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Experimental demonstration of pH-dependent electrostatic catalysis of radical reactions

Klinska, Marta; Smith, Leesa; Gryn'ova, Ganna; Banwell, Martin; Coote, Michelle


Time-dependent fluorescence spectroscopy has been used to demonstrate significant pH-dependent electrostatic effects on the kinetics and thermodynamics of hydrogen atom transfer between 1-hydroxy-2,2,6,6-tetramethyl-4-piperidinecarboxylic acid (4-CT-H) and the profluorescent nitroxide {2,2,6,6-tetramethyl-4-[(7-nitro-2,1,3-benzoxadiazol-4-yl)amino]-1-piperidinyl}oxidanyl radical (PFN) in dichloromethane. This pH switching does not occur when 4-CT-H is replaced with a structurally analogous...[Show more]

CollectionsANU Research Publications
Date published: 2015
Type: Journal article
Source: Chemical Science
DOI: 10.1039/c5sc01307k
Access Rights: Open Access


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