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Article: Ultralong UV/mechano-excited room temperature phosphorescence from purely organic cluster excitons

TitleUltralong UV/mechano-excited room temperature phosphorescence from purely organic cluster excitons
Authors
Keywordscolumn chromatography
crystal structure
crystallization
energy transfer
fluorescence
Issue Date2019
PublisherNature Research (part of Springer Nature): Fully open access journals. The Journal's web site is located at http://www.nature.com/ncomms/index.html
Citation
Nature Communications, 2019, v. 10, p. article no. 5161 How to Cite?
AbstractPurely organic room temperature phosphorescence (RTP) has attracted wide attention recently due to its various application potentials. However, ultralong RTP (URTP) with high efficiency is still rarely achieved. Herein, by dissolving 1,8-naphthalic anhydride in certain organic solid hosts, URTP with a lifetime of over 600 ms and overall quantum yield of over 20% is realized. Meanwhile, the URTP can also be achieved by mechanical excitation when the host is mechanoluminescent. Femtosecond transient absorption studies reveal that intersystem crossing of the host is accelerated substantially in the presence of a trace amount of 1,8-naphthalic anhydride. Accordingly, we propose that a cluster exciton spanning the host and guest forms as a transient state before the guest acts as an energy trap for the RTP state. The cluster exciton model proposed here is expected to help expand the varieties of purely organic URTP materials based on an advanced understanding of guest/host combinations.
Persistent Identifierhttp://hdl.handle.net/10722/286172
ISSN
2020 Impact Factor: 14.919
2020 SCImago Journal Rankings: 5.559
PubMed Central ID
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhang, XP-
dc.contributor.authorDu, L-
dc.contributor.authorZhao, WJ-
dc.contributor.authorZhao, Z-
dc.contributor.authorXiong, Y-
dc.contributor.authorHe, X-
dc.contributor.authorGao, PF-
dc.contributor.authorAlam, P-
dc.contributor.authorWang, C-
dc.contributor.authorLi, Z-
dc.contributor.authorLeng, J-
dc.contributor.authorLiu, J-
dc.contributor.authorZhao, C-
dc.contributor.authorLam, JWY-
dc.contributor.authorPhillips, DL-
dc.contributor.authorZhang, G-
dc.contributor.authorTang, BZ-
dc.date.accessioned2020-08-31T07:00:09Z-
dc.date.available2020-08-31T07:00:09Z-
dc.date.issued2019-
dc.identifier.citationNature Communications, 2019, v. 10, p. article no. 5161-
dc.identifier.issn2041-1723-
dc.identifier.urihttp://hdl.handle.net/10722/286172-
dc.description.abstractPurely organic room temperature phosphorescence (RTP) has attracted wide attention recently due to its various application potentials. However, ultralong RTP (URTP) with high efficiency is still rarely achieved. Herein, by dissolving 1,8-naphthalic anhydride in certain organic solid hosts, URTP with a lifetime of over 600 ms and overall quantum yield of over 20% is realized. Meanwhile, the URTP can also be achieved by mechanical excitation when the host is mechanoluminescent. Femtosecond transient absorption studies reveal that intersystem crossing of the host is accelerated substantially in the presence of a trace amount of 1,8-naphthalic anhydride. Accordingly, we propose that a cluster exciton spanning the host and guest forms as a transient state before the guest acts as an energy trap for the RTP state. The cluster exciton model proposed here is expected to help expand the varieties of purely organic URTP materials based on an advanced understanding of guest/host combinations.-
dc.languageeng-
dc.publisherNature Research (part of Springer Nature): Fully open access journals. The Journal's web site is located at http://www.nature.com/ncomms/index.html-
dc.relation.ispartofNature Communications-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectcolumn chromatography-
dc.subjectcrystal structure-
dc.subjectcrystallization-
dc.subjectenergy transfer-
dc.subjectfluorescence-
dc.titleUltralong UV/mechano-excited room temperature phosphorescence from purely organic cluster excitons-
dc.typeArticle-
dc.identifier.emailDu, L: ailleen@hku.hk-
dc.identifier.emailPhillips, DL: phillips@hku.hk-
dc.identifier.authorityPhillips, DL=rp00770-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1038/s41467-019-13048-x-
dc.identifier.pmid31727890-
dc.identifier.pmcidPMC6856348-
dc.identifier.scopuseid_2-s2.0-85075035797-
dc.identifier.hkuros313831-
dc.identifier.volume10-
dc.identifier.spagearticle no. 5161-
dc.identifier.epagearticle no. 5161-
dc.identifier.isiWOS:000496409800009-
dc.publisher.placeUnited Kingdom-
dc.identifier.issnl2041-1723-

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