Results 151 to 160 of about 2,143 (192)
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Thermochromism and Solvatochromism in Solution
Monatshefte fuer Chemie/Chemical Monthly, 2001The thermochromic behaviour of various coordination compounds in solution is discussed, with a special focus on cyclic diamine chelates. Thermally induced spin-crossover phenomena of iron(II) complexes are also considered. The solvatochromic behaviour of mixed-ligand complexes is presented in detail.
Usama El-Ayaan +2 more
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Solvatochromic and Fluorescence Behavior of Sulfisoxazole
Journal of Fluorescence, 2010The Fluorescence spectroscopic and solvatochromic behavior of Sulfisoxazole, a sulfa drug with antimicrobial activities, in various pure solvents of different polarity and hydrogen bonding capability is reported. The fluorescence emission spectrum of sulfisoxazole was found to be solvent polarity dependent, where a notable red shift in emission maximum
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Solvatochromic Probes in Supercritical Fluids
ChemInform, 2005AbstractFor Abstract see ChemInform Abstract in Full Text.
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The Journal of Physical Chemistry A, 1998
Excitation and emission fluorescence spectra of 2-naphthol and 2-methoxynaphthalene were measured in a series of pure solvents. The spectral shifts are correlated by the Kamlet−Taft parameters (π*, β, and α). As judged from the π* dependence, both molecules have a negligibly small dipole moment in their ground electronic state, which increases in the ...
Kyril M. Solntsev +2 more
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Excitation and emission fluorescence spectra of 2-naphthol and 2-methoxynaphthalene were measured in a series of pure solvents. The spectral shifts are correlated by the Kamlet−Taft parameters (π*, β, and α). As judged from the π* dependence, both molecules have a negligibly small dipole moment in their ground electronic state, which increases in the ...
Kyril M. Solntsev +2 more
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A microstructural model of solvatochromism
Advances in Molecular Relaxation and Interaction Processes, 1977Abstract A new microstructural model of solvatochromism is suggested and used to describe the solvent induced changes of both the electronic spectrum and structure of a simple pentamethinemerocyanine dye molecule. The electrostatic potential on the surface of a molecule is calculated from the net charges at the atomic centres, which are accessible ...
K.D. Nolte, S. Dähne
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Solvatochromic parameters of ethanolamines
Journal of the Chemical Society, Faraday Transactions, 1997The solvatochromic parameters measuring the polarity, hydrogen bond donation (Lewis acidity) and electron pair acceptance (Lewis basicity) abilities of ethanolamine, diethanolamine and triethanolamine have been determined spectroscopically by means of suitable indicators. The degree of structure of these liquids was calculated.
Abdulkarim S. Labban, Yizhak Marcus
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Fluorescence solvatochromism of nitrodiphenylhexatrienes
Journal of the Chemical Society, Faraday Transactions 2, 1985Examination of the absorption and fluorescence spectra of symmetrically and asymmetrically substituted 4′-nitro derivatives of 1,6-diphenyl-1,3,5,-hexatriene reveals fundamental transformations of photophysical behaviour relative to the parent molecule. The manifestations of this divergence are solvent dependent.
Iain D. Johnson +2 more
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Kinetics of fluorescence solvatochromism
Chemical Physics Letters, 1977Abstract While the static aspect of fluorescence solvatochromism is well understood, the kinetics has been the subject of few experimental investigations and theoretical considerations. A recently published microscopic model without cooperative effects is extended to include light polarization and rotational diffusion. Rotation-free pulse fluorimetry
H.E. Lessing, M. Reichert
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Solvatochromic spectroscopy of metamaterials [PDF]
, 2019 For the first time, it is shown theoretically and experimentally, that immersing metamaterial into liquids with different refractive indices enables spectroscopy capable of distinguishing between different multipole contributions to metamaterial’s transmission and reflection spectra.
Savinov, Vassili +4 more
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Solvatochromism and mechanochromism observed in a triphenylamine derivative
Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, 2019A donor–π–acceptor fluorescent dye, 4-[N,N-di(4-phenyl)amino]benzaldehyde 4-chlorobenzoyl hydrazone (TPA-CBH), based on a triphenylamine derivative (TPA) and 4-chlorobenzoyl hydrazine (CBH) was designed and synthesized. The optical properties of this luminogen were investigated in solutions as well as in the solid states.
Chunyang, Guo +6 more
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