Packing Adjustment Towards High Mobility Luminescent Conjugated Polymers

doi:10.1007/s40242-023-3180-4

Chemical Research in Chinese Universities ›› 2023, Vol. 39 ›› Issue (5): 731-735.doi: 10.1007/s40242-023-3180-4

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Packing Adjustment Towards High Mobility Luminescent Conjugated Polymers

ZHANG Yihan^1,2, LIU Qingqing^1,2, GAO Can¹, XIE Ziyi^1,2, HU Beining^1,3, DONG Huanli^1,2

1. Beijing National Laboratory for Molecular Science, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China;
2. Department of Chemistry, University of Chinese Academy of Sciences, Beijing 100049, P. R. China;
3. School of Life Science, Inner Mongolia University, Hohhot 010020, P. R. China

Received:2023-08-02 Online:2023-10-01 Published:2023-09-26
Contact: DONG Huanli, GAO Can E-mail:dhl522@iccas.ac.cn;cangao@iccas.ac.cn
Supported by:
This work was supported by the Project of the Ministry of Science and Technology of China (Nos.2022YFB3603800, 2018YFA0703200), the National Natural Science Foundation of China (Nos.52233010, 51725304, 61890943, 52103245, 22021002), and the CAS Project for Young Scientists in Basic Research, China (No.YSBR-053).

Abstract

Abstract: Next generation display and lighting technology calls for thinner, cheaper and more-flexible unit devices. Polymer light emitting transistor (PLET), which integrates logic function of organic field effect transistor (OFET), luminescence function of organic light emitting diode (OLED), and potential mechanical properties, is believed to be the raising star in this field. However, great challenges remain in developing the core materials of PLETs, which simultaneously require the integration of high ambipolar mobility and strong solid-state luminescence properties. Herein, high mobility luminescent thienopyrroledione-benzodiathiadiazole-fluorene-based conjugated polymer was chosen as polymer backbone, and polymers TBT-1 and TBT-2 (TBT=thienopyrroledione-benzodiathiadiazole-thienopyrrole-dione) with red luminescence were obtained by direct arylation polymerization (DArP). By introducing linear alkyl side chains, the packing orientation is changed from face-on in TBT-1 thin film to edge-on in TBT-2 thin film, which is beneficial for improving the field effect performance. The average hole and electron mobility of TBT-2 are 1.1×10^-2 and 2.0×10^-3 cm²·V^-1·s^-1, respectively. This work provides new design strategy for high mobility luminescent conjugated polymers, which can be used in PLETs.

Key words: Polymer light emitting transistor, Strong solid-state emission, High ambipolar mobility, Side-chain engineering, Packing adjustment

ZHANG Yihan, LIU Qingqing, GAO Can, XIE Ziyi, HU Beining, DONG Huanli. Packing Adjustment Towards High Mobility Luminescent Conjugated Polymers[J]. Chemical Research in Chinese Universities, 2023, 39(5): 731-735.

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Packing Adjustment Towards High Mobility Luminescent Conjugated Polymers

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