Chemical Research in Chinese Universities ›› 2025, Vol. 41 ›› Issue (3): 519-524.doi: 10.1007/s40242-025-5034-8

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Low Thermal Quenching of an AIE-based Hydrogen-bonded Organic Framework for Phosphor-converted Light-emitting Diodes

SUN Zhihui1,2, YIN Peipei2, HE Shiyang1,2, ZHANG Kaige2, PAN Xiangrong2, WANG Jiayi2, HAO Peinan2, ZHOU Zhan2, YANG Xiaogang2, MA Lufang1,2, TAN Chaoliang3,4   

  1. 1. College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China;
    2. College of Chemistry and Chemical Engineering, Henan Key Laboratory of Function-Oriented Porous Materials, Luoyang Normal University, Luoyang 471934, P. R. China;
    3. Department of Electrical Engineering & Department of Biomedical Engineering, City University of Hong Kong, Hong Kong 999077, P. R. China;
    4. Hong Kong Branch of National Precious Metals Material Engineering Research Center (NPMM), City University of Hong Kong, Hong Kong 999077, P. R. China
  • Received:2025-02-28 Revised:2025-04-23 Online:2025-06-01 Published:2025-05-27
  • Contact: TAN Chaoliang,E-mail:chaoltan@cityu.edu.hk;YANG Xiaogang,E-mail:yxg2233@lynu.edu.cn E-mail:chaoltan@cityu.edu.hk;yxg2233@lynu.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (Nos. 22371109, 22171123), the Science Fund for Distinguished Young Scholars in Henan Province, China (No. 242300421036), and the Science and Technology Innovation Talent Program of University in Henan Province, China (No. 23HASTIT016).

Abstract: Non-metallic phosphors with high thermal stability and low thermal quenching (TQ) are expected to achieve the development and application of environmentally friendly and low-cost efficient light-emitting diodes (LEDs). Herein, a novel non-metallic hydrogen-bonded organic framework (TCBPE-HOF) phosphor with aggregation-induced emission (AIE) characteristic is synthesized by the assembly of 1,1,2,2-tetra(4-carboxy biphenyl)ethylene (TCBPE) under a simple solvothermal method for efficient LEDs with low TQ. The TCBPE-HOF shows a rare example of a 4-fold interpenetrated network based on an 8-connected hex net. It can maintain 71% of its initial emission intensity after being heated to 150 °C, outperforming several commercial inorganic phosphors. The fabrication of cyan LED devices enables it to be a viable alternative to currently available commercial phosphors.

Key words: Hydrogen-bonded organic framework (HOF), Aggregation-induced emission (AIE), Light-emitting diode (LED)