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Issue 7, 2017
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Conformation pre-organization in fluorene-based conjugated polymer for simultaneous enhancement of luminescence and charge mobility

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Abstract

Generally in organic electronics, high-mobility organic materials require strong intermolecular interaction for delocalized electrons, while high luminescent efficiency needs localization of excitons. Thus, simultaneous enhancement of luminescent efficiency and charge mobility are theoretically difficult. In this work the simultaneous enhancement was realized by aggregation induced complanation in conformation pre-organization of a fluorene-based copolymer. Polymer chain conformation has been tesitifed as tending to be more planar in a poor solvent induced aggregate than in a good solvent, which is the same as that in an excited and charged state. This complanation effectively decreases conformation relaxation during excitation and charge transfer, which simultaneously enhances emission efficiency and charge mobility, and eventually improves electroluminescent efficiency in the PLED. This result will inspire new ideas for conjugated polymers, especially in processing film fabrication for high efficiency devices.

Graphical abstract: Conformation pre-organization in fluorene-based conjugated polymer for simultaneous enhancement of luminescence and charge mobility

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Article information


Submitted
15 Nov 2016
Accepted
10 Jan 2017
First published
11 Jan 2017

Polym. Chem., 2017,8, 1255-1262
Article type
Paper

Conformation pre-organization in fluorene-based conjugated polymer for simultaneous enhancement of luminescence and charge mobility

J. He, L. Du, C. Wang, M. Jiang, L. Liu, Y. Mo, Z. Xie, B. Yang and Y. Ma, Polym. Chem., 2017, 8, 1255
DOI: 10.1039/C6PY01995A

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