10 results match your criteria: "Kurukshetra University Kurukshetra 136119 Haryana India.[Affiliation]"
Tuning emissive color of trivalent terbium ion through environmental factors: optoelectronic insights from theoretical, spectral and computational studies.
RSC Adv
December 2024
Department of Chemistry, COBS&H, CCS Haryana Agricultural University Hisar-125004 Haryana India.
The combination of 4,4,4-trifluoro-1-phenyl-1,3-butanedione (TFPB) and pyrazine (pyz) with Tb ions forms two distinct types of complexes, represented by the formulas [Tb(TFPB)(L)], where L is either HO or pyz, and [(Tb(TFPB))pyz]. A detailed examination of the impact of the surrounding environment on the photophysical properties of these synthesized complexes was conducted. Photoluminescence (PL) analysis indicated that the magnetic dipole transition (D → F) is dominant in Tb(iii)-based systems.
View Article and Find Full Text PDFThis report describes the visible-light-induced one-pot multicomponent regioselective synthesis of a series of 5-aroyl-3-((arylidene)amino)-2-((arylidene)hydrazono)-4-methyl-2,3-dihydrothiazoles as DNA and BSA targeting agents. The multicomponent condensation of thiocarbohydrazide and aldehydes with α-bromo-1,3-diketones, generated by the bromination of unsymmetrical 1,3-diketones with NBS using white LED light as an environmental friendly source in the presence of EtOAc solvent furnished the titled 2,3-dihydrothiazole derivatives in excellent yields. The exact regioisomeric structure was identified unambiguously by employing multinuclear 2D-NMR spectroscopy [H-C] HMBC; [H-C] HMQC and [H-N] HMBC.
View Article and Find Full Text PDFComplexes of dysprosium(iii) ions with 1,1,1,5,5,5-hexafluoro-2,4-pentanedione featuring various mono and bi-dentate neutral ligands have been prepared and thoroughly investigated. The synthesized complexes exhibit an octa-coordinated environment, achieved by stoichiometrically combining organic ligands and Dy(iii) ions. This octa-coordination environment of Dy(iii) ion was confirmed by FT-IR spectroscopy, thermogravimetry and elemental analysis.
View Article and Find Full Text PDFDesigning novel anti-plasmodial quinoline-furanone hybrids: computational insights, synthesis, and biological evaluation targeting lactate dehydrogenase.
RSC Adv
June 2024
Center for Global Health Research, Saveetha Medical College, Saveetha Institute of Medical and Technical Sciences India
To combat resistance against current antimalarials, modifying key pharmacophores and exploring novel parasite-specific drug targets remained one of the key drug design strategies. The resistance to quinoline-based antimalarials arises often due to the efflux of the drug. Hence, the development of newer agents containing bulkier pharmacophores will enable medicinal chemists to counteract drug resistance.
View Article and Find Full Text PDFA series of green-emitting Y SiO:Er phosphors ( = 1-7 mol%) have been successfully synthesized using a straightforward gel-combustion method facilitated by urea. X-ray diffraction analysis provided specific patterns for samples, confirming a consistent triclinic phase across erbium-doped structures compared to undoped structures. Studies using TEM and EDX were conducted to identify the surface-related characteristics and chemical composition of the synthesized nanophosphor, respectively.
View Article and Find Full Text PDFA cheap, versatile, sustainable and energy-efficient gel-combustion method was applied to develop a series of green-emitting down-converted YSiO:Tb (YPS:Tb) nanophosphors. Employing XRD-based Rietveld refinement approach, the phase purity and crystallographic evaluation of the produced phosphor were conducted, revealing a triclinic crystal with 1̄ space group. EDX and TEM analyses were performed on the synthesized samples to determine their elemental composition and morphological properties.
View Article and Find Full Text PDFSerendipitous ,-difunctionalization of triazoles with trifluoromethyl-β-diketones: access to regioisomeric 1-trifluoroacetyl-3-aryl-5-(2-oxo-2-arylethylthio)-1,2,4-triazoles as DNA-groove binders.
RSC Adv
February 2024
Department of Chemistry, Kurukshetra University Kurukshetra-136119 Haryana India.
In the present research work, a serendipitous regioselective synthesis of DNA targeting agents, 1-trifluoroacetyl-3-aryl-5-(2-oxo-2-arylethylthio)-1,2,4-triazoles, has been achieved through the one-pot cascade reaction of 3-mercapto[1,2,4]triazoles with trifluoromethyl-β-diktetones in presence of NBS instead of the cyclized thiazolo[3,2-][1,2,4]triazole. The present protocol offered a unique approach for functionalizing both -acylation and -alkylation in a concerted fashion. The structures of the regioisomeric products were thoroughly characterized by heteronuclear 2D NMR experiments.
View Article and Find Full Text PDFA series of lanthanide complexes have been synthesized with fluorinated 1,3-diketones and heteroaromatic ancillary moieties. Spectroscopic studies reveal the attachment of the respective lanthanide ion to the oxygen site of β-diketone and nitrogen site of auxiliary moieties. The conducting behavior of the complexes is proposed by their optical energy gaps which lie in the range of semiconductors.
View Article and Find Full Text PDFCool green light emanating monoclinic Y AlO:Tb ( = 1-5 mol%) nanophosphors have been fabricated through gel-combustion method. X-ray diffraction and transmission electron-microscopy data have been utilized to assess their structural and microstructural characteristics, including cell parameters and crystallite size. Uneven aggregation of nanoparticles in the nano-scale with distinctive porosity can be seen in the TEM micrograph.
View Article and Find Full Text PDFCurie temperature engineering in a novel 2D analog of iron ore (hematene) strain.
Nanoscale Adv
December 2020
Department of Physics, Kurukshetra University Kurukshetra 136119 Haryana India +91-1744-238277 +91-1744-238410 extn 2482.
As a newly exfoliated magnetic 2D material from hematite, hematene is the most far-reaching ultrathin magnetic indirect bandgap semiconductor. We have carried out a detailed structural analysis of hematene prefacing strain by means of first-principles calculations based on density functional theory (DFT). Hematene in the pristine form emerges out to be a magnetic semiconductor with a bandgap of 1.
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