Beilstein Arch. 2021, 202160. https://doi.org/10.3762/bxiv.2021.60.v1
Published 23 Aug 2021
A new series of ten examples of (E)-2-(((2-alkyl(aryl/heteroaryl)-4-(trifluoromethyl)quinolin-6-yl)imino)methyl)phenols (Schiff bases), was easy synthesized at yields up to 91% from the reactions involving a series of 2-(R-substituted) 6-amino-4-(trifluoromethyl)quinolines and 4(5)-R1-substituted salicylaldehydes – in which alkyl/aryl/heteroaryl for 2-(R)-substituents are Me, Ph, 4-MeC6H4, 4-FC6H4, 4-NO2C6H4, and 2-furyl, and (R1)-substituents are 5-NEt2, 5-OCH3, 4-Br, and 4-NO2. Complementarily, the Schiff bases showed low to good quantum fluorescence yield values both in CHCl3 (Φf = 0.12-0.80), DMSO (Φf = 0.20-0.75) and MeOH (Φf = 0.13-0.85). Higher values of Stokes shifts (SS) were observed in more polar solvents (DMSO; 65-150 nm and MeOH; 65-130 nm) than in CHCl3 (59-85 nm). Also, compounds 3 confirmed to present good stability under white-LED irradiation conditions and moderate ROS generation properties were observed.
Keywords: Schiff base, quinoline, photophysical properties, photostability, ROS generation.
|Format: PDF||Size: 5.9 MB||Download|
When a peer-reviewed version of this preprint is available, this information will be updated in the information box above. If no peer-reviewed version is available, please cite this preprint using the following information:
Rocha, I. O.; Kappenberg, Y. G.; Rosa, W. C.; Frizzo, C. P.; Zanatta, N.; Martins, M. A. P.; Tisoco, I.; Iglesias, B. A.; Bonacorso, H. G. Beilstein Arch. 2021, 202160. doi:10.3762/bxiv.2021.60.v1
|Download RIS (Reference Manager)||Download BIB (BIBTEX)|
© 2021 Rocha et al.; licensee Beilstein-Institut.
This is an open access work under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0). Please note that the reuse, redistribution and reproduction in particular requires that the author(s) and source are credited and that individual graphics may be subject to special legal provisions.
The license is subject to the Beilstein Archives terms and conditions: (https://www.beilstein-archives.org/xiv/terms)