Photophysics, pH Sensing and Hydrolysis Study of a Novel 1,8-Naphthalimide Derivative

Authors : Alparslan ATAHAN, Ersin ORHAN

Pages : 775-784

Doi:10.18596/jotcsa.414821

View : 9 | Download : 5

Publication Date : 2018-01-01

Article Type : Research Paper

Abstract :In this study, a novel highly emissive compound was synthesized via two steps synthetic procedure and characterized by 1 H-NMR, 13 C-NMR and FTIR. Then its photophysical properties, pH sensing behaviours 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 insert ignore into journalissuearticles values(pH=3-12); to determine pH sensing behaviours. From the photophysical results, it has been shown that the novel compound exhibits strongly solvent polarity dependent emission and has high quantum yield insert ignore into journalissuearticles values(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. 
Keywords : Naphthalimide, Thiazoline, Photophysical, Fluorescence, pH sensing, hydrolysis