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Magnetically modulated photochemical reaction pathways in anthraquinone molecules and aggregates
The chemical reactions involving excited-state radical pairs (RPs) of parallel/anti-parallel spin configurations are sensitive to magnetic field, leading to the possibilities of magnetically controlled synthesis of chemical compounds. Here we show that the reaction of anthraquinone (AQ) in sodium do...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8169793/ https://www.ncbi.nlm.nih.gov/pubmed/34113816 http://dx.doi.org/10.1016/j.isci.2021.102458 |
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author | Wu, Wubin Yin, Baipeng Peng, Wei Zhao, Yukun Zhou, Zeyang Sheng, Hua Ma, Wanhong Zhang, Chuang |
author_facet | Wu, Wubin Yin, Baipeng Peng, Wei Zhao, Yukun Zhou, Zeyang Sheng, Hua Ma, Wanhong Zhang, Chuang |
author_sort | Wu, Wubin |
collection | PubMed |
description | The chemical reactions involving excited-state radical pairs (RPs) of parallel/anti-parallel spin configurations are sensitive to magnetic field, leading to the possibilities of magnetically controlled synthesis of chemical compounds. Here we show that the reaction of anthraquinone (AQ) in sodium dodecyl sulfate (SDS) micellar solution under UV excitation is significantly influenced by applying external field. The steady state and time-resolved spectroscopies reveal that the reaction intermediate (pairs of AQH-SDS radicals) can undergo two distinct pathways depending on whether it is spin singlet or triplet, and the field is beneficial to the conversion between spin configurations of RPs. The applied field not only affects the reaction rate constant but also changes the final products. Besides, the aggregation of AQ molecules would change the population of singlets and triplets and thus enhance magnetic field effect. This work represents a promising way of controlling chemical reaction and improving reaction selectivity via magnetic field methods. |
format | Online Article Text |
id | pubmed-8169793 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-81697932021-06-09 Magnetically modulated photochemical reaction pathways in anthraquinone molecules and aggregates Wu, Wubin Yin, Baipeng Peng, Wei Zhao, Yukun Zhou, Zeyang Sheng, Hua Ma, Wanhong Zhang, Chuang iScience Article The chemical reactions involving excited-state radical pairs (RPs) of parallel/anti-parallel spin configurations are sensitive to magnetic field, leading to the possibilities of magnetically controlled synthesis of chemical compounds. Here we show that the reaction of anthraquinone (AQ) in sodium dodecyl sulfate (SDS) micellar solution under UV excitation is significantly influenced by applying external field. The steady state and time-resolved spectroscopies reveal that the reaction intermediate (pairs of AQH-SDS radicals) can undergo two distinct pathways depending on whether it is spin singlet or triplet, and the field is beneficial to the conversion between spin configurations of RPs. The applied field not only affects the reaction rate constant but also changes the final products. Besides, the aggregation of AQ molecules would change the population of singlets and triplets and thus enhance magnetic field effect. This work represents a promising way of controlling chemical reaction and improving reaction selectivity via magnetic field methods. Elsevier 2021-04-21 /pmc/articles/PMC8169793/ /pubmed/34113816 http://dx.doi.org/10.1016/j.isci.2021.102458 Text en © 2021 The Authors https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Article Wu, Wubin Yin, Baipeng Peng, Wei Zhao, Yukun Zhou, Zeyang Sheng, Hua Ma, Wanhong Zhang, Chuang Magnetically modulated photochemical reaction pathways in anthraquinone molecules and aggregates |
title | Magnetically modulated photochemical reaction pathways in anthraquinone molecules and aggregates |
title_full | Magnetically modulated photochemical reaction pathways in anthraquinone molecules and aggregates |
title_fullStr | Magnetically modulated photochemical reaction pathways in anthraquinone molecules and aggregates |
title_full_unstemmed | Magnetically modulated photochemical reaction pathways in anthraquinone molecules and aggregates |
title_short | Magnetically modulated photochemical reaction pathways in anthraquinone molecules and aggregates |
title_sort | magnetically modulated photochemical reaction pathways in anthraquinone molecules and aggregates |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8169793/ https://www.ncbi.nlm.nih.gov/pubmed/34113816 http://dx.doi.org/10.1016/j.isci.2021.102458 |
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