Cargando…

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...

Descripción completa

Detalles Bibliográficos
Autores principales: Wu, Wubin, Yin, Baipeng, Peng, Wei, Zhao, Yukun, Zhou, Zeyang, Sheng, Hua, Ma, Wanhong, Zhang, Chuang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2021
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
_version_ 1783702101658959872
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
work_keys_str_mv AT wuwubin magneticallymodulatedphotochemicalreactionpathwaysinanthraquinonemoleculesandaggregates
AT yinbaipeng magneticallymodulatedphotochemicalreactionpathwaysinanthraquinonemoleculesandaggregates
AT pengwei magneticallymodulatedphotochemicalreactionpathwaysinanthraquinonemoleculesandaggregates
AT zhaoyukun magneticallymodulatedphotochemicalreactionpathwaysinanthraquinonemoleculesandaggregates
AT zhouzeyang magneticallymodulatedphotochemicalreactionpathwaysinanthraquinonemoleculesandaggregates
AT shenghua magneticallymodulatedphotochemicalreactionpathwaysinanthraquinonemoleculesandaggregates
AT mawanhong magneticallymodulatedphotochemicalreactionpathwaysinanthraquinonemoleculesandaggregates
AT zhangchuang magneticallymodulatedphotochemicalreactionpathwaysinanthraquinonemoleculesandaggregates