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Novel conductive multi-walled polymeric nanotubes of poly(diazoaminobenzene) for single-layer polymer solar cell
摘要： Novel conductive multi-walled polymeric nanotubes (MWPNTs) of poly(diazoaminobenzene) (PDAAB) were synthesized using diazoaminobenzene monomer for the first time in this report. The synthesis followed a one-pot, cost-effective, green and template-free procedure, in which aniline was used as initiator with 87% yield at room temperature. PDAAB was characterized with spectroscopic and microscopic methods such as Fourier-transform infrared (FTIR), UV-vis, X-ray diffractometry (XRD), transmission electron microscopy (TEM), field-emission scanning electron microscopy (FESEM) as well as cyclic voltammetry (CV) and conductivity measurements. In addition, MWPNTs were used in the design of a novel single-layer polymer solar cell. PDAAB was sandwiched between TiO2 nanoparticle-modified fluorine-doped tin oxide (FTO) electrode and an aluminum electrode (FTO-TiO2│PDAAB│Al), as anode and cathode, respectively. Finally, various physical characteristics of the single-layer polymer solar cell were determined under simulated solar irradiation. Our proof-of-concept study demonstrated that MWPNTs provided a promising platform to develop polymer-based solar energy conversion and storage systems.
关键词： multi-walled polymeric nanotube,aniline,conductive polymers,Poly(diazoaminobenzene),solar cell
更新于2025-09-23 15:19:57
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Buckled Conductive Polymer Ribbons in Elastomer Channels as Stretchable Fiber Conductor
摘要： Conductors that can sustain large strains without change in resistance are highly needed for wearable electronic systems. Here, the fabrication of highly stretchable coaxial fiber conductors through self-buckling of conductive polymer ribbons inside thermoplastic elastomer channels, using a “solution stretching–drying–buckling” process, is reported. The unique hierarchically buckled and conductive core in the axial direction makes the resistance of the fiber very stable, with less than 4% change when applying as much as 680% strain. These fibers can then be directly used as stretchable electrical interconnects or wearable heaters.
关键词： resistance change,conductive polymers,buckling,stretchable fiber conductors,coaxial fibers
更新于2025-09-16 10:30:52
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Core-shell nanocomposite of superparamagnetic Fe3O4 nanoparticles with poly(m-aminobenzenesulfonic acid) for polymer solar cells
摘要： Superparamagnetic Fe3O4 nanoparticles play a significant role in enhancing the performance and efficiency of polymer-based solar cells using nanocomposites. For the first time in this study, a novel superparamagnetic core-shell nanocomposite of poly(m-aminobenzenesulfonic acid) (PABS) and Fe3O4 was synthesized by in-situ polymerization of m-ABS as a monomer in the presence of FeCl3.6H2O as oxidant under solid-state conditions. The poly(m-aminobenzenesulfonic acid) (PABS)-Fe3O4 nanocomposite (NCPABS-Fe3O4) was characterized using scanning electron microscopy (SEM) and transmission electron microscopy (TEM) that revealed a core-shell morphology. Under simulated solar irradiation, the photovoltaic cell characteristics were measured. Based on our results, the polymer-hybrid solar cell was fabricated using FTO/TiO2/NCPABS-Fe3O4/Al and demonstrated a power conversion efficiency (PCE or η) 4.24% that was approximately 660% higher than those obtained from FTO/TiO2/(PABS)/Al. We have also proposed a new mechanism for the 660% enhanced efficiency. To the best of our knowledge, this is the highest enhancement reported in the literature. Our results showed that the polymer-hybrid solar cell was completely efficient with a high η in comparison with similar ones reported in literature, and also had less fabrication costs using green synthesis conditions with a simple structure and displayed resistance to oxidation with high stability.
关键词： conductive polymers,Fe3O4 nanoparticles,Solar cell,photovoltaics,core-shell nanocomposite
更新于2025-09-16 10:30:52
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Conductive polymer nanoantennas for dynamic organic plasmonics
摘要： Being able to dynamically shape light at the nanoscale is one of the ultimate goals in nano-optics. Resonant light–matter interaction can be achieved using conventional plasmonics based on metal nanostructures, but their tunability is highly limited due to a fixed permittivity. Materials with switchable states and methods for dynamic control of light–matter interaction at the nanoscale are therefore desired. Here we show that nanodisks of a conductive polymer can support localized surface plasmon resonances in the near-infrared and function as dynamic nano-optical antennas, with their resonance behaviour tunable by chemical redox reactions. These plasmons originate from the mobile polaronic charge carriers of a poly(3,4-ethylenedioxythiophene:sulfate) (PEDOT:Sulf) polymer network. We demonstrate complete and reversible switching of the optical response of the nanoantennas by chemical tuning of their redox state, which modulates the material permittivity between plasmonic and dielectric regimes via non-volatile changes in the mobile charge carrier density. Further research may study different conductive polymers and nanostructures and explore their use in various applications, such as dynamic meta-optics and reflective displays.
关键词： plasmonics,nano-optics,conductive polymers,nanoantennas,dynamic control
更新于2025-09-12 10:27:22
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Plastics Get Flexible for Electronics
摘要： Integrated circuitry, “wraparound” electronics, and other conductive applications are being made possible using plastics. Whether plastics are in electronics—or even are the electronics—in consumer and industrial applications, novel conductive polymers and processing methods are helping 21st-century plastics engineers realize new performance and aesthetics benchmarks. In particular, the skyrocketing popularity of portable, personal, or more visually pleasing electronics is driving industry innovation across the board—from flexible electronics used in wearable, automotive, or appliance displays, to high-impact plastics for protecting sensitive electronics on the go. Conductive inks for in-mold use and polymers modified with conductive metal nanoparticles are also spurring searches for commercial uses of novel materials.
关键词： conductive polymers,flexible electronics,automotive displays,plastics,wearable electronics,in-mold electronic inks
更新于2025-09-10 09:29:36
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Electrical Conductivity Modulation of Crosslinked Composite Nanofibers Based on PEO and PEDOT:PSS
摘要： The aim of this work is to investigate the development of nano?ber mats, based on intrinsically conductive polymers (ICPs), which show simultaneously a high electrical conductivity and mandatory insoluble water properties. In particular, the nano?bers, thanks to their properties such as high surface area, porosity, and their ability to o?er a preferential pathway for electron ?ow, play a crucial role to improve the essential characteristics ensured by ICPs. The nano?ber mats are obtained by electrospinning process, starting from a polymeric solution made of polyethylene oxide (PEO) and poly(styrene sulfonate) (PEDOT:PSS). PEO is selected not only as a dopant to increase the electrical/ionic conductivity, as deeply reported in the literature, but also to ensure the proper stability of the polymeric jet, to collect a dried nano?ber mat. Moreover, in the present work, two di?erent treatments are proposed in order to induce crosslinking between PEO chains and PEDOT:PSS, made insoluble into water which is the ?nal sample. The ?rst process is based on a heating treatment, conducted at 130°C under nitrogen atmosphere for 6 h, named the annealing treatment. The second treatment is provided by UV irradiation that is e?ective to induce a ?nal crosslinking, when a photoinitiator, such as benzophenone, is added. Furthermore, we demonstrate that both crosslinking treatments can be used to verify the preservation of nanostructures and their good electrical conductivity after water treatment (i.e., water resistance). In particular, we con?rm that the crosslinking method with UV irradiation results to being more e?ective than the standard annealing treatment. Indeed, we demonstrate that the processing time, required to obtain the ?nal crosslinked nano?ber mats with a high electrical conductance, results to being smaller than the one needed during the heating treatment.
关键词： PEO,PEDOT:PSS,intrinsically conductive polymers,electrical conductivity,nano?ber mats,water resistance,electrospinning,crosslinking
更新于2025-09-09 09:28:46
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Desenvolvimento de filmes poliméricos ultrafinos e reticulados para aplica??es em sensores
摘要： A new method for producing stable films used in sensors is proposed, based on the layer-by-layer deposition of poly(o-ethoxyaniline) and phenol-formaldehyde (POEA/PF) followed by a thermal treatment to promote film crosslinking. The crosslinking process was characterized by Fourier transform infrared and ultraviolet-visible spectroscopic analyses, atomic force microscopy and desorption studies. Sensor analyses were also carried out in order to evaluate cross-linked sensor signal. Results showed that PF resin served as a curing agent, forming a semi-interpenetrating polymer network therefore producing stable films. Although there was a decrease in the sensitivity of sensors with crosslinking, such films are quite stable and can be potentially used in sensors, especially where higher stability is required.
关键词： ultrathin films,conductive polymers,sensors
更新于2025-09-04 15:30:14