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导电聚合物(聚苯胺,聚吡咯,聚噻吩)作为超级电容器电极材料的研究引起了人们广泛的兴趣,该类材料制备的超级电容器具有成本低、容量高、充放电时间短、环境友好和安全性高等优点。本文综述了近年来基于导电聚合物及其与无机材料(碳材料/金属氧化物材料)复合所得电极材料在超级电容器中的应用进展,指出具有纳米结构导电聚合物材料及导电聚合物与无机纳米材料的复合是超级电容器电极材料研究的重要发展方向。 相似文献
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将十二烷基苯磺酸掺杂的聚苯胺(PAn DBSA)与乙烯丙烯酸共聚物(EAA)或聚烯烃弹性体(POE)进行溶液共混制得了PAn DBSA/EAA或PAn DBSA/POE导电复合物。研究了绝缘聚合物的化学结构对聚苯胺导电复合物形态结构及电性能影响。结果表明,极性聚合物EAA中的羧基能与PAn形成氢键并发生掺杂作用,复合物中卷曲的PAn主链能充分展开,导致PAn/EAA复合物具有非常低的逾渗域值(1.5%),PAn含量为20.0%时,电导率高达7.1S/cm。POE为非极性共聚物,与极性较强的PAn相容性较差,导致PAn/POE复合物具有较高逾渗域值(5.0%),PAn含量为20.0%时,电导率仅为3.0×10-5S/cm。 相似文献
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对聚苯胺、聚吡啶等共轭聚合物与非导电聚合物材料的复合体系的结构和性能进行了综述。不同方法制备的复合材料在结构和性能上各有特点。一般共轭聚合物与非导电高分子材料相容性差、尤其是低极性高分了。 相似文献
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高分子量聚苯胺/碳纳米管复合材料的合成与表征 总被引:8,自引:0,他引:8
在导电聚合物中,聚苯胺(PANI)因其导电性能优良,环境稳定性好,合成工艺简单,原料成本低廉等优点,被认为是最有可能实际应用的导电聚合物.然而用传统方法合成的聚苯胺由于其分子量小,分子链中存在缺陷而使其导电性能和力学性能大大降低,从而限制了其实际应用.而高分子量聚苯胺的导电性能和力学性能比一般聚苯胺有较大的提高. 相似文献
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在制得可溶性聚苯胺基础上,研究了聚苯胺与聚苯甲酰胺在二甲基乙酰胺(含3.5%LiCl)中的共混溶液行为并绘出其三元相图。研制了不同配比的聚苯胺/聚苯甲酰胺共混膜。测试结果表明,在聚苯胺中混入20%PBA后其拉伸强度可增加2~3倍且其导电率可达7.5S/cm。考察了混合比对共混薄膜的导电率和力学性能的影响.SEM及X-衍射结果表明聚苯胺/聚对苯甲酰胺共混物存在着明显的微观相分离. 相似文献
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由于在电致变色、显示、军事等领域的广泛应用,电致变色材料受到了人们越来越多的关注。本文综述了聚苯胺(PANI)类、聚噻吩(PTh)类、聚吡咯(PPy)类及复合导电聚合物电致变色材料的性能及其研究进展,同时简单地叙述了这些材料作为电致变色材料的应用前景,指出具有丰富颜色变化、良好的稳定性及成膜性的共聚物及有机/无机复合导电聚合物材料是未来电致变色材料发展的方向。 相似文献
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导电聚合物作为一种新型高分子材料,由于具有可逆的氧化还原特性,在金属腐蚀防护领域具有潜在的应用前景。在众多的导电聚合物中,聚苯胺因其具有独特的抗点蚀、抗划伤和防止海洋生物附着等特殊性能,被广泛应用于金属材料、化学工业和航海航天等领域, 逐渐成为防腐涂料领域的研究热点。本文通过对单一聚苯胺涂层防腐性能不足的分析,系统总结了近年来改性聚苯胺涂层在金属腐蚀防护领域的研究进展,包括单一环取代聚苯胺涂层和N取代聚苯胺涂层、改性聚苯胺复合涂层和改性聚苯胺复合材料/树脂共混复合涂层;通过各种腐蚀测试手段比较了改性聚苯胺涂层与未改性聚苯胺涂层之间防腐性能的优劣,进一步证明了供电子取代基(如烷基、烷氧基和氨基等)能够提高聚苯胺涂层的防腐性能,复合改性或与树脂共混也能够提高聚苯胺及其衍生物涂层的防腐性能;同时展望了聚苯胺及其衍生物涂料未来发展的新趋势。 相似文献
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原位化学氧化聚合制备聚苯胺/丝素复合导电膜 总被引:1,自引:0,他引:1
采用原位化学氧化聚合方法在蚕丝丝素蛋白膜表面生长聚苯胺,制备得到表面均匀覆盖导电聚合物的复合导电丝素膜,其电导率约为3×10^-2S/cm。纤维表面与导电聚合物的相互作用改善了原丝素膜的耐热性能,但并未降低其力学性能。 相似文献
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Uroš Grošelj Mojca Žorž Amalija Golobič Branko Stanovnik Jurij Svete 《Tetrahedron》2013,69(52):11092-11108
A new and simple synthesis of novel N-protected methyl 5-substituted-4-hydroxypyrrole-3-carboxylates, which exist in equilibrium with their 4-oxo tautomers, has been developed in two steps starting from N-protected α-amino acids. The key intermediates are enaminones, which can also be isolated, characterized, and used for the construction of other functionalized heterocycles, before they spontaneously decompose to pyrrole products. 4-Hydroxypyrroles are prone to partial aerial oxidation but can be efficiently alkylated or reduced to stable polysubstituted pyrrolidine derivatives. 相似文献
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The chemoselectivity in the intramolecular CH insertion of various diazosulfonamides has been experimentally studied. The results reveal that the aliphatic 1,4-, 1,5-, or 1,6-C(sp3)?H insertions of diazosulfonamides are not accessible, while the aromatic 1,5-C(sp2)?H insertion can be realized specifically by adjusting the diazo-adjacent group. In addition, the general chemoselectivities in the intramolecular CH insertions of diazosulfonyl compounds are summarized. Generally, diazosulfones undergo both aromatic 1,5-C(sp2)?H and aliphatic 1,5- and 1,6-C(sp3)?H insertions, while diazosulfonates undergo aliphatic 1,5- and 1,6-C(sp3)?H insertions. However, diazosulfonamides only undergo aromatic 1,5-C(sp2)?H insertion. 相似文献
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N-Heterocyclic carbene-palladacyclic complexes 3 were successfully achieved in a one-pot procedure under mild conditions. The structure of 3a was unambiguously confirmed by X-ray single crystal diffraction and it was an active catalyst in the Buchwald-Hartwig amination and α-arylation of ketones even at very low catalyst loadings (0.01?mol%). 相似文献
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Shashikant U. Dighe Surya K. Samanta Shivalinga Kolle Sanjay Batra 《Tetrahedron》2017,73(17):2455-2467
An efficient iodine-mediated oxidative Pictet-Spengler reaction in dimethyl sulphoxide (DMSO) using terminal alkynes as the 2-oxoaldehyde surrogate for the synthesis of aryl (9H-pyrido[3,4-b]indol-1-yl)methanones is described. The scope of the protocol includes the total synthesis of Fascaplysin, Eudistomins Y1 and Y2. The methodology is extended for preparing pyrrolo[1,2-a]-quinoxaline and indolo[1,5-a]quinoxaline derivatives. The utility of 1-aroyl-β-carbolines was demonstrated by performing palladium-catalyzed β-carboline directed ortho-C(sp2)-H functionalization of the phenyl ring with thiomethyl (SMe) group using DMSO as source and for accessing 4-aryl-canthin-6-ones. 相似文献
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In this Letter, we described a facile method for constructing fused bicyclic 1-arylpyrazol-5-one ring system. We employed various methylene-containing carboxylic acids as the substrates and proved that the pyrazolone ring closure requires activated methylene group in intermediate II. Accordingly, a series of structurally diversified, fused bicyclic 1-arylpyrazol-5-ones was prepared in moderate to high yields using the requisite substrates. 相似文献
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Synthesis of substituted pyrrolo[1,2-a]pyrazines and pyrazino[1,2-a]indoles from the Morita-Baylis-Hillman derivatives of acrylates via saponification followed by Curtius reaction is described. 相似文献
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用正丁胺作为碳源,采用射频辉光放电制备碳膜,选用激光染料R6G和聚乙二醇混合液作为蒸气源,采用单源热蒸发,在蒸发室与染料同时沉积得到混合膜,用拉曼光谱和红外光谱分析了碳膜的结构和键合方式,分析表明:碳膜中存在胺基团和氢原子.混合膜的荧光谱测量结果表明,认为正丁胺对染料荧光谱的影响是因为胺基和氢原子的存在. 相似文献
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Jona Mirnik Eva Pušavec Kirar Sebastijan Ričko Uroš Grošelj Amalija Golobič Franc Požgan Bogdan Štefane Jurij Svete 《Tetrahedron》2017,73(24):3329-3337
A series of 20 CuAIAC reactions between eight 4-acylamino substituted pyrazolidine-3-one-1-azomethine imines and four terminal ynones were performed using Cu0 as catalyst. The corresponding fluorescent cycloadducts were obtained in very high yields upon simple workup. Thus, Cu-metal turned out to be a better catalyst than CuI in terms of yield and ease of isolation. Availability of azomethine imines, mild reaction conditions, and simple workup enable a “click” access to libraries of densely substituted 2,3-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-ones. Reactivity of differently substituted dipoles was evaluated experimentally and by quantum chemical methods (DFT). 相似文献
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George E. Magoulas Thomas Garnelis Constantinos M. Athanassopoulos Dionissios Papaioannou George Mattheolabakis Konstantinos Avgoustakis Dimitra Hadjipavlou-Litina 《Tetrahedron》2012,68(35):7041-7049
(E)-4-(Fullerenopyrrolidin-1-yl)-3-methylbut-2-enoic acid and its corresponding succinimidyl ester, readily obtained through Prato-type modification of C60, were used for the selective N-acylation of polyamines. The thus obtained conjugates were evaluated for their antioxidative and anti-inflammatory activity and their cytotoxicity was determined. Members of this family of compounds showed interesting anti-lipid peroxidation, anti-lipoxygenase and anti-inflammatory activity and comparable cytocompatibility to spermidine. 相似文献