Synthesis and characterization of semiconducting copper oxide nanoparticles and their impact on the physical properties of a nematic liquid crystalline material 4-pentyl-4′-cyanobiphenyl

Jaiswal, Mayank; Srivastava, Geetanjali; Mishra, Sonam; Singh, Praveen Kumar; Dhar, Ravindra; Dąbrowski, R.

doi:10.1016/j.molliq.2023.122032

Cited by 21 publications

(6 citation statements)

References 72 publications

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“…Δε′ decreases for composite 1 and then increases for composite 2. GNRs lying in the local electric field of LC molecules form electric dipoles due to the induced charges , as shown in Figure . These induced charges (and hence dipoles) have an electric field opposite to the main electric field of the LC molecules.…”

Section: Resultsmentioning

confidence: 99%

“…Extraction of the correct frequency response of permittivity and loss after the removal of the low- and high-frequency parasitic effects , are shown in Figures and .…”

Section: Resultsmentioning

confidence: 99%

“…Experimental frequency response of permittivity and loss for Pure 6CHBT and composites 1 and 2 are shown in Figure 9 for the homeotropic cells. Extraction of the correct frequency response of permittivity and loss after the removal of the low-and high-frequency parasitic effects 45,46 are shown in Figures 10 and 11.…”

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confidence: 99%

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Gold Nanorod-Induced Effects in a Mesogenic Compound 4-(trans-4-n-Hexylcyclohexyl) isothiocyanatobenzene

Lal,

Verma,

Chirra

et al. 2023

ACS Omega

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Gold nanorods (GNRs) have a capsule-like structure with different optical properties than spherical gold nanoparticles due to surface plasmon resonance. Liquid crystals (LCs) are mesogenic compounds having crystal-like orientation and liquid-like fluidity. They are important materials from a technological point of view. Both GNRs and LC compounds are anisotropic in shape and properties. Different nano entities show interesting results when dispersed in different liquid crystalline materials which are instrumental from the application point of view. In the present work, GNRs have been dispersed in nematic liquid crystalline materials, namely 4-(trans-4-n-hexylcyclohexyl) isothiocyanatobenzene (6CHBT). Calorimetric, texture, spectroscopic, and dielectric studies were carried out for a pure 6CHBT and its composites with GNRs. Different calorimetric and dielectric parameters such as transition temperature, enthalpy, heat flow, permittivity, dielectric strength, dielectric anisotropy, and relaxation frequency have been determined, and the effect of GNRs has been explored. This article gives an insight into the influence of GNRs on the morphology and anisotropic physical properties of the nematic liquid crystalline material.

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Section: Resultsmentioning

confidence: 99%

“…Extraction of the correct frequency response of permittivity and loss after the removal of the low- and high-frequency parasitic effects , are shown in Figures and .…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Gold Nanorod-Induced Effects in a Mesogenic Compound 4-(trans-4-n-Hexylcyclohexyl) isothiocyanatobenzene

Lal,

Verma,

Chirra

et al. 2023

ACS Omega

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“…[17][18][19] The dispersion of semiconductor NPs in the nematic LCs has emerged as a captivating research area, primarily due to its promising applications in optoelectronics and display technologies. 17,[20][21][22][23] Semiconductor NPs exhibit distinct optical and electrical properties, while nematic LCs offer anisotropic molecular ordering and responsiveness to an external stimuli. 23 The integration of these materials has the potential to unlock new functionalities and enhance the performance of devices.…”

Section: Introductionmentioning

confidence: 99%

Unveiling the role of electrode polarization in modulating dielectric and electro-optical properties of SnSe dispersed nematic liquid crystal

Singh,

Mishra,

Hatshan

et al. 2024

Mater. Adv.

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“…Phytonanotechnology provides an eco-friendly, cost-effective, energy-efficient, rapid, and very simple method for NP synthesis. Several authors have reported green synthesis methods using different plant leaf extracts and other biological organisms, including bacteria, fungi, biofilms, and DNA-guided metal NP synthesis. – …”

Section: Introductionmentioning

confidence: 99%

Phytosynthesis of Silver Nanoparticles Using Oscimum sanctum Leaf Extract and Studies on Its Antidiabetic, Antioxidant, and Antibacterial Properties

Mishra,

Sundaram,

Srivastava

et al. 2023

ACS Appl. Bio Mater.

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The green synthesis of plasmonic metal nanoparticles (NPs) has gained considerable attention among researchers as it is cost-effective, environmentally friendly, energy-saving, and nontoxic. We have synthesized silver NPs (Ag NPs) with Oscimum sanctum (holy Tulsi) medicinal plant leaf extract by green synthesis methods. Further, we investigate the antibacterial, antioxidant, and antidiabetic activities of the synthesized Ag NPs. Oscimum sanctum leaf extract has secondary metabolites such as phenolic and flavonoid compounds, which play a significant role in the synthesis of Ag NPs. Subsequently, these bioactive molecules get adsorbed on the large surfaces of the synthesized NPs. Spectroscopic techniques such as X-ray diffraction (XRD), UV–visible absorption, Fourier-transform infrared, and scanning electron microscopy have been used to study and characterize the phytosynthesized Ag NPs. The XRD pattern confirms the formation of crystalline Ag NPs with a high degree of intensity. UV–visible absorption spectra confirm the surface plasmon resonance peak in the range of 440–450 nm. A scanning electron microscopy picture reveals homogeneous growth of Ag NPs with particle sizes of 200–400 nm; however, crystallite size along different planes has been estimated in the range of 18–23 nm. We have found that these Ag NPs synthesized with Oscimum sanctum leaf extract show inhibitory activity against α-amylase and α-glucosidase enzymes in vitro. Our findings further reveal that these Ag NPs are more effective in inhibiting the growth of Salmonella typhi bacteria as compared to other bacterial strains.

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Synthesis and characterization of semiconducting copper oxide nanoparticles and their impact on the physical properties of a nematic liquid crystalline material 4-pentyl-4′-cyanobiphenyl

Cited by 21 publications

References 72 publications

Gold Nanorod-Induced Effects in a Mesogenic Compound 4-(trans-4-n-Hexylcyclohexyl) isothiocyanatobenzene

Gold Nanorod-Induced Effects in a Mesogenic Compound 4-(trans-4-n-Hexylcyclohexyl) isothiocyanatobenzene

Unveiling the role of electrode polarization in modulating dielectric and electro-optical properties of SnSe dispersed nematic liquid crystal

Phytosynthesis of Silver Nanoparticles Using Oscimum sanctum Leaf Extract and Studies on Its Antidiabetic, Antioxidant, and Antibacterial Properties

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