Super-photoacids, i.e., photoacids with a negative pK value in the electronically excited state, can trigger an excited-state proton transfer (ESPT) to solvent. For neutral pyranine-derived super-photoacid studied here, even indications for ESPT acetoneous solution are reported. The characteristics of this environment, which intermediates exist and what impact co-solvents is, remain unsettled t...

Highly excited states of rubidium (Rb) atoms attached to helium (He) nanodroplets are studied by two-photon ionization spectroscopy in combination with electron and ion imaging. We find high yields of RbHe and RbHe(2) exciplexes when exciting to the 4D and 6P bands but not at the 6S band, in accord with a direct formation of exciplexes in binding RbHe pair potentials. Photoion spectra and angul...

Two simple, accurate and sensitive spectrophotometric methods were developed for the determination of ticlabendazole in bulk and pharmaceutical formulation. These methods were based on the formation of ion-pair association complex (1:1) with bromocresol purple (BCP) and bromophenol blue (BPB). The coloured products were extracted into chloroform and measured spectrophotometrically at 420 nm. Li...

ChEBI [3], EMBL-EBI’s database of Chemical Entities of Biological Interest, is a freely available, manually annotated database of small molecular entities (molecules not encoded by the genome, Figure 1). These could include any constitutionally or isotopically distinct atom, molecule, ion, ion pair, radical, radical ion [4], complex, conformer [5], or anything else that is a separately distingu...

phase together with a counterion. Schurig V (1984) Gas chromatographic separation of enantiomers on optically active stationary phases. Angewarde Chemie International Edition English 23: 747}765. Schurig V (1994) Enantiomer separation by gas chromatography on chiral stationary phases. Journal of Chromatography 666: 111}129. Schurig V and Nowotny H-P (1990) Gas chromatographic separation of enan...

We present methods for generating computationally simple parameter-free pair potentials useful solids, liquids and plasma at arbitrary temperatures. They successfully treat warm-dense matter (WDM) systems like carbon or silicon with complex tetrahedral other structural bonding features. Density functional theory asserts that only one-body electron densities, ion densities are needed a complete ...