应用化学 ›› 2022, Vol. 39 ›› Issue (10): 1617-1626.DOI: 10.19894/j.issn.1000-0518.210564

• 研究论文 • 上一篇    下一篇

咔唑基铱(Ⅲ)磷光探针检测硝基芳烃及福井函数理论

王子昂1, 曹利星2, 邵盼1, 朱梦宇1, 刘恩宁1, 梁爽1, 邢杨1, 狄玲1(), 杨占旭1()   

  1. 1.辽宁石油化工大学石油化工学院,抚顺 113001
    2.中国石油抚顺石化公司腈纶化工厂,抚顺 113109
  • 收稿日期:2021-12-13 接受日期:2022-03-03 出版日期:2022-10-01 发布日期:2022-10-05
  • 通讯作者: 狄玲,杨占旭
  • 基金资助:
    国家自然科学基金(21671092);辽宁省“兴辽英才”科技创新领军人才(XLYC1802057);辽宁省教育厅科学研究经费项目(L2019039);辽宁省自然科学基金(2020-BS-228)

Detection and Theoretical Study of Fukui Function of Nitroaromatics by Carbazole‑Based Iridium(Ⅲ) Phosphorescent Probe

Zi-Ang WANG1, Li-Xing CAO2, Pan SHAO1, Meng-Yu ZHU1, En-Ning LIU1, Shuang LIANG1, Yang XING1, Ling DI1(), Zhan-Xu YANG1()   

  1. 1.School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun 113001,China
    2.PetroChina Fushun Petrochemical Company Acrylic Fiber Chemical Plant,Fushun 113109,China
  • Received:2021-12-13 Accepted:2022-03-03 Published:2022-10-01 Online:2022-10-05
  • Contact: Ling DI,Zhan-Xu YANG
  • About author:yangzhanxu@lnpu.edu.cn
    kitty_dl@163.com
  • Supported by:
    the National Natural Science Foundation of China(21671092);Liaoning Revitalization Talents Program of China(XLYC1802057);the Scientific Research Foundation of the Education Department of Liaoning Province(L2019039);the Natural Science Foundation of Liaoning Province(2020-BS-228)

摘要:

将咔唑基团引入有机配体并利用2步法合成了室温下具有磷光发射的新型铱(Ⅲ)配合物Ir(ppyCz)3。随后,以Ir(ppyCz)3为发光探针用于开发1,3-二硝基苯等6种常见硝基芳烃的高效发光检测方案。研究表明,Ir(ppyCz)3对1,3-二硝基苯具有最高的检测效率,猝灭常数KSV为(26.38±1.05) L/mmol,最低检测限为2.50 × 10-6 mmol/L。密度泛函理论计算及光谱交叠实验表明,Ir(ppyCz)3对硝基芳烃的发光检测机理为电子转移机理。硝基芳烃轨道权重福井函数的顺序与Ir(ppyCz)3对硝基芳烃的检测效率顺序相符。

关键词: 铱(Ⅲ)配合物, 磷光, 硝基芳烃, 密度泛函理论, 福井函数

Abstract:

A room temperature phosphorescent Ir(Ⅲ) complex Ir(ppyCz)3 is synthesized by a two-step synthesis method with a carbazole modified organic ligand. The high-efficiency luminescent detection strategy of six familiar nitroaromatics including 1,3-dinitrobenzene, etc. is developed using Ir(ppyCz)3 as the luminescent probe. The highest detection efficiency of 1,3- dinitrobenzene by Ir(ppyCz)3 is demonstrated with the quenching content KSV of (26.38±1.05) L/mmol, and minimum detection limit of 2.50×10-6 mmol/L. Density functional theory calculations and spectral overlap experiments show that the detection mechanism of Ir(ppyCz)3 for the six nitroaromatics is assigned to electron transfer. The sequence of the orbital weighted Fukui function for the six nitroaromatics dovetails with the corresponding detection efficiency sequence of nitroaromatics by Ir(ppyCz)3.

Key words: Ir(Ⅲ) complex, Phosphorescence, Nitroaromatics, Density functional theory, Fukui function

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