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A three-dimensional ratiometric sensing strategy on unimolecular fluorescence-thermally activated delayed fluorescence dual emission
Fudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200438, Peoples R China..
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Theoretical Chemistry and Biology.ORCID iD: 0000-0002-0716-3385
Zhejiang Univ, Dept Polymer Sci & Engn, MOE Key Lab Macromol Synth & Functionalizat, Hangzhou 310027, Zhejiang, Peoples R China..
Fudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200438, Peoples R China..
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2019 (English)In: Nature Communications, ISSN 2041-1723, E-ISSN 2041-1723, Vol. 10, article id 731Article in journal (Refereed) Published
Abstract [en]

Visualized sensing through fluorescence signals is a powerful method for chemical and physical detection. However, the utilization of fluorescent molecular probes still suffers from lack of precise signal self-calibration in practical use. Here we show that fluorescence and thermally activated delayed fluorescence can be simultaneously produced at the single-molecular level. The thermally activated delayed fluorescence serves as a sensing signal with its wavelength and lifetime both altered correlating to polarity, whereas the fluorescence always remains unchanged as an internal reference. Upon the establishment of a three-dimensional working curve upon the ratiometric wavelength and photoluminescence lifetime vs. polarity, disturbance factors during a relevant sensing process can be largely minimized by such a multiple self-calibration. This strategy was further applied into a precise detection of the microenvironmental polarity variation in complex phospholipid systems, towards providing new insights for convenient and accurate diagnosis of membrane lesions.

Place, publisher, year, edition, pages
NATURE PUBLISHING GROUP , 2019. Vol. 10, article id 731
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Atom and Molecular Physics and Optics
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URN: urn:nbn:se:kth:diva-245138DOI: 10.1038/s41467-019-08684-2ISI: 000458567500011PubMedID: 30760723Scopus ID: 2-s2.0-85061511851OAI: oai:DiVA.org:kth-245138DiVA, id: diva2:1296003
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QC 20190313

Available from: 2019-03-13 Created: 2019-03-13 Last updated: 2019-06-11Bibliographically approved

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Baryshnikov, Gleb V.Ågren, Hans

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