Wani J.A.,Rashtrasant Tukadoji Maharaj Nagpur University |
Atone M.S.,Mm Science College |
Dhoble N.S.,Sevadal Mahila Mahavidhyalaya |
Dhoble S.J.,Rashtrasant Tukadoji Maharaj Nagpur University
Journal of Luminescence | Year: 2013
Effect of different rare earths co-activated in CaSO4:Dy, P phosphor prepared by acid distillation method are reported in this paper. For characterization of phosphors scanning electron microscopy (SEM), photoluminescence (PL) and thermoluminescence (TL) spectra were carried out. The SEM characterization shows that the surface morophology resulted after preparation has rod type structures with particle size in micron range. Under photoluminescence study the incorporation of different co-dopants with their characteristic photoluminescence spectra in CaSO4:Dy, P host is confirmed. Thermoluminescence (TL) property of as prepared phosphors is comparatively good though certain variations have been observed in case of some phosphors. The TL intensity of phosphors prepared and reported in this paper is nearly 1.11 times greater than the standard CaSO4:Dy TLD phosphor. © 2012 Elsevier B.V. All rights reserved.
Modhavadiya V.A.,Mm Science College
Oriental Journal of Chemistry | Year: 2012
P-Cresyl acetate (I) has been prepared by acetylation of p-Cresol. Fries migration of (I) yields 2-Acetyl-4-methyl phenol (II). Clemmensen's reduction of (II) yields 2-Ethyl-4-methyl phenol (III). Diazonium salt (IV) prepared by diazotizatin of sulfamethoxazole. Azo dye ligand 3-ethyl-2-hydroxy-5-methyl- 4′-( 5″-methyl-oxazolel-3″-yl ) amino sulphonyl azobenzene (V) has been prepared by coupling of 2-Ethyl-4-methyl phenol (III) with Diazonium salt (IV) at 0-5 °CBy refluxing alcoholic solution of ligand with aqueous solution of metal salts yields azo dye ligand complexes (Vl) of ML 2 (H 2O) 2 or ML 2 type. They were characterized by elemental analysis, absorption spectra, conductivity measurement, molecular weight determination and magnetic susceptibility measurements. The ligand as well as the metal complex has been screened for their antimicrobial activity against a number of micro organisms.
Jethva H.O.,Mm Science College |
Parsania M.V.,Mm Science College
Asian Journal of Chemistry | Year: 2010
Lead tartrate crystals were grown using silica gel as the growth medium. Lead acetate was taken as the supernatant solution. The grown crystals were characterized by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction analysis (XRD). The FT-IR spectra were recorded in 4000-400 cm-1 range. FT-IR spectra reveals the presence of water molecules, O-H bond, C-O and carbonyl (C=O) bonds. XRD reveals the crystalline nature and its various planes of reflection.
Bhadja D.R.,Mm Science College |
Parsania P.H.,Saurashtra University
Oriental Journal of Chemistry | Year: 2011
Polyphosphate of l.l-bisfR.RM-hydroxyphenyOcyclohexane (R,R"=H 1CH 3and Cl) are synthesized by refluxing bisphenol-c derivative with phosphorous oxytrichloride in pyridiene at 95°C for 4hr and then at 240 °C for 6hr. Polyphosphate have been ascertained by IR and NMR spectral data. Polyphosphate are also Characterized by their antibacterial and antifungal activities. The activity is interpreted in light of Wsphenol Structure and the nature of substituent(s).