Effect of Face-to-Face and Side-to-Side Interchain Interactions on the Electron Transport in Emeraldine Salt Polyaniline

2021 ◽  
Author(s):  
Veinardi Suendo ◽  
Yenni Lau ◽  
Ferdinand Hidayat ◽  
Muhammad Reza ◽  
Albaaqi Qadafi ◽  
...  
Keyword(s):  
Electron Transport ◽  
Broad Spectrum ◽  
Conductive Polymer ◽  
High Conductivity ◽  
Emeraldine Salt ◽  
Face To Face ◽  
Doping Mechanism ◽  
Interchain Interactions

Polyaniline (PANI) is a conductive polymer that has been studied intensively due to its high conductivity, ease of synthesis, fascinating doping mechanism, and a broad spectrum of applications. Polyaniline doped...

scholarly journals A highly conductive fibre network enables centimetre-scale electron transport in multicellular cable bacteria

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Filip J. R. Meysman ◽  
Rob Cornelissen ◽  
Stanislav Trashin ◽  
Robin Bonné ◽  
Silvia Hidalgo Martinez ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Electron Transport ◽  
Charge Transport ◽  
Cell Envelope ◽  
High Conductivity ◽  
Biological Structure ◽  
Electrical Currents ◽  
Fibre Network

Abstract Biological electron transport is classically thought to occur over nanometre distances, yet recent studies suggest that electrical currents can run along centimetre-long cable bacteria. The phenomenon remains elusive, however, as currents have not been directly measured, nor have the conductive structures been identified. Here we demonstrate that cable bacteria conduct electrons over centimetre distances via highly conductive fibres embedded in the cell envelope. Direct electrode measurements reveal nanoampere currents in intact filaments up to 10.1 mm long (>2000 adjacent cells). A network of parallel periplasmic fibres displays a high conductivity (up to 79 S cm−1), explaining currents measured through intact filaments. Conductance rapidly declines upon exposure to air, but remains stable under vacuum, demonstrating that charge transfer is electronic rather than ionic. Our finding of a biological structure that efficiently guides electrical currents over long distances greatly expands the paradigm of biological charge transport and could enable new bio-electronic applications.

Conductive Polymer–Exoelectrogen Hybrid Bioelectrode with Improved Biofilm Formation and Extracellular Electron Transport

2019 ◽  
Vol 5 (8) ◽  
pp. 1900320 ◽  
Author(s):  
Pengbo Zhang ◽  
Xin Zhou ◽  
Ruilian Qi ◽  
Panpan Gai ◽  
Libing Liu ◽  
...  
Keyword(s):  
Electron Transport ◽  
Biofilm Formation ◽  
Conductive Polymer ◽  
Extracellular Electron Transport

scholarly journals The importance of sulfonate to the self-doping mechanism of the water-soluble conjugated polyelectrolyte PCPDTBT-SO3K

2020 ◽  
Vol 4 (12) ◽  
pp. 3556-3566 ◽  
Author(s):  
David Xi Cao ◽  
Dirk Leifert ◽  
Viktor V. Brus ◽  
Matthew S. Wong ◽  
Hung Phan ◽  
...  
Keyword(s):  
Conductive Polymer ◽  
Water Soluble ◽  
The Self ◽  
Conjugated Polyelectrolyte ◽  
Doping Mechanism

In-depth understanding of the doped and de-doped states of CPE-K, a unique, water-soluble, highly conductive polymer.

A Study on the Synthesis, Characterization and Properties of Polyaniline Nanofibers Using Ferric Chloride as both Oxidant and Dopant

2013 ◽  
Vol 807-809 ◽  
pp. 2757-2761
Author(s):  
Hang Jun Ding ◽  
Zhou Yang ◽  
Huai Yang ◽  
Mei Xiang Wan
Keyword(s):  
Ferric Chloride ◽  
Main Chain ◽  
Ftir Spectra ◽  
High Conductivity ◽  
Probe Method ◽  
Synthetic Methods ◽  
Emeraldine Salt ◽  
Salt Form ◽  
Polyaniline Nanofibers ◽  
Uv Visible

PANI nanofibers with a really nanoscaled diameter of 20 ~ 30 nm and a high conductivity of 100 S/cm were successfully prepared by using FeCl3 · 6H2O as oxidant at the acidic dopant-free. Compared with other synthetic methods for nanostructures, this approach is most simple and cheap because of FeCl3 · 6H2O having two-function of oxidant and dopant at the same time, resulting in further simplifying reaction reagents. Characterizations of UV-visible, FTIR spectra, XRD as well as conductivity measured by four-probe method definitely proved the nanofibers oxidized by FeCl3 as oxidant at dopant-free are identical to the emeraldine salt form of PANI, although without external acidic dopant, and Cl- anion is incorporated the PANI main chain as counter-ion.

Ionic liquid entrapment by an electrospun polymer nanofiber matrix as a high conductivity polymer electrolyte

RSC Advances ◽  
2015 ◽  
Vol 5 (60) ◽  
pp. 48217-48223 ◽  
Author(s):  
R. S. Datta ◽  
S. M. Said ◽  
S. R. Shahrir ◽  
Norbani Abdullah ◽  
M. F. M. Sabri ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Polymer Electrolyte ◽  
Conductive Polymer ◽  
High Conductivity ◽  
Polymer Nanofibers ◽  
Polymer Nanofiber

Through external doping, novel conductive polymer nanofibers were successfully fabricated using ionic liquids.

N-type cathode interlayer based on dicyanomethylenated quinacridone derivative for high-performance polymer solar cells

2016 ◽  
Vol 4 (6) ◽  
pp. 2169-2177 ◽  
Author(s):  
Weiping Chen ◽  
Junjie Lv ◽  
Jianxiong Han ◽  
Youchun Chen ◽  
Tao Jia ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
High Performance ◽  
Polymer Solar Cells ◽  
High Conductivity ◽  
High Performance Polymer ◽  
Cathode Interlayer

An n-type cathode interlayer with a wide thickness range is used in high-performance polymer solar cells due to its good electron transport ability and high conductivity.

A one-dimensional silver(I) coordination polymer based on an asymmetric flexibleN-donor carboxylate ligand:catena-poly[(μ3-4-{[(1-phenyl-1H-tetrazol-5-yl)sulfanyl]methyl}benzoato-κ3O:O′:N4)silver(I)]

2014 ◽  
Vol 70 (3) ◽  
pp. 292-296
Author(s):  
Hai-Na Zhang ◽  
Qing-Fu Zhang ◽  
Jia-Jia Wang ◽  
Ai-Jing Geng ◽  
Chong Zhang
Keyword(s):  
Title Compound ◽  
Room Temperature ◽  
Three Dimensional ◽  
Aromatic Rings ◽  
Green Luminescence ◽  
One Dimensional ◽  
Good Thermal Stability ◽  
Face To Face ◽  
Interchain Interactions ◽  
The One

The title compound, [Ag(C15H11N4O2S)]n, was synthesized by the reaction of 4-{[(1-phenyl-1H-tetrazol-5-yl)sulfanyl]methyl}benzoic acid (Hptmba) with silver nitrate and triethylamine at room temperature. The asymmetric unit contains one crystallographically independent AgIcation and one ptmba−ligand. Each AgIcation is tricoordinated by two carboxylate O atoms and one tetrazole N atom from three different ptmba−ligands, displaying a distorted T-shaped geometry. Three AgIcations are linked by tris-monodentate bridging ptmba−ligands to form a one-dimensional double chain along thecaxis, which is further consolidated by an intrachain π–π contact with an offset face-to-face distance of 4.176 (3) Å between the centroids of two adjacent aromatic rings in neighbouring benzoate groups. The one-dimensional chains are linked into a three-dimensional supramolecular framework by additional π–π interchain interactions,viz.of 3.753 (3) Å between two phenyl substituents of the tetrazole rings and of 4.326 (2) Å between a benzoate ring and a tetrazole ring. Thermogravimetric analysis and the fluorescence spectrum of the title compound reveal its good thermal stability and a strong green luminescence at room temperature.

Research of Transparent Conductive Film Prepared with Polymer

2010 ◽  
Vol 663-665 ◽  
pp. 532-537 ◽  
Author(s):  
Lu Hai Li ◽  
Zhi Qing Xin ◽  
Wen Zhao ◽  
Xiao Jun Tang ◽  
Peng Du ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Sheet Resistance ◽  
Conductive Polymer ◽  
High Conductivity ◽  
High Transparency ◽  
Transparent Conductive Film ◽  
Conductive Film ◽  
Pet Film ◽  
Conductive Mechanism

In order to acquire conductive film with high transparency, conductive polymer PEDT: PSS was mixed with some polar dopants and some surfactants. The coating fluid was acquired and coated on the PET film with different coating rods, and conductive film was gotten after drying at some temperature. The conductive mechanism of polymer after doping was introduced. Furthermore, the influenced factors of conductivity were discussed, including different dopants and surfactants as well as dried temperature. It was concluded that DMSO and EG were the best dopants, that surfactants including fluoride or silicon were suited for high conductivity. The sheet resistance of conductive film can be less than 300 Ω/□ when dried at 130 oC, at the same time the transparency at 550 nm is more than 83%. After measuring with AFM, the surface of film was sharp and the surface roughness is 7nm.

scholarly journals Synthesis and Characterization of Bacterial Cellulose-Polyaniline Composite with Variation of Dopant Concentration

2021 ◽  
Vol 9 (2) ◽  
pp. 69
Author(s):  
Riza Ummami ◽  
Busroni Busroni ◽  
Bambang Piluharto
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Bacterial Cellulose ◽  
Room Temperature ◽  
Conductive Polymer ◽  
Emeraldine Base ◽  
Stable Form ◽  
Emeraldine Salt ◽  
Materials Synthesis ◽  
Base Composite

Polyaniline is a type of conductive polymer. Bacterial cellulose has high mechanical properties, so it can be made into polyaniline base composite materials. A stable form of polyaniline oxidation at room temperature is emeraldine base. The emeraldine base has a conductivity value of 10-6 S/cm. Dopants can change the shape of emeraldine base to emeraldine salt by protonation process. Emeraldine salt is a conductive form of polyaniline. The conductivity value of emeraldine salt is 0,03-0,07 S/cm. The addition of dopan in synthesis of polymer was carried out to determine its effect on the conductivity value. The disadvantage of polyaniline is that its mechanical properties are weak and easily brittle. Modifications are needed to improve the mechanical properties of polyaniline, one of which is the manufacture of composite. Bacterial celluloce has high mechanical properties so it can be made into polyaniline base composite materials. Synthesis of bacterial cellulose-polyaniline composites by in situ chemical polymerization methods. Syntehsis is started with BC membrane was dipped into aniline solution for about 2h with stirring at room temperature. The BC was immersed into ammonium peroxydisulfate solution for about 30m with stirring. The bacterial cellulose-polyaniline compositions obtained are black color which is characteristic of the emeraldine salt. The highest conductivity value of composite was obtained from the addition of 3,5M HCl dopant which was 4,70x10-4 S/cm. FTIR analysis of composite obtained peak of the characteristic polyanilin was conductive at 1565,92 cm-1 as C=C quinoid ring and 1442,95 cm-1 as C=C benzoid ring.

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