On the interactions of TEMPO radicals with gold nanostructuresElectronic supplementary information (ESI) available: EPR and UV-vis spectra, as mentioned in the text. See DOI: 10.1039/c7nj04714b

The direct binding of four TEMPO radicals to citrate-coated gold nanoparticles and nanoclusters was investigated by means of EPR, fluorescence spectroscopy, kinetic measurements, TEM imaging and microcalorimetry. Although some degree of binding between TEMPO or 4-hydroxy-TEMPO and gold nanoparticles...

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Bibliographic Details
Main Authors: Aliaga, C, Michea, S, Pastenes, C, Salazar, J, Rezende, M. C
Format: Article
Language:English
Online Access:Get full text
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Summary:The direct binding of four TEMPO radicals to citrate-coated gold nanoparticles and nanoclusters was investigated by means of EPR, fluorescence spectroscopy, kinetic measurements, TEM imaging and microcalorimetry. Although some degree of binding between TEMPO or 4-hydroxy-TEMPO and gold nanoparticles could not be excluded, it was negligible when compared with binding with 4-amino or 4-carboxy-TEMPO, showing that binding takes place exclusively, or almost exclusively, via the 4-amino or 4-carboxy substituent. Nitroxide radicals do not bind with Au nanostructures through the -NO&z.rad; moiety.
ISSN:1144-0546
1369-9261
DOI:10.1039/c7nj04714b