Synthesis and optical studies of KCaVO4:Sm3+/PMMA nanocomposites

Khursheed, Sumara; Biswas, Pankaj; Singh, Vivek K.; Kumar, Vinay; Swart, H.C.; Sharma, J. M.

doi:10.1016/j.vacuum.2018.10.069

Cited by 34 publications

(6 citation statements)

References 34 publications

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“…4,37 Indeed, the presence of this band indicates that moisture is present. 40 The trans-CH wagging mode is assigned to the band at 963 cm À136 and the band intensity decreased with loading. The three observed bands at 1061, 1146, and 1246 cm À1 are ascribed to the C O C group's stretching vibration, 4,37 C O group 37 (where with loading it disappeared), and CH rocking mode 4,36 respectively.…”

Section: Fourier-transform Infrared Spectroscopy Of Pnc Filmsmentioning

confidence: 99%

Enhancing the microstructural, optical, and tensile properties of the PVC‐PMMA blend film: The role of PbO nanoparticles incorporation

El‐Gamal

Khaled

Mohammed

2023

J of Applied Polymer Sci

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PVC‐PMMA and PVC‐PMMA‐PbO PNC films were prepared. HR‐TEM confirmed the nanoparticle structure of PbO, while XRD assured its purity, tetragonal structure, with crystallites measuring 35.71 nm. SEM showed the blend surface appeared smooth and homogenous with a fingerprint shape, and loading increased the surface roughness. PbO was reported to be evenly distributed across the blend surface. FTIR confirmed that all blend functional groups are present and the formation of hydrogen bonds between PVC and PMMA, besides the strong interactions between PbO and blend chains. Different optical constants were investigated using UV–vis‐IR spectroscopy. The transmittance of the blend was 81.99% and decreased to 48.14% after loading 4 wt.% PbO (at 500 nm). Loading causes an increase in absorption. The extinction coefficient shows low extinction coefficients (k < 10−6). Loading PbO narrowed the blend band gaps and increased the refractive index n. The carrier's concentration to the electron effective mass was reported. Optical conductivity, energy loss functions, and nonlinear optical parameters were also studied. Tensile properties revealed that loading increased Young's modulus, tensile strength, and elongation at break. The enhancements in optical and mechanical characteristics of PNC films illustrate the possibility of extending their applications to include the semiconductor, electronics, and optics industries.

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Section: Fourier-transform Infrared Spectroscopy Of Pnc Filmsmentioning

confidence: 99%

Enhancing the microstructural, optical, and tensile properties of the PVC‐PMMA blend film: The role of PbO nanoparticles incorporation

El‐Gamal

Khaled

Mohammed

2023

J of Applied Polymer Sci

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“…It is also reported that encapsulating LNPs into polymeric matrices leads to various favorable properties such as enhanced flexibility, improved photostability, lower tendency to aggregate, etc. Therefore, encapsulation of LNPs in polymers could increase commercial applications [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

“…The polymer should be thermally/chemically stable, not absorb visible light, have high optical transparency, possess optimum refractive index, etc. [26]. Polyvinylidenefluoride (PVDF, C 2 H 2 F 2 ) is a semi-crystalline polymer that presents several advantages such as ease of synthesis, optimum mechanical strength, excellent thermal and chemical stability, etc.…”

Section: Introductionmentioning

confidence: 99%

Luminescent PVDF nanocomposite films and fibers encapsulated with La2Hf2O7:Eu3+ nanoparticles

et al. 2020

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Luminescent films and fibers are in high demand in display devices and optoelectronics owing to their higher flexibility and mechanical strength compared to powder samples. Keeping that in mind, we have encapsulated La 2 Hf 2 O 7 :Eu 3+ (LHOE) nanoparticles (NPs) synthesized by a molten salt method into polyvinylidene fluoride (PVDF) films and fibers. The LHOE-PVDF nanocomposite fibers were manufactured using a Forcespinning® technology while the counterpart films were fabricated by a drop-casting technique. Their photophysical properties were analyzed and compared. Specifically, the red emission with optimum lifetime, color coordinates, and branching ratio of the LHOE NPs can be reproduced even when incorporated inside the PVDF films and fibers. Our studies demonstrate that the LHOE-PVDF films have better emission output, excited-state lifetime, quantum yield, and color purity than the fibers. This is attributed to lower defect density and better surface texture of the LHOE-PVDF films compared to the fibers. Based on the Judd-Ofelt analysis, we have also elucidated that the Eu-O bond is more polarizable and has a higher degree of covalency in the LHOE-PVDF films compared to that in the fibers. The trend of the Judd-Ofelt parameters suggested that Eu 3+ has a more asymmetric environment in the films compared to the fibers which impart higher red color purity to the former.

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“…The reported results indicated that the PMMA can be used to enhance the fluorescence intensity of the composites of lanthanide complexes 17) . Thus, mixing the polymers with lanthanides in the formation of materials or composite can enhance the optical properties 18) . The role of the PMMA polymer in composites is to enhance the luminescence via preventing quenching process 11,13,[17][18][19] .…”

Section: Introductionmentioning

confidence: 99%

“…Thus, mixing the polymers with lanthanides in the formation of materials or composite can enhance the optical properties 18) . The role of the PMMA polymer in composites is to enhance the luminescence via preventing quenching process 11,13,[17][18][19] . PMMA also can increase the electrical conductivity, photoconductivity, photo-induced charge transfer, photoluminescent, mechanical and magnetic properties of the composites 20) .…”

Section: Introductionmentioning

confidence: 99%

Fluorescence Enhancement of Samarium Picrate Tetraethylene Glycol Micro-sized Complex Doped in Poly (methyl methacrylate)

Kusrini¹,

Hidayati

Mamat

et al. 2020

Evergreen

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Micro-sized complex of [Sm(Pic)2(H2O)(EO4)](Pic).H2O (where EO4 = tetraethylene glycol, Pic = picrate anion) and its micro-sized polymethyl methacrylate (PMMA) composite have been synthesized by one step (in-situ method) and three steps (reprecipitation-evaporation) methods. Fluorescence intensity of ion Sm 3+ ion in the Sm-Pic-EO4/PMMA micro-sized composite is higher than that in the Sm-Pic-EO4 micro-sized complex. The composite is potential to be applied as a luminescent center in organic light emitting devices for bright-orange emission coming from Sm 3+ ions. This micro-sized rare earth metal and its composite can be used for engineering application.

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Synthesis and optical studies of KCaVO4:Sm3+/PMMA nanocomposites

Cited by 34 publications

References 34 publications

Enhancing the microstructural, optical, and tensile properties of the PVC‐PMMA blend film: The role of PbO nanoparticles incorporation

Enhancing the microstructural, optical, and tensile properties of the PVC‐PMMA blend film: The role of PbO nanoparticles incorporation

Luminescent PVDF nanocomposite films and fibers encapsulated with La2Hf2O7:Eu3+ nanoparticles

Fluorescence Enhancement of Samarium Picrate Tetraethylene Glycol Micro-sized Complex Doped in Poly (methyl methacrylate)

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