• PRATIK SEN

Articles written in Journal of Chemical Sciences

• Excited-state proton transfer from pyranine to acetate in methanol

Excited-state proton transfer (ESPT) of pyranine (8-hydroxypyrene-1,3,6-trisulphonate, HPTS) to acetate in methanol has been studied by steady-state and time-resolved fluorescence spectroscopy. The rate constant of direct proton transfer from pyranine to acetate ($k_1$) is calculated to be $\sim 1 \times 10^9$ M-1 s-1. This is slower by about two orders of magnitude than that in bulk water ($8 \times 10^{10}$ M-1 s-1) at 4 M acetate.

• Rational design, preparation and characterization of a ternary nonionic room-temperature deep eutectic solvent derived from urea, acetamide, and sorbitol

Deep eutectic solvents (DESs) have emerged as a new kind of solvent and an excellent alternative to ionic liquids, thanks to its simplicity in preparing and availability of a large number of potential constituents to tune the properties. However, most of the reported DESs are ionic, and to the best of ourknowledge, only a few non-ionic DESs are available, which are liquid at room temperature. Here, we rationally design and report a new ternary non-ionic DES comprising of acetamide, urea, and sorbitol, which is liquid at room temperature. We also report some of the important physical properties like refractive index(nD), sound velocity (u), density (r), and dynamic viscosity (h).

• # Journal of Chemical Sciences

Volume 134, 2022
All articles
Continuous Article Publishing mode

• # Editorial Note on Continuous Article Publication

Posted on July 25, 2019