Atahan, AlparslanOrhan, Ersin2020-04-302020-04-3020182149-0120https://dx.doi.org/10.18596/jotcsa.414821https://hdl.handle.net/20.500.12684/538In this study, a novel highly emissive compound was synthesized via a two-step synthetic procedure and characterized by1H-NMR,13C-NMR and FTIR. Then its photophysical properties, pH sensing behaviors and pH-dependent hydrolysis were systematically investigated by ultraviolet and fluorescence spectroscopy. Photophysics studies were carried out in fourteen common organic solvents and absorption/emission spectra were recorded in Britton Robinson buffers (pH=3-12) to determine pH sensing behaviors. From the photophysical results, it has been shown that the novel compound exhibits strongly solvent polarity dependent emission and has high quantum yield (up to 0.72). Furthermore, at pH=12, absorbance started to decrease while emission was increasing and blue-shifting due to basic hydrolysis after a several minutes. Therefore, time dependent hydrolysis was also investigated at mentioned pH. © 2018, Turkish Chemical Society. All rights reserved.en10.18596/jotcsa.414821info:eu-repo/semantics/openAccessFluorescence; Hydrolysis; Naphthalimide; PH Sensing; Photophysical; ThiazolineArticle52775784Q4