Blue-green fluorescent sandwich-type manganese coordination polymer, preparation method and application thereof to positive ion detection

A coordination polymer, blue-green fluorescence technology, applied in the field of sandwich-type manganese coordination polymers, can solve the problems of difficult fluorescent materials and applications in the detection field, non-fluorescence and other problems, and achieve the effect of simple operation and high thermal stability

Active Publication Date: 2018-12-21
CHONGQING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The transition metal manganese is cheap and easy to obtain, and the coordination ability of manganese ions is strong. Manganese coordination polymers have gradually become an important direction in the field of material research. However, the existing manganese coordination polymers generally have magnetic properties or other properties, and are not Non-fluorescent, making it difficult to apply in the field of fluorescent materials and detection

Method used

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  • Blue-green fluorescent sandwich-type manganese coordination polymer, preparation method and application thereof to positive ion detection
  • Blue-green fluorescent sandwich-type manganese coordination polymer, preparation method and application thereof to positive ion detection
  • Blue-green fluorescent sandwich-type manganese coordination polymer, preparation method and application thereof to positive ion detection

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Experimental program
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Effect test

Embodiment 1

[0032] The preparation of embodiment 1 complex of the present invention

[0033] Weigh raw materials according to the following specific mass or volume: H 3 tma(0.05mmol), bpeb(0.025mmol), MnCl 2 4H 2 O (0.075mmol), HCl (30uL, 1.7mol / L), CH 3 CN (3 mL), water (7 mL).

[0034] Placed in a 50mL glass beaker, the mixture was stirred for 0.5 hours (h), then transferred into a 25mL reactor, reacted at 140°C for two days, then cooled to room temperature naturally, and a block crystal was observed, which was filtered out from the mother liquor, CH 3 CN, wash with water, dry naturally.

[0035] Carry out powder diffraction test with Shimadzu XRD-6100 type X-ray diffractometer, the peak of test spectrum and the peak energy of the spectrum simulated by mercury software can be well matched, indicating that this crystal is the target product, and the sample purity is higher ( See Figure 4 ). Under the condition of air atmosphere, thermogravimetric analysis shows that the obtained...

Embodiment 2

[0040] The preparation of embodiment 2 complexes of the present invention

[0041] Weigh raw materials according to the following specific mass or volume: H 3 tma(0.05mmol), bpeb(0.025mmol), MnCl 2 4H 2 O (0.075mmol), HCl (20uL, 1.7mol / L), CH 3 CN (3 mL), water (7 mL).

[0042] Placed in a 50mL glass beaker, the mixture was stirred for 1.5 hours (h), then transferred into a 25mL reactor, reacted at 130°C for three days, then cooled to room temperature naturally, and a block crystal was observed, which was filtered out from the mother liquor, CH 3 CN, wash with water, dry naturally.

[0043] The product was characterized by X-ray powder diffraction, and the data obtained were similar to those in Example 1. Illustrate that the crystal structure that makes with embodiment 2 does not change and product is purer (see Figure 4 ).

[0044] This embodiment is repeated many times, and according to actual production, {[Mn 2 (tma) 2 ](H 2 bpeb)} n The quality of 12.4 ~ 12.7m...

Embodiment 3

[0045] The preparation of embodiment 3 complexes of the present invention

[0046] Weigh raw materials according to the following specific mass or volume: H 3 tma(0.05mmol), bpeb(0.025mmol), MnCl 2 4H 2 O (0.075mmol), HCl (40uL, 1.7mol / L), CH 3 CN (3 mL), water (7 mL).

[0047] Place in a 50mL glass beaker, stir the mixture for 1h, then transfer it into a 25mL reactor, react at 150°C for four days, then cool to room temperature naturally, observe yellow crystals, which are the target product, filter it out from the mother liquor, and then use CH 3 CN, wash with water, dry naturally.

[0048] The product was characterized by X-ray powder diffraction, and the data obtained were similar to those in Example 1. Illustrate that the crystal structure that makes with embodiment 3 does not change and product is purer (see Figure 4 ).

[0049] This embodiment is repeated many times, and according to actual production, {[Mn 2 (tma) 2 ](H 2 bpeb)} n The mass of 11.9 ~ 12.6mg,...

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Abstract

The invention relates to the field of materials, in particular to a blue-green fluorescent sandwich-type manganese coordination polymer, a preparation method and application thereof to positive ion detection. The new manganese coordination polymer can emit bimodal glue-green fluorescence under excitation of ultraviolet light, meanwhile, the thermal stability of the polymer is high, and the polymeris degraded at the temperature of approximately 400 DEG C, and meets the high temperature requirement for additive in the processing of light conversion plastics. The polymer can further serve as a detection reagent to explore whether positive ions such as Pb2+, Al3+ and Pr3+ exist in a solution or not through a ultraviolet visible spectrophotometer, and thus can have the application prospect inthe field of positive ion detection. The preparation method prepared by the invention is easy to operate, the yield of the product can be maintained within the range of 57-63%, and because the coordination polymer {[Mn2(tma)2](H2bpeb)}n is insoluble in solvents such as water, ethyl alcohol and acetonitrile, the preparation method can be utilized for enriching and recycling Mn.

Description

technical field [0001] The invention relates to the field of materials, in particular to a blue-green fluorescent sandwich-type manganese coordination polymer, a preparation method and its application in positive ion detection. Background technique [0002] Since the 21st century, metal-organic coordination polymer fluorescent materials have the advantages of high luminous efficiency and broad emission spectrum, and have been widely used in the field of light-emitting devices. At the same time, they also have certain applications in the field of fluorescence detection and analysis. Metal-organic complex light-emitting materials have the following possible light-emitting mechanisms: 1. Organic ligands: contain light-emitting groups. After absorbing ultraviolet light and visible light, the light emission can directly come from the ligand, or accompanied by Charge transfer between metals or metal clusters; 2. Metal ions: The luminous effect of transition metal ions is quenched ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00G01N21/3577G01N21/64
CPCC08G83/008G01N21/3577G01N21/64
Inventor 黄坤林丁旭萌陈新张如意郭媛媛
Owner CHONGQING NORMAL UNIVERSITY
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