Results 181 to 190 of about 7,506 (232)

Solvatochromic rotaxane molecular shuttles

Chemical Communications, 2011
A strongly fluorescent bistable rotaxane is described in which the relative position of the macrocyclic ring with respect to a solvatochromic fluorophore gives a strong response in the spectral domain.
Günbaş, D.D., Zalewski, L., Brouwer, A.M.   +2 more
openaire   +4 more sources

Indole’s solvatochromism revisited

The Journal of Chemical Physics, 1986
The absorption and emission solvatochromism of five indole derivatives was studied by referring the shifts to the corresponding vapor-phase wave numbers. The emission results clearly demonstrate, in three cases, the change in the nature of the emitting state when the solvent polarity is increased.
Hans Lami, Nicole Glasser
openaire   +1 more source

Solvatochromic benzo[h] coumarins: Synthesis, solvatochromism, NLO and DFT study

Optical Materials, 2017
Abstract Three benzo[h] coumarins were synthesized and analyzed for their potential NLOphoric properties. Coumarins were synthesized using Knoevenagel condensation method by reacting hydroxyl-naphthalene aldehyde with cyano-methylelene-benzazoles containing NH, O and S elements respectively as the active methylene compounds. The absorption maxima for
Umesh Warde, Nagaiyan Sekar
openaire   +1 more source

Solvatochromism of pyranine-derived photoacids

Physical Chemistry Chemical Physics, 2013
Photoacidity is frequently found in aromatic alcohols where the equilibrium dissociation constant increases by some orders of magnitude upon electronic excitation. In this study we investigated the solvatochromism of a family of recently synthesized super-photoacids and their methylated counterparts based on pyrene.
Finkler, Bjoern, Spies, Christian, Acar, Nursel, Jung, Gregor   +3 more
openaire   +3 more sources

Solvatochromism of BODIPY-Schiff Dye

The Journal of Physical Chemistry B, 2014
A boron-dipyrrin chromophore connected with an o-hydroxyaryl aldimine by a diazo bridge (BODIPY-Schiff dye) has been developed. The photophysical properties of the BODIPY-Schiff dye have been investigated with UV, steady-state, and time-resolved fluorimetry.
Aleksander, Filarowski, Marina, Lopatkova, Paweł, Lipkowski, Mark, Van der Auweraer, Volker, Leen, Wim, Dehaen   +5 more
openaire   +2 more sources

Solvatochromic parameters of ethanolamines

Journal of the Chemical Society, Faraday Transactions, 1997
The 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
openaire   +1 more source

Solvatochromism in supercritical fluids

Berichte der Bunsengesellschaft für physikalische Chemie, 1998
AbstractSolvatochromic shifts of the five probe indicators 2‐nitroaniline, 4‐nitroaniline, 4‐nitroanisole, 4‐nitrophenol, and N,N‐dimethyl‐4‐nitroaniline have been used to specify the solvatochromic solubility parameters π* and β of the five pure fluids CO2, N2O, CClF3, SF6, and NH3 according to Kamlet, Abboud, and Taft by means of UV/VIS spectroscopy.
Michael Maiwald, Gerhard M. Schneider
openaire   +1 more source

New solvatochromic inorganic complexes

Spectrochimica Acta Part A: Molecular Spectroscopy, 1991
Abstract The solvatochromic behaviours of bis-cyclopentadienyl titanium(IV) dithiocyanate and of the hexacyanobis-2,2′-bipyridyltungstate(IV) and tricyano-2,2′-bipyridyloxotungstate(IV) anions are described. The solvent sensitivities of these complexes are compared with those of biscyanobis-2,2′-bipyridyliron(II) and other established inorganic ...
A. Al-Alousy, J. Burgess, A. Samotus, J. Szklarzewicz   +3 more
openaire   +1 more source

Solvatochromic Probes in Supercritical Fluids

ChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
openaire   +1 more source

Kinetics of fluorescence solvatochromism

Chemical Physics Letters, 1977
Abstract 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
openaire   +1 more source