Harmonizing High Phosphorescence Efficiency and Stretchability in Flexible Afterglow Materials Through Microphase Engineering
Abstract
ABSTRACT Organic ultralong room‐temperature phosphorescence (OURTP) materials are promising for flexible optoelectronics but often suffer from a trade‐off between phosphorescence efficiency and mechanical flexibility. To overcome this limitation, a block copolymer system is developed through the incorporation of coronene into poly(styrene‐isoprene‐styrene) (SIS). Within this structure, the rigid polystyrene (PS) segments immobilize the phosphors and facilitate charge‐transfer‐mediated OURTP, resulting in high phosphorescence efficiency (Φ = 54.9%, τ = 6.26 s). Concurrently, the polyisoprene (PI) segment ensures outstanding elasticity, endowing the material with ultra‐stretchability (2380.5% strain) and fatigue resistance (withstanding 600% strain over 40 cycles). The system also maintains intrinsic morphological homogeneity, effectively avoiding phase separation. Through microphase engineering, this work successfully reconciles the long‐standing conflict between luminescence and flexibility, providing a general design strategy for multifunctional polymers suitable for wearable electronics that demand both deformability and phosphorescent capability.
Article Details
Authors (10)
Ping Jiang
Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & Technology Meilong Road 130, Shanghai 200237, China
Chenjia Yin
Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & Technology Meilong Road 130, Shanghai 200237, China
Qiqi Xu
Jie Sun
Lei Zhou
Lisha Zhang
Department of Plant Biochemistry, Centre of Plant Molecular Biology, Eberhard-Karls-University of Tübingen
Yanjie Chen
Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & Technology Meilong Road 130, Shanghai 200237, China
Bingbing Ding
He Tian
Center of Electron Microscopy, School of Materials Science and Engineering, Zhejiang University, Hangzhou, China.
Xiang Ma
Fujian Provincial Key Laboratory of Advanced Inorganic Oxygenated-Materials, College of Chemistry