International Journal of Energy Research, Vol.45, No.5, 7797-7805, 2021
Synthesis, electrochemical, photophysical, and photovoltaic properties of new fluorescent compounds: 3H-benzofuro[2,3-b]pyrazolo[4,3-f]quinoline
The concern with fluorescent heterocyclic compounds has been growing because they can be utilized in dye-sensitized solar cells (DSSCs) as organic photosensitizers. As a result of the experiment we conducted, the following outcomes emerged: new fluorescent heterocyclic systems 3H-benzofuro[2,3-b]pyrazolo[4,3-f]quinolines ensued from reaction of 1-alkyl-5-nitro-1H-indazole with 2-(benzofuran-3-yl)acetonitrile in KOH/MeOH. New heterocyclic compounds were characterized through a use of elemental analysis and spectroscopic data. The results of the optical properties of the fluorescent compounds demonstrated that their fluorescence quantum yields are comparable to the quantum yields of such well-known fluorescent dyes as fluorescein. Furthermore, the cyclic voltammetry revealed the electrochemical attributes of the fluorescent heterocyclic systems and that reversible oxidation waves are observable in their case. In order for their photovoltaic performance parameters to be determined, the I-V curves and the IPCE spectra of the new compounds were launched into an investigation. What followed exposed that the photovoltaic performances of the foregoing compounds were 5.01% to 5.17%.