2026-05-13T14:19:23Z https://www.eurjchem.com/index.php/eurjchem/oai

oai:ojs.www.eurjchem.com:article/1634 2018-03-11T13:45:35Z eurjchem:ART driver

Synthesis and properties of 3-ethynylthiophene containing BODIPY derivatives Warshawsky, Reuben Vaal, Jason Hewavitharanage, Priya BODIPY Thiophene Stokes shift Fluorescence Singlet oxygen Photodynamic therapy Green, red and far-red emitting Borondipyrromethene (BODIPY) derivatives with 3-ethynylthiophene units at various positions around the BODIPY core were synthesized and their photophysical properties were studied. 3-Ethynylthiophene substitution at the 2,6 positions caused significant increase in Stokes shift while substitution at the 8 and 4,4’ positions had no effect. Photooxidation of 1,3-diphenylisobenzofuran (DPBF) in the presence of 3-ethynylthiophene substituted BODIPY derivatives confirmed singlet oxygen generation. 3-Ethynylthiophene substitution at the 2,6 positions is more effective in singlet oxygen generation compared to 4’4 substitutions. Substitution through phenyl group at the meso (8) position gave the lowest rate for singlet oxygen production. All 3-ethynylthiophene containing BODIPY derivatives were highly photo-stable under our experimental conditions. Atlanta Publishing House LLC 2017-12-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://www.eurjchem.com/index.php/eurjchem/article/view/1634 10.5155/eurjchem.8.4.321-327.1634 European Journal of Chemistry; Vol. 8 No. 4 (2017): December 2017; 321-327 2153-2257 2153-2249 eng https://www.eurjchem.com/index.php/eurjchem/article/view/1634/pdf_1634