In Situ Photochemically assisted Synthesis of Silver Nanoparticles in Polymer Matrixes

Balan, Lavinia; Malval, Jean‐Pierre; Lougnot, Daniel Joseph

doi:10.5772/8504

Cited by 9 publications

(7 citation statements)

References 36 publications

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“…42−45 However, the LSPR band overlaps with the π−π* band transition of PT. 46,47 Simultaneously, we observe the bands of the polaronic (750 nm) and bipolaronic states (1400 nm) due to the partial oxidation of the PT by Ag(I), which leads to an increase in the doping level. 48,49 These three bands increase progressively with the reaction time as the 3T polymerization occurs, reaching a maximum absorbance after 60 s. The maximum electrical conductivity is also achieved after 60 s. Once this reaction time is exceeded, the polaronic and bipolaronic bands decrease, confirming the PT's overoxidation.…”

Section: ■ Results and Discussionmentioning

confidence: 76%

In Situ Synthesis of Polythiophene and Silver Nanoparticles within a PMMA Matrix: A Nanocomposite Approach to Thermoelectrics

Serrano-Claumarchirant

Silva

Sánchez-Royo

et al. 2022

ACS Appl. Energy Mater.

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The processability of organic thermoelectric materials plays a crucial role due to their clear advantages of applicability in large-scale areas compared to traditional inorganic counterparts. A promising way to process thermoelectric materials based on conductive polymers is through in situ polymerization in an insulating polymer matrix. This work shows an interpenetrating polymeric network based on polythiophene, silver nanoparticles (Ag NPs), and poly(methyl methacrylate) (PMMA) produced by the oxidative polymerization of terthiophene by an oxidizing silver salt in a PMMA matrix. Ag NPs are in situ synthesized simultaneously as a byproduct. The reaction occurs very fast in the solid state, and after only 1 min, a homogeneous interpenetrating polymer network (IPN) film is obtained, reaching electrical conductivity values of 120 S cm −1 . Ag NPs play a determining role in the conducting properties of the IPN. Moreover, the thermoelectric properties were evaluated as a function of the synthesis parameters, reaching a maximum power factor of 51 μW m −1 K −2 . This study shows a promising method to enhance the processability of hybrid thermoelectric materials on the basis of conductive polymers and nanofillers.

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Section: ■ Results and Discussionmentioning

confidence: 76%

In Situ Synthesis of Polythiophene and Silver Nanoparticles within a PMMA Matrix: A Nanocomposite Approach to Thermoelectrics

Serrano-Claumarchirant

Silva

Sánchez-Royo

et al. 2022

ACS Appl. Energy Mater.

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“…As regards silver nanocomposite materials, a one-step photo-induced approach was applied [25][26][27][28]. Silver nitrate (0.2 or 0.4 wt.%), photoinitiator (0.5 wt.%) and the two acrylate monomers (80:20 PEGDA:PETIA) were stirred under magnetic stirring for one hour at room temperature.…”

Section: Methodsmentioning

confidence: 99%

Influence of in situ photo-induced silver nanoparticles on the ageing of acrylate materials

Zouari

Dabert

Asia

et al. 2021

Journal of Photochemistry and Photobiology A: Chemistry

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The present work aims to investigate the impact of a low amount of photo-induced silver nanoparticles (0.2 and 0.4 wt.% of Ag NPs) on the stability of acrylate materials (carriers of ester and ether groups) under the combined effect of oxygen and light. Different techniques were implemented to monitor the structural changes at different scales. The determination of the influence of AgNPs required a preliminary investigation of the pure acrylate polymer under the same experimental conditions. The polymer underwent a post-polymerization of the residual vinyl groups and a photo-oxidative degradation. This degradation induced chemical modifications evidenced by infrared spectroscopy and architectural changes resulting from chain scission reactions. These reactions were not only responsible for the steaming of volatile organic compounds, detected by HS-SPME/GC-MS but also for the increase in mesh size controlled by thermoporosimetry. As regards the polymer/Ag NPs composite, the higher the amount of filler dispersed in the matrix, the greater the rate of degradation. This behaviour was due to the photocatalytic effect of Ag NPs, regardless of the loading in nanoparticles. As a result of irradiation, the nanoparticles migrate to the surface of the film and coalesce, thus inducing an increase in size distribution and a gradient structuring as revealed by TEM analysis. The outcomes of this investigation are important for the development of new composite material with new functionalities (antibacterial, optical, conductive properties) for industrial applications as in textile industry.

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“…In this type of approach, the metal salt reduction and the nanoparticle formation can be triggered by several means such as chemical treatment [29][30][31] , annealing of the films [31][32][33][34] or UV irradiation [35][36][37] . So far, this approach has proven its efficiency for producing homogeneous gold 32,35 and silver 29,38,39 nanocomposite films with high filling fractions, but a systematic control of the nanoparticle size and shape is still challenging. Porel et al have studied the annealing route and have shown that varying simultaneously the metal/polymer ratio and the annealing temperature permits to selectively synthesize different types of polygonal nanoplates 32 .…”

Section: Introductionmentioning

confidence: 99%

In situ synthesis of gold nanoparticles in polymer films under concentrated sunlight: control of nanoparticle size and shape with solar flux

et al. 2020

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In Situ Photochemically assisted Synthesis of Silver Nanoparticles in Polymer Matrixes

Cited by 9 publications

References 36 publications

In Situ Synthesis of Polythiophene and Silver Nanoparticles within a PMMA Matrix: A Nanocomposite Approach to Thermoelectrics

In Situ Synthesis of Polythiophene and Silver Nanoparticles within a PMMA Matrix: A Nanocomposite Approach to Thermoelectrics

Influence of in situ photo-induced silver nanoparticles on the ageing of acrylate materials

In situ synthesis of gold nanoparticles in polymer films under concentrated sunlight: control of nanoparticle size and shape with solar flux

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