Tasgin, Dilek IsikBayraktar, Irem2024-09-192024-09-192024Isik Tasgin, Dilek; Bayraktar, Irem (2024). "Pyrrolizine-3-ones: Synthesis and evaluation of photophysical properties", Synthetic Communications, Vol. 54, No. 3, pp. 216-228.0039-79111532-2432https://doi.org/10.1080/00397911.2023.2292699We describe a synthetic approach for pyrrolizine-3-one derivatives and their photophysical properties. These compounds are prepared by a series of reactions employing the substituted pyrroles in one-pot, two-step oxidation, and intramolecular cyclization processes. The photophysical properties of the synthesized compounds were studied by using UV-Vis and fluorescence spectroscopy in different solvents. Maximum absorbance peaks were observed around 306-416 nm and maximum fluorescence emission around 603-614 nm and 465-498 nm for pyrrolyl and N-methyl pyrrolyl substituents, respectively. The introduction of a pyrrolyl substituent had a significant impact on the Stokes shifts (192-206 nm) and quantum yield values ranged from 0.002 to 0.046.eninfo:eu-repo/semantics/closedAccessPyrrolizinonesPhotophysical PropertiesSmall-Molecule Organic DyesLarge Stokes ShiftFluorescenceArticle54321622810.1080/00397911.2023.22926992-s2.0-85179694738WOS:001125322100001Q3Q2