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Article: Unprecedentedly Ultrafast Dynamics of Excited States of C═C Photoswitching Molecules in Nanocrystals and Microcrystals

TitleUnprecedentedly Ultrafast Dynamics of Excited States of C═C Photoswitching Molecules in Nanocrystals and Microcrystals
Authors
Issue Date2021
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/loi/jpclcd
Citation
The Journal of Physical Chemistry Letters, 2021, v. 12 n. 1, p. 41-48 How to Cite?
AbstractThe C═C photoswitching molecules [1,2-di(4-pyridyl)ethylene (DPE), 4-styrylpyridine (SP), and trans-1,2-stilbene (TS)] show favorable photoisomerization characteristics. Although the solid states of photoswitching molecules are usually used in optical devices, their excited state’s evolution has been little explored. Here, the excited state’s relaxation of DPE, SP, and TS in nanocrystal/microcrystal suspensions as well as in solution phase was studied to uncover the early events of their excited states. The dynamics of nanocrystal/microcrystal suspensions was tremendously accelerated in comparison to the kinetics obtained in the solution for these molecules under excitation. DPE exhibits the slowest decay rate, while SP shows the fastest decay rate in nanocrystal suspensions or solution, suggesting SP may be the best candidate for the photoswitching device. The intermolecular interactions and space restriction of the crystal lead to the acceleration of the excited state’s evolution for DPE, SP, and TS. This provides new insight into the design of optical materials.
Persistent Identifierhttp://hdl.handle.net/10722/300768
ISSN
2021 Impact Factor: 6.888
2020 SCImago Journal Rankings: 2.563
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorPang, J-
dc.contributor.authorDeng, Z-
dc.contributor.authorSun, S-
dc.contributor.authorHuang, G-
dc.contributor.authorZhang, G-
dc.contributor.authorIslam, A-
dc.contributor.authorDang, L-
dc.contributor.authorPhillips, DL-
dc.contributor.authorLi, MD-
dc.date.accessioned2021-07-06T03:09:58Z-
dc.date.available2021-07-06T03:09:58Z-
dc.date.issued2021-
dc.identifier.citationThe Journal of Physical Chemistry Letters, 2021, v. 12 n. 1, p. 41-48-
dc.identifier.issn1948-7185-
dc.identifier.urihttp://hdl.handle.net/10722/300768-
dc.description.abstractThe C═C photoswitching molecules [1,2-di(4-pyridyl)ethylene (DPE), 4-styrylpyridine (SP), and trans-1,2-stilbene (TS)] show favorable photoisomerization characteristics. Although the solid states of photoswitching molecules are usually used in optical devices, their excited state’s evolution has been little explored. Here, the excited state’s relaxation of DPE, SP, and TS in nanocrystal/microcrystal suspensions as well as in solution phase was studied to uncover the early events of their excited states. The dynamics of nanocrystal/microcrystal suspensions was tremendously accelerated in comparison to the kinetics obtained in the solution for these molecules under excitation. DPE exhibits the slowest decay rate, while SP shows the fastest decay rate in nanocrystal suspensions or solution, suggesting SP may be the best candidate for the photoswitching device. The intermolecular interactions and space restriction of the crystal lead to the acceleration of the excited state’s evolution for DPE, SP, and TS. This provides new insight into the design of optical materials.-
dc.languageeng-
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/loi/jpclcd-
dc.relation.ispartofThe Journal of Physical Chemistry Letters-
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in [JournalTitle], copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [insert ACS Articles on Request author-directed link to Published Work, see http://pubs.acs.org/page/policy/articlesonrequest/index.html].-
dc.titleUnprecedentedly Ultrafast Dynamics of Excited States of C═C Photoswitching Molecules in Nanocrystals and Microcrystals-
dc.typeArticle-
dc.identifier.emailPhillips, DL: phillips@hku.hk-
dc.identifier.authorityPhillips, DL=rp00770-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/acs.jpclett.0c03232-
dc.identifier.pmid33296591-
dc.identifier.scopuseid_2-s2.0-85097733487-
dc.identifier.hkuros323186-
dc.identifier.volume12-
dc.identifier.issue1-
dc.identifier.spage41-
dc.identifier.epage48-
dc.identifier.isiWOS:000667288100001-
dc.publisher.placeUnited States-

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