Volume 133, Issue 11 pp. 5891-5896
Zuschrift

Long-Range Exciton Migration in Coassemblies: Achieving High Photostability without Disrupting the Electron Donation of Fluorene Oligomers

Chuanqin Cheng

Chuanqin Cheng

CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

University of Chinese Academy of Sciences, Beijing, 100049 China

These authors contributed equally to this work.

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Yanjun Gong

Yanjun Gong

CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

University of Chinese Academy of Sciences, Beijing, 100049 China

These authors contributed equally to this work.

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Yongxian Guo

Yongxian Guo

CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

University of Chinese Academy of Sciences, Beijing, 100049 China

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Linfeng Cui

Linfeng Cui

CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

University of Chinese Academy of Sciences, Beijing, 100049 China

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Prof. Dr. Hongwei Ji

Prof. Dr. Hongwei Ji

CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

University of Chinese Academy of Sciences, Beijing, 100049 China

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Prof. Dr. Hong Yuan

Corresponding Author

Prof. Dr. Hong Yuan

Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, 430079 China

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Prof. Dr. Lang Jiang

Corresponding Author

Prof. Dr. Lang Jiang

CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

University of Chinese Academy of Sciences, Beijing, 100049 China

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Prof. Dr. Jincai Zhao

Prof. Dr. Jincai Zhao

CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

University of Chinese Academy of Sciences, Beijing, 100049 China

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Prof. Dr. Yanke Che

Corresponding Author

Prof. Dr. Yanke Che

CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

University of Chinese Academy of Sciences, Beijing, 100049 China

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First published: 16 December 2020

Abstract

In this work, photostable coassemblies from a nonphotostable fluorene oligomer (the energy donor) and a photostable oligomer (the energy acceptor) are fabricated. Long-range exciton migration over a net distance of about 370 energy-donor molecules to energy acceptors is demonstrated in such coassemblies. The fast and long energy migration allows harvesting of the excitation energy of energy donors by embedding a small number of energy acceptors for photostability enhancement. Importantly, embedding a small number of energy acceptors in coassemblies causes a negligible negative influence on the electron donation of energy donors that are desired in practical applications. The advantages of the coassemblies fabricated, that is, high photostability without disrupting the electron donation of energy donors, are well illustrated in fluorescence detection of trace explosives where prolonged working life and improved detection capacity are achieved.

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