Intrinsically Stretchable and Efficient Fully Π-Conjugated Polymer via Internal Plasticization for Flexible Deep-Blue Polymer Light-Emitting Diodes with CIEy = 0.08

Intrinsically Stretchable and Efficient Fully Π-Conjugated Polymer via Internal Plasticization for Flexible Deep-Blue Polymer Light-Emitting Diodes with CIEy = 0.08

© 2023 Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 35(2023), 40 vom: 26. Okt., Seite e2303923
1. Verfasser: Zhuo, Zhiqiang (VerfasserIn)
Weitere Verfasser: Ni, Mingjian, An, Xiang, Bai, Lubing, Liang, Xinyu, Yang, Jing, Zheng, Yingying, Liu, Bin, Sun, Ning, Sun, Lili, Wei, Chuanxin, Yu, Ningning, Chen, Wenyu, Li, Mengyuan, Xu, Man, Lin, Jinyi, Huang, Wei
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article deep-blue polymer light-emitting diodes internal plasticization strategy intrinsically stretchable π-conjugated polymers strain tolerance capacity stretchable electroluminescent films
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520 |a Intrinsically stretchable polymeric semiconductors are essential to flexible polymer light-emitting diodes (PLEDs) owing to their excellent strain tolerance capacity under long-time deformation operation. Obtaining intrinsic stretchability, robust emission properties, and excellent charge-transport behavior simultaneously from fully π-conjugated polymers (FCPs) is difficult, particularly for applications in deep-blue PLEDs. Herein, an internal plasticization strategy is proposed to introduce a phenyl-ester plasticizer into polyfluorenes (PF-MC4, PF-MC6, and PF-MC8) for narrowband deep-blue flexible PLEDs. Compared with controlled poly[4-(octyloxy)-9,9-diphenylfluoren-2,7-diyl]-co-[5-(octyloxy)-9,9-diphenylfluoren-2,7-diyl] (PODPFs) (2.5%), the freestanding PF-MC8 thin film shows a fracture strain of >25%. The three stretchable films exhibit stable and efficient deep-blue emission (PLQY > 50%) because of the encapsulation of π-conjugated backbone via pendant phenyl-ester plasticizers. The PF-MC8-based PLEDs show deep-blue emission, which corresponds to CIE and EQE values of (0.16, 0.10) and 1.06%, respectively. Finally, the narrowband deep-blue electroluminescence (FWHM of ≈25 nm; CIE coordinates: (0.15, 0.08)) and performance of the transferred PLEDs based on the PF-MC8 stretchable film are independent of the tensile ratio (up to 45%); however, they show a maximum brightness of 1976 cd m-2 at a ratio of 35%. Therefore, internal plasticization is a promising approach for designing intrinsically stretchable FCPs for flexible electronics 
650 4 |a Journal Article 
650 4 |a deep-blue polymer light-emitting diodes 
650 4 |a internal plasticization strategy 
650 4 |a intrinsically stretchable π-conjugated polymers 
650 4 |a strain tolerance capacity 
650 4 |a stretchable electroluminescent films 
700 1 |a Ni, Mingjian  |e verfasserin  |4 aut 
700 1 |a An, Xiang  |e verfasserin  |4 aut 
700 1 |a Bai, Lubing  |e verfasserin  |4 aut 
700 1 |a Liang, Xinyu  |e verfasserin  |4 aut 
700 1 |a Yang, Jing  |e verfasserin  |4 aut 
700 1 |a Zheng, Yingying  |e verfasserin  |4 aut 
700 1 |a Liu, Bin  |e verfasserin  |4 aut 
700 1 |a Sun, Ning  |e verfasserin  |4 aut 
700 1 |a Sun, Lili  |e verfasserin  |4 aut 
700 1 |a Wei, Chuanxin  |e verfasserin  |4 aut 
700 1 |a Yu, Ningning  |e verfasserin  |4 aut 
700 1 |a Chen, Wenyu  |e verfasserin  |4 aut 
700 1 |a Li, Mengyuan  |e verfasserin  |4 aut 
700 1 |a Xu, Man  |e verfasserin  |4 aut 
700 1 |a Lin, Jinyi  |e verfasserin  |4 aut 
700 1 |a Huang, Wei  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Advanced materials (Deerfield Beach, Fla.)  |d 1998  |g 35(2023), 40 vom: 26. Okt., Seite e2303923  |w (DE-627)NLM098206397  |x 1521-4095  |7 nnns 
773 1 8 |g volume:35  |g year:2023  |g number:40  |g day:26  |g month:10  |g pages:e2303923 
856 4 0 |u http://dx.doi.org/10.1002/adma.202303923  |3 Volltext 
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