conducting polymers
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2022 ◽  
Vol 12 (1) ◽  
Author(s):  
Jorge Morgado

AbstractThe electrical double layer (EDL) formed at the interface between various materials and an electrolyte has been studied for a long time. In particular, the EDL formed at metal/electrolyte interfaces is central in electrochemistry, with a plethora of applications ranging from corrosion to batteries to sensors. The discovery of highly conductive conjugated polymers has opened a new area of electronics, involving solution-based or solution-interfaced devices, and in particular in bioelectronics, namely for use in deep-brain stimulation electrodes and devices to measure and condition cells activity, as these materials offer new opportunities to interface cells and living tissues. Here, it is shown that the potential associated to the double layer formed at the interface between either metals or conducting polymers and electrolytes is modified by the application of an electric field along the conductive substrate. The EDL acts as a transducer of the electric field applied to the conductive substrate. This observation has profound implications in the modelling and operation of devices relying on interfaces between conductive materials (metals and conjugated polymers) and electrolytes, which encompasses various application fields ranging from medicine to electronics.


2022 ◽  
Author(s):  
Bradley Gobin ◽  
Nicholas Harvey ◽  
Charles Arnold ◽  
Sean Whalen ◽  
Greg Young
Keyword(s):  

2022 ◽  
pp. 407-434
Author(s):  
Simonas Ramanavicius ◽  
Megha A. Deshmukh ◽  
Roxana-Mihaela Apetrei ◽  
Almira Ramanaviciene ◽  
Ieva Plikusiene ◽  
...  

2022 ◽  
Author(s):  
Sara Marina ◽  
Edgar Gutierrez ◽  
Junkal Gutierrez ◽  
Marco Gobbi ◽  
Nicolas Ramos ◽  
...  

Precise determination of structural organization of semi-conducting polymers is of paramount importance for the further development of these materials in organic electronic technologies. Yet, prior characterization of some of the...


Sensors ◽  
2021 ◽  
Vol 21 (24) ◽  
pp. 8470
Author(s):  
Joaquín Rafael Crespo-Rosa ◽  
Alfonso Sierra-Padilla ◽  
Juan José García-Guzmán ◽  
David López-Iglesias ◽  
Dolores Bellido-Milla ◽  
...  

In this work, template-free nanostructured conducting polymers (nCPs)-embedded gold nanoparticles (AuNPs) from aniline, thiophene and 3,4-ethylenedioxythiophene have been prepared via a one-pot sonochemical method. The synthesis of the nanocomposite (nCPs-AuNPs) was achieved in a short period of time (5–10 min), by applying high-energy ultrasound to an aqueous mixture of a CP precursor monomer and KAuCl4, in the presence of LiClO4 as dopant. The synthesis process is simpler, greener and faster in comparison to other procedures reported in the literature. Remarkably, bulk quantities of doped polyaniline PANI-AuNPs nanofibers were obtained. Subsequently, they were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS) and Fourier transform infrared spectroscopy (FTIR), as well as by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). PANI-AuNPs nanofibers were also employed as immobilization matrix for a benchmark enzyme, glucose oxidase (GOX). Finally, glucose was determined in real samples of white and red wines by using the so-obtained GOX-PANI-AuNPs/Sonogel-Carbon biosensor, providing outstanding recoveries (99.54%). This work may offer important insights into the synthesis of nanostructured conducting polymers and also stimulates the exploration of the applications of these nanocomposites, especially in research fields such as (bio)sensors, catalysis and composite materials.


Author(s):  
David Mecerreyes ◽  
Gregorio Guzmán-González ◽  
Soline Vauthier ◽  
Marta Alvarez-Tirado ◽  
Stéphane Cotte ◽  
...  

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