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Article: Ultrafast fluorescent decay induced by metal-mediated dipole–dipole interaction in two-dimensional molecular aggregates

TitleUltrafast fluorescent decay induced by metal-mediated dipole–dipole interaction in two-dimensional molecular aggregates
Authors
KeywordsDipole–dipole interaction
Fluorescence
Molecular aggregate
Nonradiative decay
Surface plasmon
Issue Date2017
PublisherNational Academy of Sciences. The Journal's web site is located at http://www.pnas.org
Citation
Proceedings of the National Academy of Sciences, 2017, v. 114 n. 38, p. 10017-10022 How to Cite?
AbstractTwo-dimensional molecular aggregate (2DMA), a thin sheet of strongly interacting dipole molecules self-assembled at close distance on an ordered lattice, is a fascinating fluorescent material. It is distinctively different from the conventional (single or colloidal) dye molecules and quantum dots. In this paper, we verify that when a 2DMA is placed at a nanometric distance from a metallic substrate, the strong and coherent interaction between the dipoles inside the 2DMA dominates its fluorescent decay at a picosecond timescale. Our streak-camera lifetime measurement and interacting lattice–dipole calculation reveal that the metal-mediated dipole–dipole interaction shortens the fluorescent lifetime to about one-half and increases the energy dissipation rate by 10 times that expected from the noninteracting single-dipole picture. Our finding can enrich our understanding of nanoscale energy transfer in molecular excitonic systems and may designate a unique direction for developing fast and efficient optoelectronic devices. © 2017, National Academy of Sciences. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/257373
ISSN
2017 Impact Factor: 9.504
2015 SCImago Journal Rankings: 6.883
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorHu, Q-
dc.contributor.authorJin, D-
dc.contributor.authorXiao, J-
dc.contributor.authorNam, SH-
dc.contributor.authorLiu, X-
dc.contributor.authorLiu, Y-
dc.contributor.authorZhang, X-
dc.contributor.authorFang, NX-
dc.date.accessioned2018-07-27T08:52:11Z-
dc.date.available2018-07-27T08:52:11Z-
dc.date.issued2017-
dc.identifier.citationProceedings of the National Academy of Sciences, 2017, v. 114 n. 38, p. 10017-10022-
dc.identifier.issn0027-8424-
dc.identifier.urihttp://hdl.handle.net/10722/257373-
dc.description.abstractTwo-dimensional molecular aggregate (2DMA), a thin sheet of strongly interacting dipole molecules self-assembled at close distance on an ordered lattice, is a fascinating fluorescent material. It is distinctively different from the conventional (single or colloidal) dye molecules and quantum dots. In this paper, we verify that when a 2DMA is placed at a nanometric distance from a metallic substrate, the strong and coherent interaction between the dipoles inside the 2DMA dominates its fluorescent decay at a picosecond timescale. Our streak-camera lifetime measurement and interacting lattice–dipole calculation reveal that the metal-mediated dipole–dipole interaction shortens the fluorescent lifetime to about one-half and increases the energy dissipation rate by 10 times that expected from the noninteracting single-dipole picture. Our finding can enrich our understanding of nanoscale energy transfer in molecular excitonic systems and may designate a unique direction for developing fast and efficient optoelectronic devices. © 2017, National Academy of Sciences. All rights reserved.-
dc.languageeng-
dc.publisherNational Academy of Sciences. The Journal's web site is located at http://www.pnas.org-
dc.relation.ispartofProceedings of the National Academy of Sciences-
dc.rightsProceedings of the National Academy of Sciences. Copyright © National Academy of Sciences.-
dc.subjectDipole–dipole interaction-
dc.subjectFluorescence-
dc.subjectMolecular aggregate-
dc.subjectNonradiative decay-
dc.subjectSurface plasmon-
dc.titleUltrafast fluorescent decay induced by metal-mediated dipole–dipole interaction in two-dimensional molecular aggregates-
dc.typeArticle-
dc.identifier.emailZhang, X: president@hku.hk-
dc.identifier.authorityZhang, X=rp02411-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1073/pnas.1703000114-
dc.identifier.scopuseid_2-s2.0-85029570212-
dc.identifier.volume114-
dc.identifier.issue38-
dc.identifier.spage10017-
dc.identifier.epage10022-
dc.identifier.isiWOS:000411157100041-
dc.publisher.placeUnited States-

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