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Photophysical and electrochemical properties of meso-tetrathien-2′-yl porphyrins compared to meso-tetraphenylporphyrin

O’Neill, Jessica S., Boyle, Nicola M., Marques Passos, Thayse, Heintz, Katharina, Browne, Wesley R. ORCID: 0000-0001-5063-6961, Quilty, Brid ORCID: 0000-0002-0786-3584 and Pryce, Mary ORCID: 0000-0003-2270-2452 (2023) Photophysical and electrochemical properties of meso-tetrathien-2′-yl porphyrins compared to meso-tetraphenylporphyrin. Journal of Photochemistry & Photobiology, A: Chemistry, 438 . ISSN 1010-6030

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Abstract

A series of novel tetra-meso-thien-2-yl porphyrins were synthesised, and the effect of the variation in the thienyl group on the photophysical properties were studied. Ground and excited state UV–vis absorption, steady-state and time-resolved emission, resonance Raman spectroscopy, and cyclic voltammetry, were used to establish the extent of electronic communication between the central Zn(II) porphyrin ring and the various meso-substituent groups. The properties of these novel thienyl porphyrins were compared to zinc tetraphenylporphyrin (ZnTPP), to elucidate the effect of the position and number of thienyl rings. The photochemically-driven antimicrobial activity of zinc(II)-5,10,15,20-tetra(thien-2′ -yl)porphyrin (ZnThPP) as a coating, was established against both Gram-positive and Gram-negative bacteria, and compared to ZnTPP. Visible irradiation of the porphyrins results in a significant antimicrobial response.

Item Type:Article (Published)
Refereed:Yes
Additional Information:Article number: 119
Uncontrolled Keywords:Porphyrin; Thiophene; Photophysical; Electrochemistry; Raman; Singlet oxygen; Antimicrobial
Subjects:Biological Sciences > Biochemistry
Physical Sciences > Chemistry
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Science and Health > School of Biotechnology
DCU Faculties and Schools > Faculty of Science and Health > School of Chemical Sciences
Publisher:Elsevier
Official URL:https://doi.org/10.1016/j.jphotochem.2023.114573
Copyright Information:© 2023 The Authors.
ID Code:28078
Deposited On:16 Feb 2023 15:47 by Thomas Murtagh . Last Modified 16 Feb 2023 15:47

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