Abstract
New fluorophore molecules based on combination of naphthalimide and phosphazene groups (4 and 5) were obtained in high yields via one-step nucleophilic substitution reactions and characterized by spectroscopic methods. Also, crystal structures of 2-[2-(4-hydroxy-phenyl)-ethyl]-benzo[de]isoquinoline-1,3-dione (1) and the novel molecule (5) were determined by single-crystal X-ray diffraction technique. Electronic absorption, steady-state and time resolved fluorescence measurements were performed to determine photophysical properties of the compounds. In addition, their solid-state fluorescence spectra were recorded by using fiber optic system. Their fluorescence properties evidence the excimer emission in the visible region (∼460nm) in solution and solid-state. This excimer emission is attributed to the π-π stacking interactions which is further supported from crystal structures of the molecules. Moreover, both compounds exhibited high molar extinction coefficients in solution and moderate fluorescence emission especially in solid–state.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
