基于ZnTMPP一维线性配位聚合物的合成及其光、电性能

以四(对甲基苯基)卟啉锌(ZnTMPP)配合物为核心配体,选择联吡啶、联苯胺和新合成的Schiff碱-双(4-吡啶甲醛)缩联苯胺为桥联配体合成了3种新型π-π共轭的一维线性配位聚合物。通过FT-IR、1 H-NMR、UV-Vis-NIR和XRD衍射谱图等对配体及配位聚合物结构进行了表征。考察了桥联配体的长度及结构对配位聚合物光学性能、电性能和结晶态的影响。结果表明,以Schiff碱-双(4-吡啶甲醛)缩联苯胺为桥联配体合成的配位聚合物在300~1 100nm有宽吸收带,并且可在低电位发生氧化还原反应,其满带和空带之间的能隙为0.19eV;以联吡啶和联苯胺为桥联配体的配位聚合物结晶度较好。     

含双噻唑基聚合物的合成及电流变性能研究

采用2，2’-二氨基-4，4’-双噻唑与联苯胺合成一种含有双噻唑基的共轭聚合物，通过红外、扫描电镜、热重分析等测试了该物质的结构及热稳定性等，并通过将聚合物分别分散在硅油和溴代二苯甲烷中制备电流变体，测试其电流变性能。结果表明：含双噻唑基的共轭聚合物作为电流变体的分散相表现出了良好的电流变性能，同时发现分散相和分散介质的密度相近时有利于电流变性能的提高。     

可溶性共聚型聚苯并咪唑的合成及性能

以对苯二酚和对氟苯甲腈为原料, 合成了1,4-二(4-羧基苯氧基)苯, 并与4,4′-二羧基二苯醚作为共聚单体与3,3′-二氨基联苯胺反应合成了共聚型聚苯并咪唑, 通过红外光谱、核磁共振和热重分析等手段对聚合物的结构及热性能进行了分析. 研究了聚合物的黏度、溶解性、成膜性及聚合物薄膜的力学性能.     

联苯胺分子印迹聚合物零流电位法传感器的制备及其应用

考察了在石墨烯修饰的铅笔芯电极( G-PEC)表面制备联苯胺分子印迹聚合物( BZ-MIP)的电聚合参数以及模板分子从印迹聚合物中去除的洗脱时间对BZ-MIP与BZ结合前后零流电位响应差值的影响,优化了最佳制备条件;计算出联苯胺及与其结构相近的4-氨基偶氮苯、4-氯苯胺、4-氨基联苯和单偶氮染料胭脂红在BZ-MIP上的印迹容量分别为0.632,0.1123,0.1123,0.0847和0.0725。实验结果表明,本方法制备的BZ-MIP对联苯胺特异识别性和选择性良好,其它物质不干扰模板分子与印迹聚合物印迹位点的结合。在联苯胺4伊10-8~1伊10-5 mol/L浓度范围内,BZ-MIP与BZ结合前后的零流电位差与其浓度对数呈正比,检出限为1.89伊10-8 mol/L,基于此制备出检测联苯胺的BZ-MIP-G-PEC零流电位传感器。应用此传感器检测实际样品,回收率为95.7%~104.2%。     

新型磺化聚苯并咪唑的合成及性能

以对苯二酚及对氟苯甲腈为原料, 合成了1,4-二(4-羧基苯氧基)苯, 再经磺化反应合成了1,4-二(4-羧基苯氧基)苯-2-磺酸钠(BCPOBS-Na), 并以4,4'-二羧基二苯醚(DCDPE)作为非磺化二酸单体与3,3'-二氨基联苯胺反应合成了一系列磺化聚苯并咪唑(SPBI). 通过红外光谱、 核磁共振及热重分析等手段对聚合物的结构及性能进行了分析. 研究了聚合物的特性黏度、 溶解性、 成膜性及聚合物薄膜的力学性能.     

一维〔M（tmp）〕_2ReO_4（M＝Ni、Cu、Pd）聚合物的能带结构

用紧束缚ＥＨＴ晶体轨道方法对一维〔Ｍ（ｔｍｐ）〕_２ＲｅＯ_４（Ｍ＝Ｎｉ、Ｃｕ、Ｐｄ）聚合物进行了能带计算，利用键向量近似方法对能带的结构及组成进行了讨论。结果表明，该类型聚合物具有不同的导电机理，并进一步研究了环平面间的成键性质及转角改变对聚合物导电性能的影响。     

一维[M（tmp）]2ReO4（M=Ni,Cu,Pd）聚合物的能带结构

用紧束缚ＥＨＴ晶体轨道方法对一维［Ｍ（ｔｍｐ）２］２ＲｅＯ４（＝Ｎｉ，Ｃｕ，Ｐｄ）聚合物进行了能带计算，利用键向量近似方法对能带的结构及组成进行了讨论。结果表明，该类型了事物具有不同的导电机理，并进一步研究了环平面间的成键性质及转角改变对聚合物导电性能的影响。     

共轭高分子的精准合成

共轭高分子由于带隙容易调控、柔性、可溶液加工等优异性能，在有机光电领域具有重要的应用前景.然而，聚合物普遍存在批次重现性差、结构缺陷多等问题，限制了聚合物的应用及发展.本文总结了聚合物的结构缺陷，通过回顾本课题组以及国内外同行近几年的前沿工作，详细分析了共轭高分子材料均聚结构缺陷产生的原因和机理，同时介绍了目前较为常用的表征结构缺陷的方法，以及此类缺陷对器件性能的影响.另外，还分析了当前3种合成共轭高分子材料的经典方法：Stille、Suzuki和直接芳基化聚合反应，介绍了这些方法在聚合物精准合成方面的前瞻性方法学的最新成果，并对本领域的发展进行了展望.     

联苯胺与二苯胺共聚物的界面聚合及其表征

采用界面聚合法合成了聚联苯胺、聚二苯胺以及联苯二胺与二苯胺的共聚物。利用红外光谱(FT-IR)、紫外可见吸收光谱(UV-vis)、电子扫描显微镜(SEM)、X射线衍射(XRD)、循环伏安等手段初步探讨了单体配比对共聚物形貌、结构及性能的影响。结果表明:界面聚合法合成的聚联苯胺呈现微米级棒状分布,随着共聚物中二苯胺结构单元的增加,棒状结构消失,聚合物趋于颗粒状分布;共聚后聚合物的共轭程度下降,但其结晶性与电化学行为得到了一定的改善;当共聚物中联苯胺与二苯胺的单体摩尔比为1/2时,共聚物电化学行为最佳。     

三元无规芳—脂族聚酯酰胺的热致液晶行为

采用低湿溶液缩聚的方法合成了对苯二甲酰氯，二甲基联苯胺和己二醇为单体的芳酯族液晶聚酯酰胺。用ＤＳＣ，Ｘ光衍射分析和偏光显微镜等手段研究了该系列聚酯酰胺的热致液晶行为，确认了二甲基联苯胺单体用量在２０％（ｍｏｌ）的情况下，所得聚酯酰胺仍为向列型液晶聚合物。由于聚酯酰胺分子间聚酰胺链段之间的氢键作用，随着二甲基联苯胺用量增加至６０ｍｏｌ％时，所得的聚酯酰胺己无液晶转变温度，其液晶区间即从熔融温度直至分     

Furyl- and thienyl-silatranes and germatranes

We review our research on the synthesis and study of the physical and biological properties of furyl- and thienylgermatranes and -silatranes.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 6, pp. 725–732, June, 1992.     

Review and patents and literature

The use of the insect cell/baculovirus expression system for producing recombinant proteins of bacterial, plant, insect, and mammalian origin has become widespread. The popularity of this eukaryotic expression system is due to many factors, including (1) potentially high protein expression levels, (2) ease and speed of genetic engineering, (3) ability to accommodate large DNA inserts, (4) protein processing similar to higher eukaryotic cells (e.g., mammalian cells), and (5) ease of insect cell growth (e.g., suspension growth). The following review of the literature discusses two engineering aspects of recombinant protein synthesis by insect cell cultures: bioreactor scale-up and insect cell line selection. Following this review patent abstracts and additional literature pertaining to expression of recombinant proteins in insect cell culture are listed.     

多环芳二酐型聚酯亚胺膜的透气性能

多环芳二酐型聚酯亚胺膜的透气性能李悦生，丁孟贤，徐纪平（浙江大学高分子科学与工程研究所，杭州，３１００２７）（中国科学院长春应用化学研究所）关键词聚醚酰亚胺，聚酯酰亚胺，膜，透气性通常的聚酰亚胺加工性能较差，在芳环二酐的苯环间引入醚键等柔性基团后，其...     

微量元素与疾病诊断治疗的研究现状及展望

对国内外微量元素与疾病的关系及其诊断治疗的研究现状及研究动向进行了综述，包括：微量元素与地方病、癌肿、心血管病、糖尿病、眼病、神经系统病等。参考文献72篇。     

Preparation and photolysis of poly-p-ethylacrylophenone and poly-p-chloroacrylophenone and their copolymers with styrene and methyl methacrylate

Poly-p-ethylacrylophenone (PPEtAP) and poly-p-chloroacrylophenone (PPClAP) and their copolymers with styrene (PEtAP/S) and (PClAP/S) and with methyl methacrylate (PEtAP/MMA) and (PClAP/MMA) were prepared. Quantum yields of main-chain scissions at 366 nm at room temperature in benzene solution are of the same order as those of the unsubstituted polyacrylophenone and its copolymers. Substitution with chlorine and ethyl group in the para position compared to the unsubstituted polyacrylophenone and its copolymers leads to an increase of the lifetime for the n–π^* excited triplet state, as is evident from the measured quenching constants of photolysis. The low-temperature emission spectra of the copolymers are similar to the spectra of the model compounds in a polymer film. For the homopolymer, however, the character of the emission spectrum changes considerably.     

Concentrations and distributions of trace and minor elements in Chinese and Canadian coals and ashes

A total of 35 trace and minor elements including some of environmental significance were determined in each of a selection of 15 Chinese and 6 Canadian thermal coals and their ashes by using the SLOWPOKE-2 nuclear reactor facility of the University of Toronto. The concentrations and distributions of these constituents among the coals and their combustion products (viz. ash and volatile matter) are presented together with an interpretation of their significance in relation to the large scale combustion of these coals as thermal fuels in industrialized countries such as China and Canada. The detailed results showed wide variations in trace impurity concentrations (up to a factor of 100 and more) among the coals studied with few large differences between those of Chinese and Canadian origin except that the rare earths, Sc, Th, U, I, and Se were much higher in the former, other halogens, As and Na were lower. Values for elemental enrichment factors (EF) relative to normal crustal abundances indicated that only As(EF=13), Br(5.7), I(16), S(230), Sb(11) and Se(320) were appreciably enriched in coal. During static ashing at 750°C most of the halogens, S and Se were volatilized whereas most other inorganic constituents were highly retained and concentrated in the ash by factors of 6 to 11.