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Dual-Phase Thermally Activated Delayed Fluorescence Luminogens: A Material for Time-Resolved Imaging Independent of Probe Pretreatment and Probe Concentration
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Theoretical Chemistry and Biology.ORCID iD: 0000-0002-0716-3385
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2020 (English)In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 59, no 19, p. 7548-7554Article in journal (Refereed) Published
Abstract [en]

Developing luminescent probes with long lifetime and high emission efficiency is essential for time-resolved imaging. However, the practical applications usually suffer from emission quenching of traditional luminogens in aggregated states, or from weak emission of aggregation-induced emission type luminogens in monomeric states. Herein, we overcome this dilemma by a rigid-and-flexible alternation design in donor–acceptor–donor skeletons, to achieve a thermally activated delayed fluorescence luminogen with high emission efficiency both in the monomeric state (quantum yield up to 35.3 %) and in the aggregated state (quantum yield up to 30.8 %). Such a dual-phase strong and long-lived emission allows a time-resolved luminescence imaging, with an efficiency independent of probe pretreatment and probe concentration. The findings open opportunities for developing luminescent probes with a usage in larger temporal and spatial scales.

Place, publisher, year, edition, pages
Wiley-VCH Verlagsgesellschaft, 2020. Vol. 59, no 19, p. 7548-7554
Keywords [en]
dual-phase emission, imaging agents, luminescence, self-assembly, thermally activated delayed fluorescence
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-276405DOI: 10.1002/anie.202000185ISI: 000519384800001PubMedID: 32073698Scopus ID: 2-s2.0-85081958443OAI: oai:DiVA.org:kth-276405DiVA, id: diva2:1444549
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QC 20200622

Available from: 2020-06-22 Created: 2020-06-22 Last updated: 2022-06-26Bibliographically approved

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Baryshnikov, Gleb V.Li, XinÅgren, Hans

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  • de-DE
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