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Vinyl alkyl imidazole tetrathiacobaltocyanide (II) self-polymerizable ionic liquid and preparation method thereof

A technology of vinyl alkylimidazole and magnetic ionic liquid, which is applied in the field of structural magnetic functional materials and its preparation, can solve the problems of slow development of new magnetic ionic liquids and narrow research in application fields, and achieve easy processing, rapid separation, The effect of simple process

Inactive Publication Date: 2017-06-27
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the research on magnetic ionic liquids is still in its infancy, and the development of new magnetic ionic liquids is relatively slow. The synthesized magnetic ionic liquids mainly use magnetic centers as anions such as FeCl 4 - , FeBr 4 - Among them, the metal complex ions are mainly used, and the research on the application field is relatively narrow.

Method used

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  • Vinyl alkyl imidazole tetrathiacobaltocyanide (II) self-polymerizable ionic liquid and preparation method thereof
  • Vinyl alkyl imidazole tetrathiacobaltocyanide (II) self-polymerizable ionic liquid and preparation method thereof

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Effect test

Embodiment 1

[0027] Embodiment 1: 20.0g of 1-vinyl-3-butylimidazole cobalt isothiocyanate magnetic ionic liquid (VC 4 IM) 2 [Co(NCS) 4 ] and 0.30g initiator AIBN were placed in a 50mL round-bottomed flask, and flocs were obtained after reacting at 75°C for 24h. Add methanol to the round bottom flask, let stand to separate layers, and filter with suction to obtain a dark blue precipitate. The blue precipitate was washed 3 times with methanol and 3 times with acetone, then transferred to a watch glass. After the acetone was evaporated to dryness at room temperature, it was dried in a vacuum oven for 48 hours to obtain the polymerized magnetic ionic liquid P((VC 4 IM) 2 [Co(NCS) 4 ]).

[0028] After thermogravimetric analysis, P((VC 4 IM) 2 [Co(NCS) 4 ]) There are two stages of thermogravimetric loss. The first stage is (VC 4 IM) 2 [Co(NCS) 4 ] The thermal weight loss, the temperature is 590.76K. The second stage is P((VC 4 IM) 2 [Co(NCS) 4 ]), the temperature is 709.80K. Th...

Embodiment 2

[0029] Embodiment 2: 20.0g of 1-vinyl-3-pentylimidazole cobalt isothiocyanate magnetic ionic liquid (VC 5 IM) 2 [Co(NCS) 4 ] and 0.30g initiator AIBN were placed in a 50mL round-bottomed flask, and flocs were obtained after reacting at 75°C for 24h. Add methanol to the round bottom flask, let stand to separate layers, and filter with suction to obtain a dark blue precipitate. The blue precipitate was washed 3 times with methanol and 3 times with acetone, then transferred to a watch glass. After the acetone was evaporated to dryness at room temperature, it was dried in a vacuum oven for 48 hours to obtain the polymerized magnetic ionic liquid P((VC 5 IM) 2 [Co(NCS) 4 ]).

[0030] After thermogravimetric analysis, P((VC 5 IM) 2 [Co(NCS) 4 ]) There are two stages of thermogravimetric loss. The first stage is (VC 5 IM) 2 [Co(NCS) 4 ] The thermal weight loss, the temperature is 596.63K. The second stage is P((VC 5 IM) 2 [Co(NCS) 4 ]), the temperature is 712.18K. T...

Embodiment 3

[0031] Embodiment 3: 20.0g of 1-vinyl-3-hexylimidazole cobalt isothiocyanate magnetic ionic liquid (VC 6 IM) 2 [Co(NCS) 4 ] and 0.30g initiator AIBN were placed in a 50mL round-bottomed flask, and flocs were obtained after reacting at 75°C for 24h. Add methanol to the round bottom flask, let stand to separate layers, and filter with suction to obtain a dark blue precipitate. The blue precipitate was washed 3 times with methanol and 3 times with acetone, then transferred to a watch glass. After the acetone was evaporated to dryness at room temperature, it was dried in a vacuum oven for 48 hours to obtain the polymerized magnetic ionic liquid P((VC 6 IM) 2 [Co(NCS) 4 ]).

[0032] After thermogravimetric analysis, P((VC 6 IM) 2 [Co(NCS) 4 ]) There are two stages of thermogravimetric loss. The first stage is (VC 6 IM) 2 [Co(NCS) 4 ] The thermal weight loss, the temperature is 615.45K. The second stage is P((VC 6 IM) 2 [Co(NCS) 4 ]), the temperature is 721.32K. Th...

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Abstract

The invention relates to a self-polymerized magnetic ionic liquid of vinyl alkylimidazole tetrathiocyanate cobalt (II) and a preparation method thereof. The vinyl alkylimidazole tetrathiocyanate cobalt (II) magnetic ionic liquid is used as a monomer, Vinylalkylimidazolium tetrathiocyanate cobalt(Ⅱ) self-polymerized magnetic ionic liquids were prepared by self-polymerization method. Compared with general magnetic ionic liquids, it has the characteristics of strong magnetic induction effect, adjustable magnetism, high thermal stability, safety and stability, and good processability. It is solid and convenient for analysis and testing. The present invention realizes the controllability and designability of the magnetism of the polymerized magnetic ionic liquid through the change of the alkyl chain length on the monomer vinyl alkylimidazole tetrathiocyanate cobalt (II) type magnetic ionic liquid, and enhances the magnetic property through self-polymerization. The magnetic induction effect and thermal stability are clarified, and the preparation method of vinylalkylimidazolium tetrathiocyanate cobalt (II) self-polymerized magnetic ionic liquid with simple preparation process is provided.

Description

technical field [0001] The invention relates to a technical field of structural magnetic functional materials and their preparation, relates to a Co(II) self-polymerized magnetic ionic liquid and a synthesis method thereof, in particular to a vinyl alkylimidazole tetrathiocyanate cobalt(II) ) self-polymerized magnetic ionic liquid and its preparation method. Background technique [0002] Ionic liquids have been extensively studied and applied as a green solvent and catalyst. However, the research on magnetic ionic liquids is still in its infancy, and the development of new magnetic ionic liquids is relatively slow. The synthesized magnetic ionic liquids mainly use magnetic centers as anions such as FeCl 4 - , FeBr 4 - Among them, the metal complex ions are mainly used, and the research on the application field is relatively narrow. [0003] Polymerized magnetic ionic liquid is a functional polymer material with magnetic ionic liquid as the structural unit. In addition ...

Claims

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Application Information

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IPC IPC(8): C08F126/06
CPCC08F126/06
Inventor 管萍胡小玲丁小琪唐一梅史文涛王双洁
Owner NORTHWESTERN POLYTECHNICAL UNIV
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