The properties of a novel complex between pyranine (a photoacid and an electron donor species) and methyl viologen (an efficient electron acceptor, MV+2) in aqueous and in micellar solutions were determined. On the basis of the electrostatic driven force for pyranine/methyl viologen (pyranine/MV2+) complexation, the distribution of the complexant species could be manipulated using ionic micellar aggregates. This distribution permits control over competitive photochemical and photophysical pathways and therefore allowed maximization of electron- and proton-transfer capabilities. Pyranine/MV2+ complexes (for the acid and conjugated base pyranine species) were characterized by UV−Vis and fluorescence titrations. Pyranine/MV2+ photoredox reactions were investigated by monitoring the transients (laser flash photolysis) due to the solvated electron, the reduced (PO-•) and oxidized (PO+•) forms of pyranine, and the semireduced methyl viologen (MV+•). Ionic aqueous micelles (sodium dodecyl sulfate and cetyltrimethylammonium chloride) and anionic reversed micelles (sodium bis(2-ethylhexyl)sulfosuccinate) were used to disassemble the complex by attraction of one of its species by an oppositely charged micellar aggregate. Present findings demonstrate the formation of a complex and its manipulation, which may allow the development of a photocatalyst agent whose properties can be adjusted by the appropriate disposition of the complex partners in supramolecular aggregates.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.