Chinese Journal of Applied Chemistry ›› 2022, Vol. 39 ›› Issue (10): 1617-1626.DOI: 10.19894/j.issn.1000-0518.210564

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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)

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

CLC Number: