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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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
January 13, 2021
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| In: |
ACS nano
Year: 2021, Volume: 15, Issue: 1, Pages: 480-488 |
| ISSN: | 1936-086X |
| DOI: | 10.1021/acsnano.0c05121 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/acsnano.0c05121
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| Author Notes: | 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 |
| Summary: | 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. |
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| Item Description: | Gesehen am 22.07.2021 |
| Physical Description: | Online Resource |
| ISSN: | 1936-086X |
| DOI: | 10.1021/acsnano.0c05121 |