Synthesis and Characterization of Fluorenone Based Small Molecule and Investigation of Its Photophysical Properties

Abstract

A fluorenone-based small molecule consisting of central 2,7-bis(ethynyl)-9-fluorenone core and BODIPY units at both sides (3) has been developed through the palladium/copper-catalyzed Sonogashira coupling reactions. The newly synthesized molecule was characterized by Fourier transform infrared (FT-IR), proton/carbon nuclear magnetic resonance (1H/13C NMR), mass (MALDI-TOF), and elemental analysis. The photophysical properties of the new compound and its precursor were investigated by ultraviolet-visible (UV-Vis) and fluorescence spectroscopy techniques.