Detection Mechanism Research of Nitroaromatics by Iridium Luminescent Probe

doi:10.3969/j.issn.1672-6952.2022.01.003

Journal of Liaoning Petrochemical University ›› 2022, Vol. 42 ›› Issue (1): 13-18.DOI: 10.3969/j.issn.1672-6952.2022.01.003

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Detection Mechanism Research of Nitroaromatics by Iridium Luminescent Probe

Jia Tian(), Longquan Zhang, Zhiqian Xu, Wei Zhao, Lü Anwen, Yang Xing, Ling Di()

School of Petrochemical Engineering，Liaoning Petrochemical University，Fushun Liaoning 113001，China

Received:2021-01-21 Revised:2021-03-01 Published:2022-02-28 Online:2022-03-07
Contact: Ling Di

铱发光探针检测硝基芳香化合物机理

田佳(), 张龙泉, 徐誌谦, 赵薇, 吕安雯, 邢杨, 狄玲()

辽宁石油化工大学石油化工学院，辽宁抚顺 113001

通讯作者: 狄玲
作者简介:田佳（1999⁃），女，本科生，化学工程与工艺专业，从事金属有机化学方面的研究；E⁃mail：2813248196@qq.com。
基金资助:
辽宁省教育厅科学研究项目(L2019039);辽宁省自然科学基金项目(2020?BS?228);辽宁省大学生创新创业训练计划项目(2020101480004)

Abstract

Abstract:

Ir(Ⅲ) complex Ir(ppy)₃ was used as luminescent probe of the detection of three nitroaromatics include 3?nitrobenzoic acid, 3?nitrobenzyl alcohol, and 3?nitrotrifluorotoluene. And the luminescent detection mechanism was studied by density functional theory calculation and spectral analysis. The results showed that 3?nitrobenzoic acid, 3?nitrobenzyl alcohol and 3?nitrotrifluorotoluene could quench the luminescence of Ir(ppy)₃ in acetonitrile, with detection efficiencies K_SV of 20.4 L/mmol, 1.8 L/mmol and 2.8 L/mmol, and the lowest detection limits are 0.155×10^-6 mol/L, 1.760×10^-6 mol/L and 1.116×10^-6 mol/L, respectively. The luminescent detection mechanism of 3?nitrobenzoic acid, 3?nitrobenzyl alcohol, and 3?nitrotrifluorotoluene of Ir(ppy)₃ is electron transfer.

Key words: Ir(Ⅲ) complex, Nitroaromatc, Luminescence, Density functional theory, Electron transfer

摘要：

以铱(Ⅲ)配合物Ir（ppy）₃为发光探针，检测3种硝基芳香化合物，包括3?硝基苯甲酸、3?硝基苯甲醇、3?硝基三氟甲苯，并通过密度泛函理论计算结合光谱分析研究发光检测机理。结果表明，3?硝基苯甲酸、3?硝基苯甲醇和3?硝基三氟甲苯可淬灭Ir（ppy）₃在乙腈中的发光，检测效率K_SV分别为20.4、1.8 L/mmol和2.8 L/mmol，最低检测限分别达0.155×10^-6、1.760×10^-6 mol/L和1.116×10^-6 mol/L。Ir（ppy）₃对3?硝基苯甲酸、3?硝基苯甲醇和3?硝基三氟甲苯的发光检测机理为电子转移机理。

关键词: 铱(Ⅲ)配合物, 硝基芳香化合物, 发光, 密度泛函理论, 电子转移

CLC Number:

TE09

Jia Tian, Longquan Zhang, Zhiqian Xu, Wei Zhao, Lü Anwen, Yang Xing, Ling Di. Detection Mechanism Research of Nitroaromatics by Iridium Luminescent Probe[J]. Journal of Liaoning Petrochemical University, 2022, 42(1): 13-18.

田佳, 张龙泉, 徐誌谦, 赵薇, 吕安雯, 邢杨, 狄玲. 铱发光探针检测硝基芳香化合物机理[J]. 辽宁石油化工大学学报, 2022, 42(1): 13-18.

Figures/Tables 9

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Detection Mechanism Research of Nitroaromatics by Iridium Luminescent Probe

铱发光探针检测硝基芳香化合物机理

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