- Functionalized Ionic Liquids
- Carboxyl Functionalized Ionic Liquids
Functionalized ionic liquids can meet diversified application requirements by introducing specific functional groups into anions and cations. The introduction of carboxyl groups into the ionic liquid can make the functionalized ionic liquid have both the properties of ionic liquid and carboxylic acid. It can be used as an acid catalyst in organic synthesis, as a benign solvent to dissolve biological macromolecules, as an absorbent to absorb harmful substances, and as a reaction medium to prepare and modify nanoparticles. Carboxyl functionalized ionic liquids can be divided into cationic functionalized and anionic functionalized. Cationic functionalization is mainly the introduction of carboxylic acid carbon chain on the nitrogen atom of imidazole. Anionic functionalization is the direct use of carboxylate anions. Carboxyl functionalized ionic liquids can be applied in the fields of biology, organic synthesis, nanomaterials and environmental fields.
Figure 1. Common structure of carboxyl functionalized ionic liquids
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