10.1021/jo502244j.s001 Borys Ośmiałowski Borys Ośmiałowski Anna Zakrzewska Anna Zakrzewska Beata Jędrzejewska Beata Jędrzejewska Anna Grabarz Anna Grabarz Robert Zaleśny Robert Zaleśny Wojciech Bartkowiak Wojciech Bartkowiak Erkki Kolehmainen Erkki Kolehmainen Influence of Substituent and Benzoannulation on Photophysical Properties of 1‑Benzoylmethyleneisoquinoline Difluoroborates American Chemical Society 2015 photophysical properties quinoline fluorescence quantum yields 2015-02-20 00:00:00 Journal contribution https://acs.figshare.com/articles/journal_contribution/Influence_of_Substituent_and_Benzoannulation_on_Photophysical_Properties_of_1_Benzoylmethyleneisoquinoline_Difluoroborates/2193865 A series of 1-benzoylmethyleneisoquinoline difluoroborates were synthesized, and their photophysical properties were determined. The effect of the substituent and benzoannulation on their properties was investigated to make a comparison with recently published results focused on related quinolines. The photophysical properties of isoquinoline derivatives differ from those of quinolines, and the most pronounced differences are found for the fluorescence quantum yields. Both experimental and theoretical approaches were used to explain the observed photophysical properties.