Watanabe, Hironobu published the artcileRole of the Counteranion in the Stereospecific Living Cationic Polymerization of N-Vinylcarbazole and Vinyl Ethers: Mechanistic Investigation and Synthesis of Stereo-Designed Polymers, COA of Formula: C8H15ClN2, the publication is Macromolecules (Washington, DC, United States) (2022), 55(11), 4378-4388, database is CAplus.
The effects of counteranions in the cationic polymerization of N-vinylcarbazole (NVC) and vinyl ethers were investigated to develop guidelines for stereospecific living cationic polymerization The counteranion structure, such as the charge number, metal center, and ligand, was systematically examined using the CF3SO3H/onium halide/metal halide initiating system. As a result, the electronic properties rather than the steric bulkiness of the counteranion were demonstrated to be key to stereoregulation during the polymerization of N-vinylcarbazole. Fine-tuning the stereoregularity of the resultant polymers was achieved (mm = 45-95%) while maintaining the living nature of polymerization Computational anal. indicated that the stereoregulation was attributed to electrostatic interactions between the counteranion and pendant aromatic rings. These findings also allowed stereospecific polymerization of vinyl ethers containing an aromatic ring in the pendant. Moreover, the successful synthesis of “stereo-designed” polymers, such as stereoblock and stereocontrolled block copolymers, was achieved by appropriately designing counteranions for living cationic polymerization
Macromolecules (Washington, DC, United States) published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C22H32O2, COA of Formula: C8H15ClN2.
Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem