Conductivity improvement of magnetite and hematite nanoparticles via admicellar polymerization of polypyrrole

Kongsat, Pantharee; O’Rear, Edgar A.; Pongprayoon, Thirawudh

doi:10.1016/j.jiec.2022.06.031

Cited by 5 publications

(2 citation statements)

References 41 publications

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“…The conductive property of the nerve conduit facilitates the transmission of electrical signals, which is essential for nerve repair . Before the conductivity and photocurrent testing, the copper foil was pasted on both sides of the nerve conduit to reduce the influence of contact impedance. , The light-emitting diode (LED) lighting test experiment (Figure b) demonstrated that the Bi 2 S 3 /Ti 3 C 2 T x -PLLA conduit is conductive. The conductivity of conduits incorporated with various Bi 2 S 3 and Bi 2 S 3 /Ti 3 C 2 T x concentrations is shown in Figure c.…”

Section: Resultsmentioning

confidence: 99%

“…53 Before the conductivity and photocurrent testing, the copper foil was pasted on both sides of the nerve conduit to reduce the influence of contact impedance. 54,55 The lightemitting diode (LED) lighting test experiment (Figure 5b) demonstrated that the Bi 2 S 3 /Ti 3 C 2 T x -PLLA conduit is conductive. The conductivity of conduits incorporated with 56 Furthermore, an appropriate mechanical strength of the Bi 2 S 3 /Ti 3 C 2 T x -PLLA conduit (Figure S3) provides mechanical support for peripheral nerve repair.…”

Section: Photoelectric Property Of Conduitsmentioning

confidence: 99%

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Photoelectric Bi₂S₃ Nanoparticle/Ti₃C₂T_x Nanosheet Heterojunction for Promotion of Nerve Cell Growth

Chen

et al. 2023

ACS Appl. Nano Mater.

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Bismuth sulfide (Bi2S3) enabled us to transform light signals into electrical signals via the photoelectric effect, which exhibited tremendous prospects on constructing wireless electrical stimulation for accelerating nerve regeneration. However, too rapid recombination of photogenerated electron–hole pairs weakened its photocurrent. Herein, the Bi2S3/Ti3C2T x heterojunction was synthesized by in situ growth of Bi2S3 nanoparticles on Ti3C2T x nanosheets and then mixed with poly-l-lactic acid (PLLA) powder to fabricate the Bi2S3/Ti3C2T x -PLLA conduit. At the heterojunction interfaces, Ti3C2T x with a more positive Fermi energy level could form interfacial potential difference with Bi2S3 to promote electron–hole pair separation. Meanwhile, Ti3C2T x with excellent conductivity could provide channels for photogenerated electron transmission, thus facilitating the generation of the photocurrent. Photoluminescence and electrochemical impedance spectroscopy analysis indicated that electron–hole pair separation and electron transfer were enhanced. As a consequence, under near-infrared light radiation, the output photocurrent of Bi2S3/Ti3C2T x -PLLA was increased from 0.48 to 1.43 μA compared to that of Bi2S3-PLLA. The enhanced photocurrent effectively promoted the differentiation of rat pheochromocytoma (PC12) into functional neurons by upregulating extracellular Ca2+ influx. Therefore, the above results demonstrated that this work provided a new perspective for wireless electrical stimulated nerve regeneration.

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Section: Resultsmentioning

confidence: 99%

Section: Photoelectric Property Of Conduitsmentioning

confidence: 99%

Photoelectric Bi₂S₃ Nanoparticle/Ti₃C₂T_x Nanosheet Heterojunction for Promotion of Nerve Cell Growth

Chen

et al. 2023

ACS Appl. Nano Mater.

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Electroactive Polymers for On‐Demand Drug Release

Alkahtani,

Elbadawi,

Chapman

et al. 2023

Adv Healthcare Materials

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Conductive materials have played a significant role in advancing society into the digital era. Such materials are able to harness the power of electricity and are used to control many aspects of our daily lives. Conductive polymers (CPs) are an emerging group of polymers that possess metal‐like conductivity yet retain desirable polymeric features, such as processability, mechanical properties and biodegradability. Upon receiving an electrical stimulus, CPs can be tailored to achieve a number of responses, such as harvesting energy, biosensing and stimulating tissue growth. The recent FDA approval of a CP‐based material for a medical device has invigorated their research in healthcare, including as biosensors, tissue engineering grafts and implants. In drug delivery, CPs can act as electrical switches, drug release is achieved at a flick of a switch, thereby providing unprecedented control over drug release. In this review, recent developments in CP as electro‐active polymers for voltage‐stimuli responsive drug delivery systems are evaluated. The review demonstrates the distinct drug release profiles achieved by electro‐active formulations, and both the precision and ease of stimuli response. This level of dynamism promises to yield “smart medicines” and warrants further research. The review concludes by providing an outlook to electro‐active formulations in drug delivery and highlighting their integral roles in healthcare IoT.This article is protected by copyright. All rights reserved

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Degradation of polyvinylpyrrolidone-coated iron oxide nanoparticles through ozonation: Steric to electrosteric repulsion and electrostatic interactions

Amiri,

Behin,

Ghanbariebad

2023

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Conductivity improvement of magnetite and hematite nanoparticles via admicellar polymerization of polypyrrole

Cited by 5 publications

References 41 publications

Photoelectric Bi₂S₃ Nanoparticle/Ti₃C₂T_x Nanosheet Heterojunction for Promotion of Nerve Cell Growth

Photoelectric Bi₂S₃ Nanoparticle/Ti₃C₂T_x Nanosheet Heterojunction for Promotion of Nerve Cell Growth

Electroactive Polymers for On‐Demand Drug Release

Degradation of polyvinylpyrrolidone-coated iron oxide nanoparticles through ozonation: Steric to electrosteric repulsion and electrostatic interactions

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Conductivity improvement of magnetite and hematite nanoparticles via admicellar polymerization of polypyrrole

Cited by 5 publications

References 41 publications

Photoelectric Bi2S3 Nanoparticle/Ti3C2Tx Nanosheet Heterojunction for Promotion of Nerve Cell Growth

Photoelectric Bi2S3 Nanoparticle/Ti3C2Tx Nanosheet Heterojunction for Promotion of Nerve Cell Growth

Electroactive Polymers for On‐Demand Drug Release

Degradation of polyvinylpyrrolidone-coated iron oxide nanoparticles through ozonation: Steric to electrosteric repulsion and electrostatic interactions

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Product

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Photoelectric Bi₂S₃ Nanoparticle/Ti₃C₂T_x Nanosheet Heterojunction for Promotion of Nerve Cell Growth

Photoelectric Bi₂S₃ Nanoparticle/Ti₃C₂T_x Nanosheet Heterojunction for Promotion of Nerve Cell Growth