Conductive polymer

About: Conductive polymer is a research topic. Over the lifetime, 21817 publications have been published within this topic receiving 692491 citations. The topic is also known as: intrinsically conducting polymer & ICP.

Conducting Polymer Dough for Deformable Electronics.

Abstract: UNLABELLED A simple strategy for changing a brittle conducting polymer ( PEDOT PSS) into a solution-processed highly deformable viscoelastic polymer is presented. Rapid self-healing of conductivity, customer-designed LEDs with complex micro-patterns, and foldable stretchable LEDs are demonstrated.

High permittivity polyaniline–barium titanate nanocomposites with excellent electromagnetic interference shielding response

Abstract: Organic conductive polymers are at the forefront of materials science research because of their diverse applications built around their interesting and unique properties. This work reports for the first time a correlation between the structural, electrical, and electromagnetic properties of polyaniline (PANI)–tetragonal BaTiO3 (TBT) nanocomposites prepared by in-situ emulsion polymerization. XRD studies and HRTEM micrographs of these nanocomposites clearly revealed the incorporation of TBT nanoparticles in the conducting PANI matrix. EPR and XPS measurements reveal that increase in loading level of BaTiO3 results in a reduction of the doping level of PANI. The Ku-Band (12.4–18 GHz) network analysis of these composites shows exceptional microwave shielding response with absorption dominated total shielding effectiveness (SET) value of −71.5 dB (blockage of more than 99.99999% of incident radiation) which is the highest value reported in the literature. Such a high attenuation level, which critically depends on the fraction of BaTiO3 is attributed to optimized dielectric and electrical attributes. This demonstrates the possibility of using these materials in stealth technology and for making futuristic radar absorbing materials (RAMs).

Dual electron donor/electron acceptor character of a conjugated polymer in efficient photovoltaic diodes

Abstract: The authors report efficient photovoltaic diodes which use poly((9,9-dioctylfluorene)-2,7-diyl-alt-[4,7-bis(3-hexylthien-5-yl)-2,1,3-benzothiadiazole]-2′,2″-diyl) (F8TBT) both as electron acceptor, in blends with poly(3-hexylthiophene), and as hole acceptor, in blends with (6,6)-phenyl C61-butyric acid methyl ester In both cases external quantum efficiencies of over 25% are achieved, with a power conversion efficiency of 18% under simulated sunlight for optimized F8TBT/poly(3-hexylthiophene) devices The ambipolar nature of F8TBT is also demonstrated by the operation of light-emitting F8TBT transistors The equivalent p- and n-type operation in this conjugated polymer represent an important extension of the range of useful n-type materials which may be developed

Enhanced thermoelectric properties of CNT/PANI composite nanofibers by highly orienting the arrangement of polymer chains

Abstract: Carbon nanotube (CNT)/Polyaniline (PANI) thermoelectric composite nanofibers were prepared by a combination of in situ polymerization and electro-spinning processes. The obtained composite nanofibers were macroscopically aligned, while the CNTs were embedded in the nanofibers and oriented along the fiber axis. Polarized Raman spectra and X-ray diffraction (XRD) studies verified that the PANI backbone chains were orientated along the CNT axis and therefore along the fiber axis due to the strong chemical interactions between PANI and CNTs. The highly ordered arrangement of the PANI backbone chains not only reduces the π–π conjugated defects in the polymer backbone, but also increases the effective degree of electron delocalization and therefore enhances the carrier mobility in PANI, which results in the anisotropic thermoelectric properties especially with more than a doubled improvement of power factor in the orientation direction. This study not only provides an effective route to orient the conducting polymer chains at the molecular level but also demonstrates a possibility to design a conducting polymer with high thermoelectric performance through constructing a highly extended and orderly aligned backbone chain structure by chemical routes.