A 2D coordination polymer can exchange guest species from liquid sorption, with accompanying visible colour changes.

Please do not adjust margins a. Laboratory of Polymer Chemistry, Department of Materials, ETH Zurich, VladimirPrelog-Weg 5, 8093 Zürich, Switzerland b. Centre of Analysis and Synthesis, Lund University, P.O. Box 124, SE-22100 Lund, Sweden c. Chemistry Department, Faculty of Science, Assiut University, 71516, Assiut, Egypt d. Departament de Física Aplicada, EEI, Universitat Politècnica de Catalu...

For metal-based compounds, the ground- and excited-state dipole moments and the difference thereof are, for the first time, obtained both experimentally and theoretically using solvatochromic equations and DFT/B3LYP/QZVP calculations. The approach is suggested to be promising and easily accessible, and can be universal to elucidate the electronic properties of metal-based compounds.

Fluorescent betaines: 2-(N-pyridinio)(1a–c) , 2-(3-methyl-N-imidazolio)(2) and 2-(4-dimethylamino-N-pyridinio)-pyrimidin-4-olate (3) were synthesized from uracils. The compounds were subjected to absorption, steady-state and time-dependent emission studies. Substituent and solvent effects on the location of the absorption and fluorescence bands were investigated. The excited state dipole moment...

Neutral and cationic diarylbutadienes with pyridine and pyridinium groups as electron acceptors with dimethylamine and diphenylamine as electron donors were synthesized. The absorption and emission properties of these dienes were investigated in homogeneous organic solvents and in sodium cholate media. In strongly polar solvents, both neutral and cationic fluorophores exhibit a bathochromic shi...

For the detection of Cd(II) in aquatic media, a novel dicyanomethylene dihydrofuran hydrazone(DCDHFH)-based colorimetric chemosensor was developed. DCDHFH prepared by an azo-coupling process involving diazonium chloride 2, 4-dichloroaniline and heterocyclic moiety bearing active methyl group. The chromophore showed strong solvatochromism depending on solvent polarity due to electronic delocaliz...