Enhancement of Paramagnetic Relaxation by Photoexcited Gold Nanorods

Electron spin resonance (ESR) spectroscopy was used to investigate the switchable, light-dependent effects of gold nanorods (GNRs) on paramagnetic properties of nitroxide spin probes. The photoexcited GNRs enhanced the spin-spin and spin-lattice relaxations of nitroxide spin probes. It was shown tha...

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Autores principales: Wen, Tao, Wamer, Wayne G., Subczynski, Witold K., Hou, Shuai, Wu, Xiaochun, Yin, Jun-Jie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4829829/
https://www.ncbi.nlm.nih.gov/pubmed/27071507
http://dx.doi.org/10.1038/srep24101
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author Wen, Tao
Wamer, Wayne G.
Subczynski, Witold K.
Hou, Shuai
Wu, Xiaochun
Yin, Jun-Jie
author_facet Wen, Tao
Wamer, Wayne G.
Subczynski, Witold K.
Hou, Shuai
Wu, Xiaochun
Yin, Jun-Jie
author_sort Wen, Tao
collection PubMed
description Electron spin resonance (ESR) spectroscopy was used to investigate the switchable, light-dependent effects of gold nanorods (GNRs) on paramagnetic properties of nitroxide spin probes. The photoexcited GNRs enhanced the spin-spin and spin-lattice relaxations of nitroxide spin probes. It was shown that molecular oxygen plays the key role in this process. Our results demonstrate that ESR is a powerful tool for investigating the events following photoexcitation of GNRs. The novel light-controlled effects observed for GNRs on paramagnetic properties and activities of surrounding molecules have a number of significant applications where oxygen sensing and oxygen activity is important.
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spelling pubmed-48298292016-04-19 Enhancement of Paramagnetic Relaxation by Photoexcited Gold Nanorods Wen, Tao Wamer, Wayne G. Subczynski, Witold K. Hou, Shuai Wu, Xiaochun Yin, Jun-Jie Sci Rep Article Electron spin resonance (ESR) spectroscopy was used to investigate the switchable, light-dependent effects of gold nanorods (GNRs) on paramagnetic properties of nitroxide spin probes. The photoexcited GNRs enhanced the spin-spin and spin-lattice relaxations of nitroxide spin probes. It was shown that molecular oxygen plays the key role in this process. Our results demonstrate that ESR is a powerful tool for investigating the events following photoexcitation of GNRs. The novel light-controlled effects observed for GNRs on paramagnetic properties and activities of surrounding molecules have a number of significant applications where oxygen sensing and oxygen activity is important. Nature Publishing Group 2016-04-13 /pmc/articles/PMC4829829/ /pubmed/27071507 http://dx.doi.org/10.1038/srep24101 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Wen, Tao
Wamer, Wayne G.
Subczynski, Witold K.
Hou, Shuai
Wu, Xiaochun
Yin, Jun-Jie
Enhancement of Paramagnetic Relaxation by Photoexcited Gold Nanorods
title Enhancement of Paramagnetic Relaxation by Photoexcited Gold Nanorods
title_full Enhancement of Paramagnetic Relaxation by Photoexcited Gold Nanorods
title_fullStr Enhancement of Paramagnetic Relaxation by Photoexcited Gold Nanorods
title_full_unstemmed Enhancement of Paramagnetic Relaxation by Photoexcited Gold Nanorods
title_short Enhancement of Paramagnetic Relaxation by Photoexcited Gold Nanorods
title_sort enhancement of paramagnetic relaxation by photoexcited gold nanorods
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4829829/
https://www.ncbi.nlm.nih.gov/pubmed/27071507
http://dx.doi.org/10.1038/srep24101
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