Chinese Journal of Organic Chemistry ›› 2024, Vol. 44 ›› Issue (8): 2523-2529.DOI: 10.6023/cjoc202404003 Previous Articles     Next Articles

ARTICLES

基于主客体掺杂室温磷光材料的氧气传感材料

张惟a, 李庚辰a, 苏昊b, 戴文博c,d,*(), 孙鹏e, 石建兵a, 佟斌a, 蔡政旭a,*(), 董宇平a   

  1. a 北京理工大学材料学院 结构可控先进功能材料与绿色应用实验室 北京 100081
    b 中国科学技术大学 合肥国家实验室 合肥 230088
    c 温州大学化学与材料工程学院 浙江温州 325035
    d 温州大学 温州市生物保健材料与化学重点实验室 浙江温州 325035
    e 北京理工大学前沿交叉科学研究院 北京 100081
  • 收稿日期:2024-04-01 修回日期:2024-05-31 发布日期:2024-07-02
  • 作者简介:
    † 共同第一作者.
  • 基金资助:
    国家自然科学基金(22222501); 国家自然科学基金(22175023); 北京市自然科学基金(2232022); 北京市自然科学基金(2242060); 北京理工大学研究生科研水平和创新能力提升计划(2023YCXZ016)

Detection of Oxygen Based on Host-Guest Doped Room-Temperature Phosphorescence Material

Wei Zhanga, Gengchen Lia, Hao Sub, Wenbo Daic,d(), Peng Sune, Jianbing Shia, Bin Tonga, Zhengxu Caia(), Yuping Donga   

  1. a Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081
    b Hefei National Laboratory, University of Science and Technology of China, Hefei 230088
    c College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035
    d Key Lab of Biohealth Materials and Chemistry of Wenzhou, Wenzhou University, Wenzhou, Zhejiang 325035
    e Advanced Research Institute of Multidisciplinary Sciences, Beijing Institute of Technology, Beijing 100081
  • Received:2024-04-01 Revised:2024-05-31 Published:2024-07-02
  • Contact: E-mail: wbdai@wzu.edu.cn; caizx@bit.edu.cn
  • About author:
    † The authors contributed equally to this work.
  • Supported by:
    National Natural Science Foundation of China(22222501); National Natural Science Foundation of China(22175023); Natural Science Foundation of Beijing(2232022); Natural Science Foundation of Beijing(2242060); Beijing Institute of Technology Research and Innovation Promoting Project(2023YCXZ016)

Quantitative oxygen detection, especially at low concentrations, holds significant importance in the realms of biology, complex environments, and chemical process engineering. Due to the high sensitivity and rapid response of the triplet excitons of phosphorescence to oxygen, pure organic room-temperature phosphorescence (RTP) materials have garnered widespread attention in recent years for oxygen detection. However, simultaneously achieving ultralong phosphorescence at room temperature and quantitative oxygen detection from pure organic host-guest doped materials poses challenges. The densely packed materials may decrease non-radiative decay to increase the phosphorescence, but are unsuitable for oxygen diffusion in oxygen detection. Herein, the oxygen sensitivity of host-guest doped RTP materials using 4-bromo-N,N-bis(4-(tert- butyl)phenyl)aniline (TPABuBr) as the host and 6-bromo-2-butyl-1H-benzo[de]isoquinoline-1,3(2H)-dione (NIBr) as the guest was developed. The doped material exhibits fluorescence-phosphorescence dual-emission behavior at room temperature. The tert-butyl groups in TPABuBr facilitate appropriate intermolecular spacing in the crystal state, enhancing oxygen permeability. Therefore, oxygen penetration can quench the phosphorescence emission. The observed linear relationship between the phosphorescence intensity of the doped material and the oxygen volume fraction conforms to the Stern-Volmer equation, suggesting its potential for quantitative analysis of oxygen concentration. The calculated limit of detection is 0.015% (φ), enabling the analysis of oxygen with a volume fraction of less than 2.5% (φ). Moreover, the doped materials demonstrate rapid response and excellent photostability, indicating their potential utility as oxygen sensors. This study elucidates the design and characteristics of NIBr/TPABuBr doped materials, highlighting their potential application in oxygen concentration detection and offering insights for the design of oxygen sensors.

Key words: organic room-temperature phosphorescence, host-guest doped strategy, oxygen sensitive materials, oxygen concentration detection