The solvatochromic effects of six different solvents on the UV absorption spectrum of 2-thiocytosine have been studied by a combination of experimental and theoretical techniques. The steady-state absorption spectra show significant shifts of the absorption bands, where in more polar solvents the first absorption maximum shifts to higher transition energies and the second maximum to lower energ...

This study describes the synthesis, photophysical characterization, and TD-DFT calculation of a series benzothiazole-based styryl fluorophores (F1-F5) harboring D-π-A structure. The compounds were obtained through simple efficient synthetic route using low-cost starting materials. investigation analysis their properties enable assessment effect four substituted benzothiazole moieties (A) two ty...

Push–pull dyes exhibit intramolecular charge transfer behavior, which due to changes in the dipole moment upon excitation, is origin of their sensitivity environment. Such compounds are interest as probes for bioimaging and biosensors monitor cellular dynamics molecular interactions. Desirable biological absorb visible region, have high extinction coefficients, quantum yield excellent photostab...

The solvation properties of some room-temperature ionic liquids consisting of imidazolium cations and various anions were examined by means of the high-pressure spectroscopy with solvatochromic probes. We measured the pressure dependence of KamletTaft solvatochromic parameters (π∗, β) and microviscosity (η). It was found that π∗ and β were not so sensitive to the types of imidazolium cations an...

of various physicochemical and spectroscopic measurements using various indicator compounds. 1–6 Especially, three parameters, dielectric constant, DC, donor number, DN, and acceptor number, AN serve as fundamental and extensive set for applications. However, it is not easy to directly derive these parameters by means of the original measurement method. It is expected that they can be predicted...

The concentrations of all components in the phases of aqueous two-phase polyethylene glycol-sodium sulfate system of a fixed composition with different concentrations of NaCl additive were determined. Solvatochromic solvent features of aqueous media in the phases of all the systems were characterized in terms of solvent dipolarity/polarizability, solvent hydrogen bond donor acidity and hydrogen...