Malecha John J, Biller Joshua R, Lama Bimala, Gin Douglas L
Department of Chemistry, University of Colorado, Boulder, Colorado 80309, United States.
TDA Research, Inc., 4663 Table Mountain Drive, Golden, Colorado 80403, United States.
ACS Macro Lett. 2020 Jan 21;9(1):140-145. doi: 10.1021/acsmacrolett.9b00902. Epub 2020 Jan 9.
Direct, living ring-opening metathesis polymerization of a highly paramagnetic, norbornene-based imidazolium FeCl ionic liquid monomer was achieved using the Grubbs third-generation catalyst and starting the polymerization off with an uncharged, nonparamagnetic norbornene monomer in a sequential block copolymerization. Preparing the paramagnetic norbornene imidazolium FeCl monomer in high purity was found to be crucial for enabling living polymerization behavior and generating paramagnetic diblock copolymers with predictable block lengths and compositions.
使用Grubbs第三代催化剂，通过顺序嵌段共聚，以不带电荷的非顺磁性降冰片烯单体引发聚合反应，实现了基于降冰片烯的高顺磁性咪唑鎓FeCl离子液体单体的直接活性开环易位聚合。发现制备高纯度的顺磁性降冰片烯咪唑鎓FeCl单体对于实现活性聚合行为以及生成具有可预测链段长度和组成的顺磁性二嵌段共聚物至关重要。
