Recently, a large number of studies have been dedicated to chemistry and physical stu­dies polymethine dyes, especially the functio­na­lized symmetrical heptamethinecyanines based on indole derivatives. Due their unique versatile spectral properties, which lie in near infrared region (NIR), meso-substituted indotricarbocyanine dyes are widely used various biological fields. In present work, we ...

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...