Polyvinylimidazole

• CAS: 25232-42-2
• Catalog Number: ACM25232422
• Category: Main Products
• Synonyms: 1-ethenyl-1h-imidazolhomopolymer;1-vinylimidazolehomopolymer;1-vinyl-imidazolpolymers;lufixan;n-vinylimidazolehomopolymer;n-vinylimidazolepolymer;poly(1-vinylimidazole);poly(n-vinylimidazole)
• IUPAC Name: 1-ethenylimidazole
• Canonical SMILES: C=CN1C=CN=C1
• InChI Key: OSSNTDFYBPYIEC-UHFFFAOYSA-N
• Appearance: white crystalline powder
• EC Number: 608-353-8
• Exact Mass: 94.05310

Case Study

Polyvinylimidazole: A Versatile Precursor for Ionic Liquid Catalysts in Synthesis Applications

Xu H, et al. Fuel, 2023, 334(2), 126762.

Polyvinylimidazole (poly-VIM) serves as a critical precursor for developing advanced ionic liquid catalysts, exemplified by the preparation of polyvinyl-3-butylimidazolium cobalt chloride salt (poly-[BVIM][CoCl3]). The synthetic process involves the alkylation of poly-VIM with 1-chlorobutane to form poly-[BVIM]Cl, a pale-yellow solid, which subsequently undergoes coordination with cobalt chloride to yield the blue solid ionic liquid catalyst. This stepwise synthesis highlights the structural adaptability of poly-VIM in forming functionalized ionic liquids.
Poly-VIM-based ionic liquid catalysts exhibit unique properties such as high thermal stability, reusability, and catalytic efficiency, making them highly suitable for various chemical transformations. The poly-[BVIM][CoCl3] catalyst, in particular, demonstrates promise in applications requiring cobalt-mediated reactions, including oxidation and polymerization processes. The incorporation of cobalt imparts distinctive electronic and coordination properties, enhancing its reactivity and selectivity.

Polyvinylimidazole (PVI) for the Functionalization and Synthesis of Polyvinylimidazole-Wrapped Halloysite Nanotubes

Peng X, et al. International Journal of Biological Macromolecules, 2020, 155, 1184-1193.

Polyvinylimidazole (PVI) plays a crucial role in the synthesis of Polyvinylimidazole-Wrapped Halloysite Nanotubes (PVI@HNTs), a composite material with enhanced functional properties. MPS-modified HNTs were prepared by dispersing 10.0 g of HNTs into a mixture of 20 mL water, 15 mL aqueous ammonium, and 180 mL ethanol. This mixture was stirred vigorously at room temperature for 24 hours. Afterward, 2.0 mL of MPS was added, and stirring continued for another 24 hours. The MPS-modified HNTs were purified through three cycles of centrifugation and then vacuum-dried at 50°C.
PVI@HNTs were synthesized using distillation and precipitation polymerization. In a flask equipped with a distillation and condensation apparatus, 0.30 g of MPS-modified HNTs, 0.0216 g (2 wt% relative to the comonomers) of AIBN, 0.5815 g of VI, and 0.5 g of the crosslinker EGDMA were mixed with 80 mL of acetonitrile. The mixture was heated to boiling, and upon removal of 40 mL of acetonitrile via distillation, the reaction was terminated. The PVI@HNTs were purified by ultracentrifugation through three cycles of decanting and resuspension in acetonitrile. Finally, the PVI@HNTs were vacuum-dried at 50°C.

Polyvinylimidazole-Modified Carbon Paste Electrodes for Electrochemical Applications

Yildiz G, et al. Food Chemistry, 2014, 152, 245-250.

Polyvinylimidazole (PVI) has been effectively employed to modify carbon paste electrodes (CPE) for electrochemical applications. In the preparation process, PVI is first dried at 80°C for 1 hour, then ground into a fine powder. This is combined with graphite powder (90%) to form a PVI-modified CPE with a composition of 10% PVI. After thorough mixing, 700 μL of silicone oil is added to ensure uniform consistency. The resulting paste is carefully packed into a polyethylene tube with a 2.0 mm inner diameter, and the electrode tip is polished using smooth paper. A copper wire is inserted into the paste to establish electrical conductivity. The electrode can be regenerated after each experiment by removing a thin surface layer and replenishing the paste before polishing it again.