导电高分子材料的新进展

导电高分子材料在电子民领域有广泛的用途，通过引入侧链，共聚或中间体转换等方法可以制备可溶性电导高分子，从而提高其加工性能，光化学原位成形是加工导电高分子的新方法，通过该法可以获得微米级导电线务。本文还讨论导电高分子的导电机理。     

高分子复合导电材料及其应用发展趋势

本文介绍了高分子复合导电材料的概念及分类，重点讨论了高分子复合导电材料的导电机理、影响导电性能的主要因素及其在抗静电和导电、自控温发热材料、压敏导电胶、电磁波屏蔽等领域的应用，并对当前高分子复合导电材料的发展趋势和最新研究开发进展作了较详细的介绍。     

可溶性导电高分子的合成方法

导电高分子在电子和光电子领域具有广泛的用途。可通过合成可溶性前驱体 ,引入侧基 ,使通用高分子和导电高分子的复合化的方法来提高导电高分子的可溶性     

导电高分子材料应用的最新进展与展望

导电高分子材料是一种同时具有金属般良好导电性和有机材料般柔韧加工性的新型材料,在防腐、能源、传感、光电领域等方面应用广泛。综述了当前导电高分子的最新情况,并重点介绍了导电高分子材料在金属防腐、超级电容器、传感器、隐身材料、电致变色、电致发光、自愈合等7个研究方向的最新动态,对其中每一种聚合物及其复合材料的制备方法和性能效果都做了叙述,最后介绍了导电高分子材料在多个领域的应用前景。导电高分子材料作为一门新兴学科正处于发展阶段,相信导电高分子材料理论和应用的研究将进一步推动导电高分子材料领域的深入发展。     

芳香族电子导电高分子的应用和进展

芳香族导电高分子由于同时具有金属或半导体的导电性能和芳香族聚合物热稳定性高，化学稳定性好，质轻牢固及良好的加工成型性的特点，春应用正受到人们越来越多的关注。文中综述了芳香族电子导电高分子的应用和研究进展，指出其存在问题和解决方法。     

导电高分子聚苯胺及其应用

聚苯胺 (PANI)是研究最为广泛的导电高分子材料。本文介绍了导电高分子的掺杂原理和常用方法 ,以及PANI的结构与性能 ,综述了PANI的一些主要应用研究和领域     

导电高分子材料的进展

主要论述了导电高分子材料的种类、发展概况及其应用 ,对新近开发的复合型导电高分子材料产品进行了介绍 ,并对导电高分子材料的发展进行了展望。     

智能型高分子水凝胶的应用研究现状

介绍了智能型高分子和高分子水凝胶在分子器件、调光材料、生物医学等高新技术领域的应用研究现状。     

导电高分子材料的性能及应用

本文论述了各类导电高分子材料的性能及其应用，导电高分子材料除可用作电器元件外，还可用作二次电池的电极材料、防静电涂层及电显示材料等，是一类性能优异的新型功能材料。     

填充型聚合物基气敏导电复合材料

作为一种功能性复合材料，填充型聚合物基气敏导电复合材料在生物医学、化学化工以及环境科学等领域具有广阔的应用前景，综述了填充型聚合物基气敏导电复合材料的导电机制，影响因素及其近斯的研究进展。     

Effect of borax additive on the dielectric response of polypyrrole

The main aim of this study is to produce added polypyrrole (PPy) borax composites with high dielectric properties for technological applications. For this purpose, PPy–borax composites with different borax concentrations varying from 10 to 50 wt% have been prepared. To reveal their structural and morphological attributes, the composites have been characterized by Fourier-transform infrared spectroscopy and scanning electron microscopy. The real and imaginary parts of complex dielectric function, the imaginary component of complex electrical modulus and ac conductivity have been investigated at room temperature as a function of frequency in the range 100 Hz–15 MHz. It has been found that addition of borax increases the dielectric constant of pure PPy. In this respect, PPy–borax composites with the highest dielectric constant at low frequency may be utilized in charge storing devices. On the other hand, the dielectric loss is also very high in low-frequency region for the composites with high borax content. Exploiting this property, the material may also be used in decoupling capacitor applications. The relaxation mechanisms of the samples have also been determined as non-Debye type. The Nyquist curves of the samples have been analysed for calculating the grain and grain boundary resistance and capacitance values. In conclusion, borax has a promising potential to be used as a cheap and effective filler for improving the dielectric properties of PPy polymer.     

聚吡咯的制备、改性及应用进展

介绍了聚吡咯的导电机理和制备方法,重点综述了近几年来聚吡咯的改性方法以及聚吡咯在相关领域的应用进展。     

Investigation of structural and optical properties of the CdS and CdS/PPy nanowires

In this study, cadmium sulfide (CdS), polypyrrole (PPy) nanowires, and their heterojunctions have been electrochemically synthesized. Morphology of the nanowires has been investigated by scanning electron microscopy. Energy dispersed X-ray, X-ray diffraction, UV–Vis, and FTIR analyses have been used to confirm structure of both CdS and PPy nanowires. For the first time with this study, CdS/PPy nanowire heterojunctions have been integrated into photoelectrochemical (PEC) cells. It has been also demonstrated that PEC performance of the nanowires was strongly function of production conditions, such as deposition time and voltage. The maximum power conversion efficiency of the CdS nanowires obtained in this study was 1.36%. Moreover, efficiencies of the CdS/PPy nanowires have been reached to 5.00%, which makes them very favorable for PEC applications.     

Conducting polypyrrole in tissue engineering applications

Polypyrrole （PPy）, the earliest prepared conducting polymer, has good biocompatibility, easy synthesis and flexibility in processing. Compared with metal and inorganic materials, doped PPy has better mechanical match with live tissue, resulting in its many applications in biomedical field. This mini-review presents some information on specific PPy properties for tissue engineering applications, including its synthesis, doping, bio-modiflcation. Although some challenges and unanswered problems still remain, PPy as novel biomaterial has promoted the development tissue engineering for its clinical application in the future.     

聚吡咯在气体传感器中的应用

利用聚吡咯(PPy)导电聚合物构建的气体传感器可检测常见的无机气体和可挥发性有机物(VOCs).综述了PPy基气体传感器的制备、气敏机制及其在气体检测方面的应用.影响其气敏性能的重要因素包括掺杂(特别是质子酸掺杂)、复合或填充处理、制备工艺、被检测气体或蒸气的性质及外界条件等.     

Polypyrrole-based conducting polymers and interactions with biological tissues

Polypyrrole (PPy) is a conjugated polymer that displays particular electronic properties including conductivity. In biomedical applications, it is usually electrochemically generated with the incorporation of any anionic species including also negatively charged biological macromolecules such as proteins and polysaccharides to give composite materials. In biomedical research, it has mainly been assessed for its role as a reporting interface in biosensors. However, there is an increasing literature on the application of PPy as a potentially electrically addressable tissue/cell support substrate. Here, we review studies that have considered such PPy based conducting polymers in direct contact with biological tissues and conclude that due to its versatile functional properties, it could contribute to a new generation of biomaterials.     

Electrically controlled drug release from nanostructured polypyrrole coated on titanium

Previous studies have demonstrated that multi-walled carbon nanotubes grown out of anodized nanotubular titanium (MWNT-Ti) can be used as a sensing electrode for various biomedical applications; such sensors detected the redox reactions of certain molecules, specifically proteins deposited by osteoblasts during extracellular matrix bone formation. Since it is known that polypyrrole (PPy) can release drugs upon electrical stimulation, in this study antibiotics (penicillin/streptomycin, P/S) or an anti-inflammatory drug (dexamethasone, Dex), termed PPy[P/S] or PPy[Dex], respectively, were electrodeposited in PPy on titanium. The objective of the present study was to determine if such drugs can be released from PPy on demand and (by applying a voltage) control cellular behavior important for orthopedic applications. Results showed that PPy films possessed nanometer-scale roughness as analyzed by atomic force microscopy. X-ray photoelectron spectroscopy confirmed the presence of P/S and Dex encapsulated within the PPy films. Results from cyclic voltammetry showed that 80% of the drugs were released on demand when sweep voltages were applied for five cycles at a scan rate of 0.1 V s(-1). Furthermore, osteoblast (bone-forming cells) and fibroblast (fibrous tissue-forming cells) adhesion were determined on the PPy films. Results showed that PPy[Dex] enhanced osteoblast adhesion after 4 h of culture compared to plain Ti. PPy-Ti (with or without anionic drug doping) inhibited fibroblast adhesion compared to plain Ti. These in vitro results confirmed that electrodeposited PPy[P/S] and PPy[Dex] can release drugs on demand to potentially fight bacterial infection, reduce inflammation, promote bone growth or reduce fibroblast functions, further implicating the use of such materials as implant sensors.     

Conductive poly(methyl methacrylate)-polypyrrole dodecylbenzenesulfonate (PMMA-PPy.DBSA) blends prepared in solution in the presence of hydroquinone

Polypyrrole doped with dodecylbenzenesulfonic acid (PPy.DBSA) was synthesized. The solubility parameters were calculated, the most suitable solvent (chloroform) was chosen for the solubility and the most compatible polymer [poly(methyl methacrylate), PMMA] was selected for blending. Hydroquinone was used as a compatibilizer to maximize the miscibility of PPy.DBSA with PMMA, which facilitated easy processing of flexible and mechanically strong conductive PPy films for device applications. Electrical properties of PPy.DBSA-PMMA blends were studied in the presence of hydroquinone. Flexible and free standing films with different compositions of PPy.DBSA in PMMA were cast onto glass substrates. Optical micrographs showed a low level of phase separation in the presence of hydroquinone. Thermal events under DSC analysis showed temperature shifts relative to those of the pure polymers, supporting the evidence for attractive interactions between the polymers.     

Synthesis of core-shell Au@polypyrrole nanocomposite using a dendrimer-template approach

Conducting polymeric nanostructures have been reported recently, which were produced from polypyrrole (PPy), including hollow nanocapsules, nanofibers, nanoporous membranes, nanowires, and nanofilms. In most cases, new synthetic routes were used aimed at controlling specific properties of these conducting nanostructures at the molecular level. In this communication we present a new chemical route to synthesize polypyrrole-based nanocomposites, in which polyamidoamine (PAMAM) dendrimers encapsulating Au nanoparticles are used as template. The two-step synthesis comprises the reduction of Au nanoparticles inside PAMAM molecules followed by PPy polymerization around the PAMAM-Au nanoparticles. The structure of the core-shell PAMAM-gold@polypyrrole nanospheres comprises a 40 nm PPy shell enclosing a core of 3 nm gold nanoparticles, as revealed by Transmission Electronic Microscopy (TEM). This new, environmentally-friendly approach may be suitable to produce hybrid nanomaterials for applications in catalysis, batteries, sensors, and micro/nanoelectronic devices.     

Highly aligned ultrahigh density arrays of conducting polymer nanorods using block copolymer templates

Ultrahigh density arrays of conducting polypyrrole (PPy) nanorods are fabricated directly on the indium-tin oxide coated glass by an electropolymerization within a porous diblock copolymer template. The nanorods are shown to have conductivity much higher than thin PPy films, due to the high degree of chain orientation, even though the separation distance for two neighboring PPy main chains is as small as 0.37 nm. The ultrahigh density arrays of conducting polymer nanorods have potential applications as sensor materials, nanoactuators, and organic photovoltaic devices.