Isatin-1,8-Naphthalimide Hydrazones: A Study of Their Sensor and ON/OFF Functionality

Authors :: Marek Cigáň
Gabriela Addová
Juraj Filo
Jana Donovalová
Miroslav Horváth
Klaudia Csicsai
Anton Gáplovský
Róbert Sokolík
Pavol Tisovský
Source :: Molecules, Molecules, Vol 24, Iss 3, p 397 (2019), Volume 24, Issue 3
Publication Year :: 2019
Publisher :: MDPI, 2019.
Abstract: Five novel hydrazones derived from substituted isatins were synthesized as potential anion sensors. Using UV-VIS, FTIR, NMR and fluorescence spectroscopy, these compounds&rsquo tautomeric equilibrium and Z-E photoisomerization were studied in DMF and CHCl3, depending on the hydrazone concentrations, the presence of basic anions and light stimulation. Anion recognition aspects (PF6&minus HSO4&minus Br&minus Cl&minus NO3&minus F&minus and CH3COO&minus ) and these receptors&rsquo detection limits were also studied. We also tested the light-stimulated ON-OFF functionality of these compounds in the presence or absence of these anions.

Tools