Stretchable Fluorescent Polyurethane Containing Fluorene-Based Trimer for Blue Polymer Light-Emitting Diodes
Intrinsically stretchable materials play a pivotal role in the advancement of flexible electronics. However, simultaneously achieving excellent mechanical stretchability and superior optoelectronic properties in light-emitting polymers remains a formidable challenge. Here, we present a novel fluorescent polyurethane (PU) synthesized by integrating a fluorene-based trimer (TrF) as the hard segment and polydimethylsiloxane (PDMS) as the soft segment. This molecular design imparts the polymer with a maximum elongation at a break of 125%, coupled with efficient deep-blue photoluminescence with a quantum yield of 50.2%. Besides, the interchain hydrogen bonds between urethane groups facilitate polymer solution gelation by forming noncovalent cross-linked networks. Polymer light-emitting diodes (PLEDs) based on this novel polymer were successfully fabricated, demonstrating a turn-on voltage of 3.8 V and a maximum luminance of 120 cd m–2. These results underscore the feasibility of integrating stretchability with optoelectronic functionality, emphasizing the critical balance between the mechanical flexibility and optoelectronic properties.
Authors
- Jinyi Lin (ORCID: https://orcid.org/0000-0002-2607-3633)
- Lubing Bai (ORCID: https://orcid.org/0000-0002-2914-0969)
- Wenchao Zhao (ORCID: https://orcid.org/0000-0001-8717-1774)
- Rui Gao (ORCID: https://orcid.org/0000-0003-0680-4256)
- Zhiqiang Zhuo (ORCID: https://orcid.org/0009-0004-8721-7321)
- Yamin Han (ORCID: https://orcid.org/0000-0001-6079-9748)
- Wei Huang (ORCID: https://orcid.org/0000-0001-7004-6408)
- Lizhi Wang (ORCID: https://orcid.org/0000-0002-2962-9051)
- Ning Sun (ORCID: https://orcid.org/0000-0003-3500-9163)
- Xinyu Liang (ORCID: https://orcid.org/0000-0003-0964-4294)
- Lili Sun (ORCID: https://orcid.org/0000-0003-0483-2704)
- Wenxin Huang (ORCID: https://orcid.org/0009-0009-5072-6719)
- Jing Yang (ORCID: https://orcid.org/0000-0001-9195-9986)
- Xiang An (ORCID: https://orcid.org/0000-0001-9489-0136)
- Yingru Lin (ORCID: https://orcid.org/0000-0003-1868-8926)
- Qingqing Lu
Institutions
- Jiangsu University (CN)
- Nanjing Tech University (CN)
- Sun Yat-sen University (CN)
- Nanjing Forestry University (CN)
- Fudan University (CN)
- Division of Materials Science and Engineering (AU)
Publication Details
- Journal
- Macromolecules
- Published
- 2025-04-09
- DOI
- https://doi.org/10.1021/acs.macromol.5c00447
- Citations
- 1
- Primary Topic
- Conducting polymers and applications
- Type
- article
- Field-Weighted Citation Impact
- 0.61
Funders
- Science and Technology Foundation of Shenzhen City
- National Natural Science Foundation of China
- China Postdoctoral Science Foundation
- Nanjing Tech University
- State Key Laboratory of Molecular Engineering of Polymers
- Senior Talent Foundation of Jiangsu University
- Natural Science Research of Jiangsu Higher Education Institutions of China
- Graduate Research and Innovation Projects of Jiangsu Province
- Natural Science Foundation of Jiangsu Province for Distinguished Young Scholars