Güncel Gönderiler: Fizik Bölümü
Toplam kayıt 1178, listelenen: 1061-1080
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Emerging ground and excited state dipole moments and external electric field effect on electronic structure. A solvatochromism and theoretical study on 2-((phenylimino)methyl)phenol derivatives
(Elsevier Science BV, 2015)The absorption and fluorescence spectra of three 2-((phenylimino)methyl)phenol derivatives have been evaluated in a series of organic solvents. The ground state (mu(g)) and excited state (mu(e)) dipole moments are determined ... -
Synthesis characterization and biological activity of mixed ligand silver(I) complex of 2-benzimidazolylurea and triphenylphosphine
(Pergamon-Elsevier Science LTD, 2017)The treatment with triphenylphosphine (TPP) in DMF solution of the white precipitation derived from the reaction of silver(I) nitrate with 2-benzimidazolylurea (BZIMU) results in the [Ag(TPP)(2)(BZIMU)NO3] (1) complex. The ... -
Spectroscopic Determination of Acid Dissociation Constants of Some Novel Drug Precursor 6-Acylbenzothiazolon Derivatives
(American Chemical Society, 2010)The acid dissociation constants, as pK(a) values, of eight drug precursor 6-acylbenzothiazolon derivatives were determined using UV-vis spectroscopic technique. The protonation and deprotonation behaviors of the investigated ... -
Specific and non-specific interaction effect on the solvatochromism of some symmetric (2-hydroxybenzilydeamino)phenoxy Schiff base derivatives
(Elsevier Science BV, 2016)In this present work, solvatochromic behavior, specific and non-specific solute-solvent interactions and electronic structure of (2-hydroxybenzilydeamino)phenoxy Schiff base derivatives have been investigated by using ... -
Solvatochromic behavior and electronic structure of some symmetric 2-aminophenol Schiff base derivatives
(Elsevier Science BV, 2014)The solvatochromic behavior and electronic structure of four symmetric 2-aininophenol Schiff base derivatives were investigated by using electronic absorption spectra in fourteen different spectroscopic grade solvents. The ... -
Theoretical studies on the structure of [(1-aza-2-benzimidazol-2-ylprop-1-enyl)amino]aminomethane-1-thione
(Arkat Usa Inc, 2007)The tautomerisation and acid-base properties of [(1-aza-2-benzimidazol-2-ylprop-1-enyl) amino]aminomethane-1-thione were studied both in the gas and aqueous phase to elucidate the structure of this compound. The computed ... -
Solvatochromism and electronic structure of some symmetric Schiff base derivatives
(Elsevier Science BV, 2015)In this present work, we have investigated electronic absorption spectra of three symmetric Schiff bases in fourteen spectroscopic grade solvents which have different polarities. The electronic transitions have been evaluated ... -
Spectroscopic determination of acidity constants of some monoazo resorcinol derivatives
(American Chemical Society, 2008)The acidity constants, as pK(a) values, of six monoazo resorcinol derivatives were determined by the UV-visible spectroscopic technique at 25 degrees C (+/- 0.1 degrees C). The protonation and deprotonation behaviors of ... -
DFT, FT-Raman and FT-IR investigations of 1-cyclobutylpiperazine
(Pergamon-Elsevier Science LTD, 2012)FT-IR and FT-Raman spectra of 1-cyclobutylpiperazine (1cbpp) have been experimentally reported in the region of 4000-10 cm(-1) and 4000-50 cm(-1), respectively. The optimized geometric parameters, conformational equilibria, ... -
Infrared, Raman and density functional characterization and structural study of 2-Nitro-2-phenyl-propane-1,3-diol
(Elsevier Science BV, 2017)Nitro compound and nitro derivatives are industrially important to produce rubber and agricultural chemicals. In this study, one of the promising derivatives of nitro compound 2-Nitro-2-phenyl-propane-1,3-diol (2NPP) is ... -
Vibrational spectra, DFT calculations, conformational stabilities and assignments of the fundamentals of the 1-butylpiperazine
(Elsevier Science BV, 2016)FT-IR and FT-Raman spectra of 1-butylpiperazine (1bpa) were experimentally recorded in the region of 4000-10 cm(-1) and 4000-100 cm(-1), respectively. The optimized geometric parameters, conformational equilibria, normal ... -
The effect of Mo addition on the microstructure and J(c) properties of MgB2 tapes fabricated by PIT method
(Elsevier Science Sa, 2008)We investigated the effect of Mo addition to MgB2/Ag tapes fabricated by the ex situ PIT method. The heat treatments were carried out at 600 degrees C for 24 h under At atmosphere. The structural development, microstructures, ... -
Influence of Al concentration on structural and optical properties of Al-doped ZnO thin films
(Springer, 2014)Undoped ZnO and Al-doped zinc oxide (ZnO:Al) thin films with different Al concentrations were prepared onto Si (100) substrate by pulsed filtered cathodic vacuum arc deposition system at room temperature. The influence of ... -
Bound states of the Dirac equation for the generalized Woods-Saxon potential in pseudospin and spin symmetry limits
(World Scientific Publ Co Pte LTD, 2014)Bound state solutions of the Dirac equation for the generalized Woods-Saxon potential are examined for arbitrary. states by using the approximation to the Coulomb and centrifugal potentials in pseudospin symmetry (PSS) and ... -
Electrochemical effects and magnetic properties of B substituted LiCoO2: Improving Li-battery performance
(Elsevier Science Sa, 2016)LiCo(1-x)BxO(2) (x = 0, 0.125, 0.25, 0.375, 0.5, 0.75 and 1) samples were synthesized via solid state reactions. They were characterized by SEM, X-ray powder diffraction, FTIR, Raman, electrical and magnetic measurements. ... -
Fabrication of Ca-Mn-Nb-O compounds and their structural, electrical, magnetic and thermoelectric properties
(IOP Publishing LTD, 2018)CaMn1-xNbxO3-delta (0 <= x <= 1) were synthesized by conventional solid state reaction method. The structural properties were determined by FTIR, Raman, XRD, XAS measurements. The FTIR and Raman modes change by increasing ... -
Structural, magnetic, electrical and electrochemical properties of SrCo02.5, Sr9Co2Mn5O21 and SrMnO3 compounds
(Elsevier Sci LTD, 2017)SrCo1-xMnxO3-d (0 <= x <= 1) were synthesized by conventional solid state reaction method. We found that Mn substitution hinders the decomposition of carbonate at 900 degrees C and increases the synthesis temperature of ... -
FT-IR and Raman spectroscopic and quantum chemical investigations of some metal halide complexes of 1-phenylpiperazine
(Pergamon-Elsevier Science LTD, 2012)New metal halide complexes in the form of M(pp)(2)Cl-2 (where pp = 1-phenylpiperazine and M = Pd or Hg) have been prepared for the first time and their FT-IR and FT-Raman spectra are reported in the region of 4000-10 cm(-1) ... -
Vibrational investigation of 1-cyclopentylpiperazine: A combined experimental and theoretical study
(Science Press, 2014)FT-IR and Raman spectra of 1-cyclopentylpiperazine (1cppp) have been experimentally examined in the region of 4000-200 cm(-1). The optimized geometric parameters, conformational equilibria, normal mode frequencies and ... -
Effect of tri-sodium citrate concentration on structural, optical and electrical properties of chemically deposited tin sulfide films
(Elsevier Science BV, 2014)Tin sulfide thin films were deposited onto glass substrates by chemical bath deposition. The effects of molar concentration of the complexing agent, tri-sodium citrate, on the structural, morphological, optical and electrical ...
