中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Innovative Polyimide Modifications for Aerospace and Optoelectronic Applications: Synergistic Enhancements in Thermal, Mechanical, and Optical Properties

文献类型:期刊论文

作者Chen YW(陈钰玮)1; Liu YD(刘屹东)2,3; Min, Yonggang1
刊名ACS APPLIED MATERIALS & INTERFACES
出版日期2025-02-01
卷号17期号:10页码:16016-16026
关键词twisted biphenyl structure polyimide densityfunctional theory thermal stability photoluminescence
ISSN号1944-8244
DOI10.1021/acsami.4c21102
英文摘要This study pioneers a molecular topology engineering strategy by incorporating a twisted diamine motif into polyimide (PI) backbones, achieving an unprecedented integration of thermal stability, mechanical robustness, and optoelectronic functionality that surpasses conventional high-performance PIs. Unlike traditional PIs constrained by performance trade-offs (e.g., compromised flexibility for thermal resistance or sacrificed bulk properties for functionalization), the modified PI demonstrates a breakthrough balance: thermal degradation temperature (T5%) exceeding 560 degrees C, glass transition temperature (Tg) of 380 degrees C, and tensile strength of 160-180 MPa. Crucially, it exhibits green fluorescence (505-515 nm) under 365/467 nm excitation-a previously unreported optical capability in PIs. Molecular dynamics/density functional theory (MD/DFT) simulations coupled with UV-vis and mechanical analyses reveal that the twisted conformation induces molecular orbital reorganization and optimized stress distribution, establishing a design framework for multifunctional PIs. In contrast to additive-dependent modification approaches, this topology-driven strategy enables intrinsic multifunctionality while maintaining compatibility with industrial polymerization processes, overcoming scalability challenges in functional PI production. The work redefines PI applications in aerospace composites, optoelectronic systems, and next-gen sensors under extreme conditions, while providing a paradigm for developing performance-integrated polymers through rational topological design.
分类号二类/Q1
WOS研究方向Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Science & Technology - Other Topics ; Materials Science
语种英语
WOS记录号WOS:001433808700001
资助机构This research was supported by the High-level Innovation Research Institute Program of Guangdong Province (2020B0909010003/GARA2023001000), National Natural Science Foundation of China (U20A20340), Foshan Introducing Innovative and Entrepreneurial Teams (1920001000108), and the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB0910303).
其他责任者陈钰玮,Min, Yonggang
源URL[http://dspace.imech.ac.cn/handle/311007/101463]  
专题宽域飞行工程科学与应用中心
作者单位1.Guangdong University of Technology;
2.Institute of Mechanics, Chinese Academy of Sciences, Beijing; 100190, China;
3.Guangdong Aerosp Res Acad
推荐引用方式
GB/T 7714
Chen YW,Liu YD,Min, Yonggang. Innovative Polyimide Modifications for Aerospace and Optoelectronic Applications: Synergistic Enhancements in Thermal, Mechanical, and Optical Properties[J]. ACS APPLIED MATERIALS & INTERFACES,2025,17(10):16016-16026.
APA 陈钰玮,刘屹东,&Min, Yonggang.(2025).Innovative Polyimide Modifications for Aerospace and Optoelectronic Applications: Synergistic Enhancements in Thermal, Mechanical, and Optical Properties.ACS APPLIED MATERIALS & INTERFACES,17(10),16016-16026.
MLA 陈钰玮,et al."Innovative Polyimide Modifications for Aerospace and Optoelectronic Applications: Synergistic Enhancements in Thermal, Mechanical, and Optical Properties".ACS APPLIED MATERIALS & INTERFACES 17.10(2025):16016-16026.

入库方式: OAI收割

来源:力学研究所

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