有机金属介导的偏二氟乙烯自由基聚合反应。
Organometallic-Mediated Radical Polymerization of Vinylidene Fluoride.
机构信息
Ingénierie et Architectures Macromoléculaires, Institut Charles Gerhardt, UMR 5253 CNRS, UM, ENSCM, Place Eugène Bataillon, 34095, Montpellier Cedex 5, France.
Present address: Department of Chemistry, Indian Institute of Technology Bhilai, Raipur, 492015, Chhattisgarh, India.
出版信息
Angew Chem Int Ed Engl. 2018 Mar 5;57(11):2934-2937. doi: 10.1002/anie.201712347. Epub 2018 Feb 16.
An unprecedented level of control for the radical polymerization of vinylidene fluoride (VDF), yielding well-defined PVDF (at least up to 14 500 g mol ) with low dispersity (≤1.32), was achieved using organometallic-mediated radical polymerization (OMRP) with an organocobalt compound as initiator. The high chain-end fidelity was demonstrated by the synthesis of PVDF- and PVAc-containing di-and triblock copolymers. DFT calculations rationalize the efficient reactivation of both head and tail chain end dormant species.
采用有机金属介导的自由基聚合（OMRP），以有机钴化合物作为引发剂，实现了对偏二氟乙烯（VDF）聚合的前所未有的控制水平，得到了具有低分散性（≤1.32）的窄分子量分布 PVDF（至少高达 14500g/mol）。通过合成含有 PVDF 和 PVAc 的二嵌段和三嵌段共聚物，证明了高链端保真度。DFT 计算合理地解释了头和尾链端休眠物种的有效再激活。
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