Electrochemical in situ synthesis of polypyrrole nanowires

Ramírez, Andrés M. R.; Gacitúa, Manuel; Ortega, Eduardo; Díaz, F. R.; Valle, M. A. del

doi:10.1016/j.elecom.2019.04.007

Cited by 39 publications

(32 citation statements)

References 40 publications

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“…As pointed out for PANI, the growth of polymeric nanowires through the pores can be controlled by the experimental conditions (notably by tuning the electrodeposition parameters, in either potentiostatic or galvanostatic mode), and the resulting nanofilaments isolated from each other (thanks to the mesoporous silica template) exhibit considerably improved electrochemical reversibility (faster switching between doped and undoped states) in comparison to bulk PANI [168]. From charge–discharge measurements, it also appears that the high surface areas developed by the conducting polymer nanowires enable to reach extremely large capacitance values, by several orders of magnitude as compared to PANI or PPy films deposited in the absence of template [168,173]. To date, such nanocomposite films made of conducting polymers confined in oriented mesoporous silica films have been essentially applied for electrocatalysis and electroanalysis purposes [174,175,176], but they are also promising in the field of energy [168,173] as briefly mentioned above in the supercapacitors section.…”

Section: Redox-active Silica-based Organic-inorganic Hybridsmentioning

confidence: 99%

“…From charge–discharge measurements, it also appears that the high surface areas developed by the conducting polymer nanowires enable to reach extremely large capacitance values, by several orders of magnitude as compared to PANI or PPy films deposited in the absence of template [168,173]. To date, such nanocomposite films made of conducting polymers confined in oriented mesoporous silica films have been essentially applied for electrocatalysis and electroanalysis purposes [174,175,176], but they are also promising in the field of energy [168,173] as briefly mentioned above in the supercapacitors section.…”

Section: Redox-active Silica-based Organic-inorganic Hybridsmentioning

confidence: 99%

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Mesoporous Silica-Based Materials for Electronics-Oriented Applications

et al. 2019

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Electronics, and nanoelectronics in particular, represent one of the most promising branches of technology. The search for novel and more efficient materials seems to be natural here. Thus far, silicon-based devices have been monopolizing this domain. Indeed, it is justified since it allows for significant miniaturization of electronic elements by their densification in integrated circuits. Nevertheless, silicon has some restrictions. Since this material is applied in the bulk form, the miniaturization limit seems to be already reached. Moreover, smaller silicon-based elements (mainly processors) need much more energy and generate significantly more heat than their larger counterparts. In our opinion, the future belongs to nanostructured materials where a proper structure is obtained by means of bottom-up nanotechnology. A great example of a material utilizing nanostructuring is mesoporous silica, which, due to its outstanding properties, can find numerous applications in electronic devices. This focused review is devoted to the application of porous silica-based materials in electronics. We guide the reader through the development and most crucial findings of porous silica from its first synthesis in 1992 to the present. The article describes constant struggle of researchers to find better solutions to supercapacitors, lower the k value or redox-active hybrids while maintaining robust mechanical properties. Finally, the last section refers to ultra-modern applications of silica such as molecular artificial neural networks or super-dense magnetic memory storage.

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Section: Redox-active Silica-based Organic-inorganic Hybridsmentioning

confidence: 99%

Section: Redox-active Silica-based Organic-inorganic Hybridsmentioning

confidence: 99%

Mesoporous Silica-Based Materials for Electronics-Oriented Applications

et al. 2019

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“…CPs have proven their potential usefulness in energy-harvesting devices, and could be enhanced by a higher control of their morphology. A method using solely electrochemical perturbations has been developed ([ 18 , 19 , 20 , 21 , 22 ]; 10.1007/s11581-016-1796-9) as a solution for controlling the deposition process and electrode morphology, suitable for the reproducible construction of nanostructured semiconducting polymer layers.…”

Section: Introductionmentioning

confidence: 99%

Nanostructured TiO2 and PEDOT Electrodes with Photovoltaic Application

et al. 2021

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In this work, nanostructured TiO2 and poly-3,4-ethylenedioxythiophene (PEDOT) layers were electrochemically prepared over transparent electrodes. Morphological characterization evidenced the presence of nanostructures as planed with 50-nm-wide TiO2 rod formations followed by 30-nm-wide PEDOT wires. Different characterizations were made to the deposits, establishing their composition and optic properties of the deposits. Finally, photovoltaic cells were prepared using this modified electrode, proving that the presence of PEDOT nanowires in the cell achieves almost double the efficiency of its bulk analogue.

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“…Time to time functionalization of conducting polymers is perhaps more challenging compared to the synthesis of the parent molecules [7,13]. There are various available routes for conducting polymer synthesis such as chemical [14][15][16][17], electrochemical [18][19][20][21], photochemical [22,23], metathesis [24,25], emulsion [26][27][28], plasma [29,30] etc. While synthesis of the polymer is the important first step, frequently the resultant polymer lacks in desired properties at the desired levels.…”

Section: Introductionmentioning

confidence: 99%

Conducting Polymer Grafting: Recent and Key Developments

Maity

Dawn

2020

Polymers

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Since the discovery of conductive polyacetylene, conductive electroactive polymers are at the focal point of technology generation and biocommunication materials. The reasons why this research never stops growing, are twofold: first, the demands from the advanced technology towards more sophistication, precision, durability, processability and cost-effectiveness; and second, the shaping of conducting polymer research in accordance with the above demand. One of the major challenges in conducting polymer research is addressing the processability issue without sacrificing the electroactive properties. Therefore, new synthetic designs and use of post-modification techniques become crucial than ever. This quest is not only advancing the field but also giving birth of new hybrid materials integrating merits of multiple functional motifs. The present review article is an attempt to discuss the recent progress in conducting polymer grafting, which is not entirely new, but relatively lesser developed area for this class of polymers to fine-tune their physicochemical properties. Apart from conventional covalent grafting techniques, non-covalent approach, which is relatively new but has worth creation potential, will also be discussed. The aim is to bring together novel molecular designs and strategies to stimulate the existing conducting polymer synthesis methodologies in order to enrich its fascinating chemistry dedicated toward real-life applications.

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Electrochemical in situ synthesis of polypyrrole nanowires

Cited by 39 publications

References 40 publications

Mesoporous Silica-Based Materials for Electronics-Oriented Applications

Mesoporous Silica-Based Materials for Electronics-Oriented Applications

Nanostructured TiO2 and PEDOT Electrodes with Photovoltaic Application

Conducting Polymer Grafting: Recent and Key Developments

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