Poly 4, 4'-(2, 2'-bithiazole) high polymer and its chelate as magnetic material and prepn process
The technology of a magnetic material and bithiazole, which is applied in the field of aromatic heterocyclic polymer chelate magnetic materials and its preparation, can solve the problems of few reports on organic polymer magnetic materials, and achieve a simple and easy preparation method, easy processing, The effect of magnetic stability
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Embodiment 1
[0032] Embodiment 1: the preparation method of poly 4,4'-(2,2'-bithiazole) macromolecule
[0033] In a 500ml flask, accurately weigh 4.8g dithiooxamide (98%) and 9.75g 1,4-dibromo-butanedione, add 150ml dimethyl sulfoxide, and stir the reaction at room temperature under the protection of chlorine gas. After a few minutes, the color of the solution changed from yellow to reddish-brown. After 8 hours of reaction, use 250ml acetone as a precipitant to precipitate a brown precipitate product, filter, wash the product several times with methanol and water, and finally put the product under vacuum at 40°C. dry.
[0034] Product weight: 4.2 g, yield 70%. The intrinsic viscosity is [η]=0.33dl / g.
Embodiment 2
[0035] Embodiment 2: Poly 4,4'-(2,2'-bithiazole) polymer neodymium chelate magnetic material and preparation method
[0036] In a 100ml flask, weigh 1.0g of the poly 4,4'-(2,2'-bithiazole) polymer prepared in Example 1, add 50ml of dimethyl sulfoxide, stir to dissolve, add neodymium trichloride (NdCl 3 ·6H 2 O) 6.48g, under the protection of nitrogen, the mixture was stirred and reacted for 8-12 hours at a reaction temperature of 60-80°C, and water was used as a precipitant to precipitate a red-black crude product, which was filtered and washed with a large amount of water until the filtrate Chloride-free (with AgNO 3 reagent test), and the final product was vacuum-dried at 40°C. Yield 65%. For its magnetic properties, see figure 1 , figure 2 shown.
[0037] From figure 1 x -1 It can be seen from the -T curve that its paramagnetic Curie temperature Tp reaches 242K, which is one of the few high Tp materials among the organic polymer magnetic materials reported at home ...
Embodiment 3
[0038] Embodiment 3: poly 4,4'-(2,2'-bithiazole) polymer praseodymium chelate magnetic material and preparation method
[0039] In a 100ml flask, weigh 1.0g of the poly 4,4'-(2,2'-bithiazole) polymer prepared in Example 1, add 50ml of dimethyl sulfoxide, stir to dissolve, add praseodymium trichloride (PrCl 3 ·6H 2 O) 6.42g, under the protection of nitrogen, the mixture was stirred and reacted for 8-12 hours at a reaction temperature of 60-80°C, and water was used as a precipitant to precipitate a red-black crude product, which was filtered and washed with a large amount of water until the filtrate Chloride-free (with AgNO 3 reagent test), and the final product was vacuum-dried at 40°C. Yield 60%. For its magnetic properties, see image 3 shown. image 3 The hysteresis loop shows that the material has a certain magnetic saturation strength and is a typical soft magnetic material.
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