Exciton behavior is crucial for improving the optoelectronic property of a light-emitting conjugated polymer. Herein, the photoexcitation dynamics of exciton migration and energy transfer in a self-doped β-conformation film of the polydiarylfluorenes (poly[4-(octyloxy)-9,9-diphenylfluoren-2,7-diyl]-co-[5-(octyloxy)-9,9- diphenylfluoren-2,7-diyl], PODPF) are demonstrated. Compared to the first generation of the β-conformation polyfluorene, poly(9,9-dioctylfluorene) (PFO), energy transfer occurs in PODPF β-conformation films in a time period of ≈150 ps, much longer than those of the PFO ones (
Bibliographical noteKAUST Repository Item: Exported on 2021-10-26
Acknowledgements: M.X. and L.S. contributed equally to this work. The work was supported by the National Natural Science Foundation of China (22075136, 61874053), National Key Research and Development Program of China (2020YFA0709900), Natural Science Funds of the Education Committee of Jiangsu Province (18KJA430009), Natural Science Foundation of Jiangsu Province (BK20200700), “High-Level Talents in Six Industries” of Jiangsu Province (XYDXX-019), Research Innovation in University of Jiangsu Province (KYCX21_0771), the open research fund from State Key Laboratory of Supramolecular Structure, Materials (sklssm202108) and Anhui Province Key Laboratory of Environment-friendly Polymer Materials and and Anhui Province Key Laboratory of Optoelectronic Materials Science and Technology. N.C. received support from an EPSRC Doctoral Training Studentship at the Centre for Plastic Electronics at Imperial College London.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics