Results 181 to 190 of about 7,561 (220)
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Solvatochromic Probes in Supercritical Fluids
ChemInform, 2005AbstractFor Abstract see ChemInform Abstract in Full Text.
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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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Solvatochromism of indonaphthol dye
Fibers and Polymers, 2008The solvatochromic behavior of indonaphthol dye was described. The UV/Vis absorption spectra of this compound have been studied in 5 solvents of different polarity. The solvatochromism of indonaphthol dye is discussed with the aid of semiempirical calculations.
Jin-Seok Bae, Young-A Son, Sung-Hoon Kim
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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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Vibrational Solvatochromism in Vaska’s Complex Adducts
The Journal of Physical Chemistry A, 2012The vibrational solvatochromism of bis(triphenylphosphine) iridium(I) carbonyl chloride (Vaska's complex, VC) was investigated by FTIR spectroscopy. The carbonyl stretching frequency (ν(CO)) was measured in 16 different organic solvents with a wide range of Lewis acidities for VC and its dioxygen (VC-O(2)), hydride (VC-H(2)), iodide (VC-I(2)), bromide (
Christopher J, Huber +5 more
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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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Solvatochromic Dye Sensitized Nanocrystalline Solar Cells
Nano Letters, 2002The coordination compound TBA(4)[Ru(CN)(4)(dcb)], where TBA is tetrabutylammonium and dcb is 4,4'-(CO2-)(2)-2,2'-bipyridine, was synthesized and attached to optically transparent nanocrystalline (anatase) TiO2 films, abbreviated [Ru(CN)(4)(dcb)]/TiO2.
Argazzi +4 more
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Solvatochromic Shifts: A Reconsideration
The Journal of Physical Chemistry A, 1998Solvatochromic shifts in molecular spectra are often used to determine excited-state dipole moments. In comparing results with the more accurate gas-phase Stark effects studies, large discrepancies are obtained in the few cases in which both types of studies have been carried out. We attempt to reconcile the two techniques by reanalyzing solvatochromic
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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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A solvatochromic chelating agent
Talanta, 1963Abstract 1-Methyl-2-[2-(8-hydroxy-5-quinolyl)vinyl]-8-hydroxyquinolinium chloride has been prepared as an example of a chelating agent for metals that changes colour with solvent polarity. As a chelating agent it has some selectivity, precipitating only the copper II ion in an acidic solution and forming a distinctively coloured product with zinc in
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