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A kind of metal iridium complex and its application

A technology of complexes and metal iridium, which is applied in the direction of indium organic compounds, platinum group organic compounds, and compounds containing group 8/9/10/18 elements of the periodic table, etc., to achieve large Stokes shift, good phosphorescence performance, The effect that is not easy to interfere with the background

Inactive Publication Date: 2017-07-04
FUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the wide application of cyanide and its highly toxic characteristics, in recent years, how to develop a high-selectivity, high-sensitivity probe for qualitative and quantitative detection of cyanide has aroused great interest of researchers. Cyanide ion detectors based on metal complexes are rarely reported

Method used

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  • A kind of metal iridium complex and its application
  • A kind of metal iridium complex and its application
  • A kind of metal iridium complex and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The synthesis steps of complex (I) are as follows:

[0016] Under nitrogen protection, 25 mg [(ppy) 2 IrCl] 2 and 10 mg of 2,3-bis(2-pyridyl)pyrazine (bppz) were dissolved in a solvent mixed with dichloromethane and methanol at a volume ratio of 1:1, heated to reflux under nitrogen for 12 hours, cooled to room temperature, and then The solvent was distilled off under reduced pressure, and the chromatographic column was used for purification (with CH 2 Cl 2 : MeOH=40:1 is the eluting system) to obtain an orange-red solid with a yield of about 80%:

[0017]

[0018] ESI-MS in positive ion mode (CH 2 Cl 2 ): m / z=735; H-NMR (400 MHz) δ: 8.73 (d, J =2.6Hz, 1H), 8.58(d, J =3.8Hz, 1H), 8.40(d, J =7.6Hz, 1H), 8.14(d, J =4.8Hz, 1H), 8.09(d, J =6.7Hz, 1H), 8.02(d, J =2.6Hz, 1H), 7.99 (d, J =4.7Hz, 1H), 7.93(t, J =7.7Hz, 3H), 7.82 (dd, J =16.8Hz, 8.4Hz, 3H), 7.71 (dd, J =7.1Hz, 4.5Hz, 2H), 7.54 (dd, J =7.5Hz, 4.8Hz, 1H), 7.42 (dd, J =14.3Hz, 7.3Hz, 2H), 7.22(t,...

Embodiment 2

[0020] The synthesis steps of complex (II) are as follows:

[0021] Under nitrogen protection, 25 mg [(ppy) 2 IrCl] 2 and 10 mg of 4,7-phenanthrolino-5,6:5',6'-pyraz-ine (ppz) ligand were dissolved in a solvent mixed with dichloromethane and methanol at a volume ratio of 1:1, and heated to reflux under nitrogen 12 hours, cooled to room temperature, then evaporated the solvent under reduced pressure, and purified by chromatographic column (using CH 2 Cl 2 : MeOH=40:1 is the eluting system) to obtain an orange-red solid with a yield of about 80%:

[0022]

[0023] ESI-MS in positive ion mode (CH 2 Cl 2 ): m / z=733; H-NMR (400 MHz) δ: 9.57 (1 H, d, J =8.4Hz), 9.50 (1 H, d, J =8.6Hz), 9.33 (2 H, d, J =3.5Hz), 8.49-8.42 (2 H, m), 8.19 (2 H, dd, J =8.3Hz, 4.0Hz), 8.16-8.08 (2 H, m), 7.92 (2 H, d, J =7.8Hz), 7.86 (2 H, t, J =6.3Hz), 7.69 (1H, d, J =6.0Hz), 7.57 (1 H, d, J =5.7Hz), 7.13 (2 H, t, J =7.6Hz), 7.00 (2 H, t, J =7.3Hz), 6.95 (2 H, s), 6.41 (2 H, dd, J =16H...

Embodiment 3

[0025] (1) At a concentration of 1.0×10 -5 mol / L complex (I) or complex (II) in acetonitrile solution, add a series of different amounts of Cu 2+ ions, and measured their ultraviolet-visible absorption spectra in the wavelength range of 200-800 nm, the results are shown in figure 1 . Such as figure 1 As shown in (A), the absorbance of complex (Ⅰ) increases with Cu at the wavelength of 240nm and 380nm 2+ The increase of ion concentration (0→3.0 times) increases; as figure 1 As shown in (B), the absorbance of complex (Ⅱ) increases with Cu at 250nm and 450nm 2+ The increase of ion concentration (0→1.0 times) increases, at 310nm wavelength with Cu 2+ decrease with increasing ion concentration.

[0026] (2) At a concentration of 1.0×10 -5 A series of different amounts of CN - ions, and measured their ultraviolet-visible absorption spectra in the wavelength range of 200-800 nm, the results are shown in figure 2 . Such as figure 2 As shown in (A), the absorbance of com...

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Abstract

The invention discloses an iridium complex and an application thereof. A structural formula of the metal iridium complex is described in the descriptions; the iridium complex has good luminescent property and long service life in a visible light region. Metal Cu<2+> ions can react with the iridium complex to enable the iridium complex to generate luminescence quenching; when cyanide ions with different concentrations exist in a system, the luminescent property of the iridium complex can be recovered to different degrees, so that a purpose of quantitative and qualitative detection on the cyanide ions is achieved; the iridium complex is of great significance on environmental monitoring of cyanide.

Description

technical field [0001] The invention belongs to the technical field of chemical materials and environmental monitoring, in particular to a metal iridium complex and its application in the detection of cyanide ions. Background technique [0002] Cyanide is widely used in gold mining, electroplating, metallurgy and other industrial production, as well as plastic plastic processing, leather industry, petrochemical, photography, steel, nylon and other materials, but its leakage and discharge will inevitably affect human beings and Great harm to the environment. Human beings can be exposed to cyanide through various channels such as food, industry, and the surrounding environment, and cyanide can enter the human body through the respiratory system, digestive system, and even the skin, thereby affecting various physiological functions of the human body, such as cardiovascular, vision, and central nervous system. Normal functioning of the nervous and endocrine systems, etc. Due t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F15/00C09K11/06G01N21/64
CPCC07F15/0033C09K11/06C09K2211/185G01N21/6428
Inventor 李梅金慕娟娟王琼陈秀丹柴蔚巍王冲
Owner FUZHOU UNIV
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