Effect of PPy concentration on the photoluminescence of PPy–PMMA blends: observation of acceptor concentration-dependent FRET

Dey, Smita; Kar, Asit Kumar

doi:10.1007/s10854-021-07092-x

Cited by 5 publications

(6 citation statements)

References 30 publications

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“…Additionally, the band at 1122 cm −1 due to C‐C stretching vibrations, 43 and the band at 1333 represents CH 2 twisting 43 . Furthermore, the band at 1450 cm −1 corresponds to O‐CH 3 bending, and the band at 1595 cm −1 is due to the stretching vibrational mode of C=C 46 . Moreover, the band at 1733 cm −1 refers to C=O symmetric vibration, 43 and the band at 2951 cm −1 is assigned to α–CH 3 asymmetric vibrations 43 .…”

Section: Resultsmentioning

confidence: 99%

“…Figure 4b stretching vibrations, 42 while the band at 814 cm À1 results from C-O-C symmetric vibrations. 43 The band at 892 cm À1 is associated with CH 2 stretching vibrations, [44][45][46] and the band at 995 cm À1 corresponds to O-C rocking. 43 Additionally, the band at 1122 cm À1 due to C-C stretching vibrations, 43 and the band at 1333 represents CH 2 twisting.…”

Section: Resultsmentioning

confidence: 99%

“…43 Furthermore, the band at 1450 cm À1 corresponds to O-CH 3 bending, and the band at 1595 cm À1 is due to the stretching vibrational mode of C=C. 46 Moreover, the band at 1733 cm À1 refers to C=O symmetric vibration, 43 and the band at 2951 cm À1 is assigned to α-CH 3 asymmetric vibrations. 43 The band at 2994 cm À1 is due to asymmetric vibrations.…”

Section: Resultsmentioning

confidence: 99%

“…The emission spectra at 485 nm and 543 nm Figure 9d correspond to the absorption peaks of PMMA at 300 nm and 340 nm Figure 8a, in agreement with the literature. 75,76 On the other hand, the films containing SV did not exhibit any emission peaks, as they have indirect band gap. Gfroerer et al reported that ordinary photoluminescence is not suitable for studying materials with low radiative efficiency, such as indirect bandgap semiconductors.…”

Section: Optical Propertiesmentioning

confidence: 93%

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Optimized poly(methyl methacrylate)/mixed‐phase silver vanadate nanocomposites with tuned optical properties and hydrophobicity

Yousef,

Ali,

Allam

2024

J of Applied Polymer Sci

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The fast advancements in technology have generated significant interest in optoelectronic materials. Nevertheless, the difficulty of creating affordable materials with exceptional optical characteristics is an ongoing challenge. Therefore, the objective of this work was to tune the optical properties of poly(methyl methacrylate) (PMMA) by embedding silver vanadate (SV) in the polymer matrix. Moreover, the wettability test of the fabricated composite membranes showed a hydrophobic behavior, with the PMMA film containing 0.6 wt.% SV showed a contact angle of 86.75 ± 0.7°. Furthermore, SV showed high thermal stability with a maximum weight loss of 0.74% at 830°C, which is very high thermal stability at high temperatures. In addition, the 0.6 wt.% SV@PMMA film exhibited a maximum weight loss of 96.7% at 785°C. Moreover, the 0.6 wt.% SV@PMMA film showed the lowest indirect band gap energy (2.02 eV) compared to the other films and pure SV NPs. The findings demonstrate the potential of the synthesized films for optoelectronic applications.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Optical Propertiesmentioning

confidence: 93%

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Optimized poly(methyl methacrylate)/mixed‐phase silver vanadate nanocomposites with tuned optical properties and hydrophobicity

Yousef,

Ali,

Allam

2024

J of Applied Polymer Sci

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“…Conductive polymers have become the research hotspots recently since these materials find great potential in organic solar cells, , electromagnetic shielding, , supercapacitors, , and photoluminescence . The commonly used conductive polymers include polyacetylene, polythiophene, polyaniline, polypyrrole (PPy), etc.…”

Section: Introductionmentioning

confidence: 99%

Robust Polypyrrole@Halloysite Nanotube-Coated Polyurethane Sponge as Multifunctional Flexible Sensors

Liu

Lin

Zhao

et al. 2023

ACS Sustainable Chem. Eng.

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Polyurethane (PU) sponge with high elasticity and reproducibility shows promising application in flexible electronic devices. However, the poor conductivity and high flammability limit its application field, which also pose a potential threat to human health. Here, a flexible sponge sensor based on PU and polypyrrole-wrapped halloysite nanotubes (PPy@HNTs) was successfully fabricated by the dip coating technology. The PPy-modified HNTs showed strong binding ability on the PU sponge by employing N,N-dimethylformamide (DMF) as an interfacial solvent. PPy@HNTs can well adhere on the surface of the PU sponge, which endow excellent structural stability to the flexible sponge sensor after 5000 cycles. The response and recovery times during the sensitivity experiment of the flexible sponge sensor are 265.63 and 265.62 ms, respectively. The flexible sponge sensor can effectively detect various physical activities, such as walking, facial expression, and gesture. It can be used as an analytical balance for quality monitoring. Moreover, the flexible sponge sensor exhibits excellent photothermal performance, which is reflected in the good relationship between resistance change and laser irradiation time as well as power intensity. The coating of PPy@HNTs also significantly improved the flame retardancy of the PU sponge. This work developed a mild, high-efficiency, and simple preparation method of flexible sponge sensors, and the prepared sensor displayed multifunctional applications such as biological detection and electronic balances.

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The effect of low concentrations of polypyrrole on the structural, thermal, and dielectric characteristics of CMC/PPy blends

Salem

Mohamed

Yassin

2023

J Mater Sci: Mater Electron

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The current work aims to synthesize carboxymethyl cellulose/polypyrrole (CMC/PPy) blends with different PPy concentrations as promising blends for energy storage devices with low cost and excellent chemical and physical characteristics. The structural and dielectric characteristics of CMC/PPy blends were studied. FT-IR spectroscopy is utilized to study the structural properties of the present blends, whereas the dielectric properties are explored at frequency range of 0.1 Hz−20 MHz. The structural study of CMC/PPy blends showed good homogeneity between the CMC matrix and PPy as a conductive filler. The thermal behavior of the present blends was also investigated using DSC, where the thermal stability of the blends was improved after incorporating PPy into the host matrix. The dielectric characteristics results indicated a rise in the dielectric parameters of CMC with an increase in the PPy content up to 8 wt%. The dielectric parameters of CMC/PPy blends are frequency dependents. The dielectric constant (ε′) and AC electrical conductivity of the blends under study enhanced by about 33% with a rise in the PPy content to 8 wt%. The dielectric loss (ε″) values decreased from 3.4938 to 0.93071 at 10 kHz; this performance means that the CMC/PPy blends have an excellent possibility for energy storage devices with low dielectric loss in various applications, such as sensors, batteries, and capacitors.

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Effect of PPy concentration on the photoluminescence of PPy–PMMA blends: observation of acceptor concentration-dependent FRET

Cited by 5 publications

References 30 publications

Optimized poly(methyl methacrylate)/mixed‐phase silver vanadate nanocomposites with tuned optical properties and hydrophobicity

Optimized poly(methyl methacrylate)/mixed‐phase silver vanadate nanocomposites with tuned optical properties and hydrophobicity

Robust Polypyrrole@Halloysite Nanotube-Coated Polyurethane Sponge as Multifunctional Flexible Sensors

The effect of low concentrations of polypyrrole on the structural, thermal, and dielectric characteristics of CMC/PPy blends

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