Chinese Journal of Organic Chemistry ›› 2024, Vol. 44 ›› Issue (8): 2538-2544.DOI: 10.6023/cjoc202403051 Previous Articles     Next Articles

ARTICLES

基于四苯乙烯的柔性发光材料的构筑及性能研究

王源浩a, 孙钰凯a, 刘昱迒a,b, 张照明a,*(), 颜徐州a,b,*()   

  1. a 上海交通大学化学化工学院 上海 200240
    b 上海交通大学变革性分子前沿科学中心 上海 200240
  • 收稿日期:2024-03-30 修回日期:2024-05-23 发布日期:2024-06-13
  • 作者简介:
    † 共同第一作者.
  • 基金资助:
    聚烯烃催化技术与高性能材料国家重点实验室和上海市聚烯烃催化技术重点实验室(SKL-LCTP-202301); 西安交通大学金属材料强度国家重点实验室(20222409)

Construction and Properties of Flexible Light-Emitting Materials Based on Tetraphenylethylene

Yuanhao Wanga, Yukai Suna, Yuhang Liua,b, Zhaoming Zhanga(), Xuzhou Yana,b()   

  1. a School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240
    b Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240
  • Received:2024-03-30 Revised:2024-05-23 Published:2024-06-13
  • Contact: E-mail: zhangzhaoming@sjtu.edu.cn; xzyan@sjtu.edu.cn
  • About author:
    † The authors contributed equally to this work.
  • Supported by:
    State Key Laboratory of Polyolefins and Catalysis and Shanghai Key Laboratory of Catalysis Technology for Polyolefins(SKL-LCTP-202301); State Key Laboratory for Mechanical Behavior of Materials(20222409)

Flexible light-emitting materials find broad applications across various realms of technical production owing to their capacity to uphold structural integrity and luminescent efficacy amidst diverse external forces. In this study, a range of flexible light-emitting materials featuring tunable fluorescence intensity have been synthesized with tetraphenylethylene as the chromophore group, employing a highly efficient thiol-ene click polymerization. By adjusting the ratio of thiol monomers with varying functional degrees involved in polymerization, a polymer network with superior mechanical properties is achieved. This network exhibits an elongation at break of 377%, a fracture stress of 33.0 MPa, and an impressive toughness of up to 90.6 MJ/m3. Because of the changes of molecular conformation owing to the external forces, the fluorescence quantum yield of the materials rises in tandem with the degree of stretching. Additionally, fluorescence quenching is observed following swelling, and the fluorescence re-emerging upon solvent volatilization, aligning with the principles of aggregation-induced emission. Drawing from the aforementioned study, this flexible light-emitting materials exhibit exceptional mechanical characteristics and tunable fluorescence intensity, poised to find practical utility in the realm of light-emitting sensors and signal detection.

Key words: aggregation-induced emission, flexible light-emitting materials, polymer network, mechanical properties, modulated fluorescence intensity