚合物的合成及其染料吸附性能研究。该实验使用常见有机配体丁二酸、1,4-二(1-咪唑)苯与硝酸镉四水合物,在溶剂热条件下进行反应得到一例镉配位聚合物。利用X射线单晶衍射、X射线粉末衍射、热重分析、红外光谱对配位聚合物进行结构表征,并对其染料吸附性能进行研究。该实验将科学研究热点融入基础实验教学,既巩固了学生的基础理论知识,提高了实验技能,又拓展了学生的科学视野,加强了他们独立分析问题、解决问题的能力,有利于培养学生的创新精神和实践能力。     

Synthesis and Characterization of Poly (Ether Sulfone Ketone) Containing the Phthalazinone Moiety

IntroductionHeterocyclicpolymersareaclassofpolymersthatusuallyshowexcellentthermalstabilityandhavereceivedconsiderableattentionashigh-modulusplastics.Theycanbesynthesizedbythereactionofheterocyclichandesoractivatedarylhandeswithahis(phenolate)anioninanucleophilicdisplacementreaction.Manydifferenttypesofhightemperatureheterocyclicpolymers,suchaspoly(etherimide)s,poly(aryletherbenzoxazole)s,poly(etherketone)shavebeensynthesizedbythismethodl-3.Inthispaper,anovelpoly(ethersulfoneketone)withC-Nbon…     

Synthesis and characterization of poly(styrene‐maleic anhydride)‐montmorillonite nanocomposite

Poly(styrene‐maleic anhydride)‐montmorillonite nanocomposites were prepared by intercalation of layered montmorillonite with the polymer ions. Synthetic approaches including polymerization and phosphonium salt formation have been used for polymer intercalation and dispersion of the host layers in the polymer matrix. The ratio of the mineral in the composites ranged 30–50%. Wide‐angle X‐ray diffraction (WAXD) disclosed that the d₍₀₀₁₎ spacing between the internal lamellar surface were only expanding to about 13 and 15 Å according to the type of phosphonium salt suggesting packing of polymer molecules between the layers. Examination of these materials by scanning and transmission electron microscopy showed spherical nano size particles of average diameter, 350 nm. Copyright © 2002 John Wiley & Sons, Ltd.     

On the Bulk Properties of a Poly(Bicycloacrylate) Carrying Semifluorinated Side Groups

We prepared a novel fluorinated polymer from a bicycloacrylate monomer, (1H,1H,2H,2H)-perfluorododecyl 2-(bicyclo[3.1.0]hex-1-yl)acrylate, by radical ring opening polymerization. The bulk properties of the polymer were investigated by thermal analysis and X-ray diffraction, which proved the existence of a smectic mesophase up to the isotropization temperature of 74 °C. Furthermore, a solid state NMR study was started to characterize domains with different mobility mainly by ¹³C cross-polarization magic angle spinning and T₂ selective experiments. We found that the polymer is a homogeneous sample with the presence of dynamic motions in the kHz regime below the glass transition temperature.     

Synthesis and structure of the first propeller-shaped helical coordination polymer { [ Ag( S , S) -bis( oxazoline) ] (OTf)}_∞

A mixture of (S,S)-bis(oxazoline) ligand (1) with silver tri-fluoromethane sulfonate afforded a helical coordination polymer (2). Its structure was determined by X-ray single-crystal diffraction.     

抗菌药物柳氮磺胺镉配聚物的合成和晶体结构

0 Introduction Crystal engineering of pharmaceutical solids rep- resents a fertile and emerging research filed[1]. The im- petus for discovery of diverse crystal forms of drugs stems from the critical need to balance stability, bioavailability and other performance characteristics as well as provides valuable intellectual property pro- tection. Sulfasalazine (synonyms salazopyridine and salazosulfapyridine, abbreviated as H-SSZ) is a conju- gate of 5-aminosalicylic acid and sulfapyridine pos…     

Synthesis, characterization, properties and crystal structure of heterometallic 1D coordination polymers{[CuLZn· CuLZn(H2O)]·H2O}n

Copper-zinc heterometallic 1D chain coordination polymer has been synthesized and characterized by elemental analysis, and IR spectra etc. The crystal structure was determined by single-crystal X-ray diffraction analyses. The title complex is 1 D chain coordination polymer with the chemical formula {[CuLZn·CuLZn(H2O)]·H2O}n, where H4L=N-(2-hydroxybenzamido)-N'-(3-carboxy-Isalicylidene)ethylenediamine. Its structural unit is comprosed of two tetranuclear cycles formed by two dissymmetrical tetranuclear units. These units polymerized each other to form 1D chain coordination polymer.