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Periodic fluorescence variations of CdSe quantum dots coupled to aryleneethynylenes with aggregation-induced emission

CdSe nanocrystals and aggregates of an aryleneethynylene derivative are assembled into a hybrid thin film with dual fluorescence from both fluorophores. Under continuous excitation, the nanocrystals and the molecules exhibit anticorrelated fluorescence intensity variations, which become periodic at...

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Hauptverfasser: Kumar, Krishan (VerfasserIn) , Hiller, Jonas (VerfasserIn) , Bender, Markus (VerfasserIn) , Nosrati, Saeed (VerfasserIn) , Liu, Quan (VerfasserIn) , Edelmann, Marc (VerfasserIn) , Maier, Steffen (VerfasserIn) , Rammler, Tim (VerfasserIn) , Wackenhut, Frank (VerfasserIn) , Meixner, Alfred J. (VerfasserIn) , Braun, Kai (VerfasserIn) , Bunz, Uwe H. F. (VerfasserIn) , Scheele, Marcus (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: January 13, 2021
In: ACS nano
Year: 2021, Jahrgang: 15, Heft: 1, Pages: 480-488
ISSN:1936-086X
DOI:10.1021/acsnano.0c05121
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/acsnano.0c05121
Volltext
Verfasserangaben:Krishan Kumar, Jonas Hiller, Markus Bender, Saeed Nosrati, Quan Liu, Marc Edelmann, Steffen Maier, Tim Rammler, Frank Wackenhut, Alfred J. Meixner, Kai Braun, Uwe H.F. Bunz, and Marcus Scheele
Beschreibung
Zusammenfassung:CdSe nanocrystals and aggregates of an aryleneethynylene derivative are assembled into a hybrid thin film with dual fluorescence from both fluorophores. Under continuous excitation, the nanocrystals and the molecules exhibit anticorrelated fluorescence intensity variations, which become periodic at low temperature. We attribute this to a structure-dependent aggregation-induced emission of the aryleneethynylene derivative, which impacts the rate of excitation energy transfer between the molecules and nanocrystals. This work highlights that combining semiconductor nanocrystals with molecular aggregates, which exhibit aggregation-induced emission, can result in emerging optical properties.
Beschreibung:Gesehen am 22.07.2021
Beschreibung:Online Resource
ISSN:1936-086X
DOI:10.1021/acsnano.0c05121

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