Solvent effects on 2,6-dichloro-4-(2,4,6-triphenyl-pyridinium-1-yl)phenolate [ET (33) dye] and 7diethylamino-3,4-benzophenoxazine-2-one (Nile Red) in binary mixtures of organic solvents (acetone, acetonitrile, propylene carbonate, methanol and ethane-1,2-diol) with 1,3-dialkyl imidazoliumbased ionic liquids were studied by UV-visible spectroscopy. Highly nonlinear behaviour of mixtures of alcoh...

BACKGROUND  The use of solvatochromic dyes to investigate homeopathic potencies holds out the promise of understanding the nature of serially succussed and diluted solutions at a fundamental physicochemical level. Recent studies have shown that a range of different dyes interact with potencies and, moreover, the nature of the interaction is beginning to allow certain specific characteristics of...

Electrostatic interactions provide a primary connection between a protein's three-dimensional structure and its function. Infrared probes are useful because vibrational frequencies of certain chemical groups, such as nitriles, are linearly sensitive to local electrostatic field and can serve as a molecular electric field meter. IR spectroscopy has been used to study electrostatic changes or flu...

Fluorescent pyrimidine analogs containing a fused biphenyl unit were prepared in high yields using stereoselective N-glycosylation and Suzuki-Miyaura cross-coupling reactions. The resulting "push-pull" fluorophores exhibit highly solvatochromic emissions from twisted intramolecular charge-transfer (TICT) states.

The Solvatochromic technique was used to examine the solvent effects of ethyl 5-methyl-3 phenyl-1 H -indole 2-carboxylate [5-MPIC]. Different solvents were record 5-MPIC’s absorption and emission spectra at room temperature (300 K). ground state excited dipole moments estimated experimentally using Lippert’s, Bakshiev’s Kawaski Chamma Viallet’s equations. HOMO-LUMO gap MEP map also theoreticall...

A 19F solvatomagnetic comparison of 4-fluorophenol and 4-fluoroanisole yields a more reliable measurement the hydrogen-bond acceptance ionic liquids green solvents than solvatochromic method.

Solvatochromic behaviours of triazine substituted dyes were evaluated using a novel approach derived from the red shift index (RsI) and associated solvation energy (ASE). These parameters used to describe trends dye–solvent interactions based on their polarity changes. The concept demonstrates effect substituent changes scaffold induced solvent as solvated go through HOMO–LUMO (highest occupied...

The correspondence between the exact embedding potential and the pair of the electron densities--that of the embedded molecule and that of its environment [Wesolowski and Warshel, J. Phys. Chem. 1993, 97, 8050]--is used to generate the average embedding potential and to subsequently calculate the solvatochromic shifts in a number of organic chromophores in solvents of various polarities. The av...