Immobilization of Carbonylcobalt Catalyst by Poly(4‐vinylpyridine) (P4VP) through N→Co Coordination Bonds: The Promotional Effect of Pyridine and the Reusability of Polymer Catalyst

Abstract

A carbonylcobalt catalyst, immobilized by poly(4-vinylpyridine) (P4VP) through N→Co coordination bonds, has been prepared by solvothermal method. It has been revealed that the pyridine fragments in the polymer catalyst act not only as promoters to improve the catalytic performance of the carbonylcobalt catalyst for alkoxycarbonylation of ethylene oxide to methyl 3-hydroxypropanoate but also as stabilizers to enhance the reusability of the polymer catalyst. Furthermore, the polymer catalyst could be easily separated by filtration and reused with only a slight loss of catalytic efficiency.

Polymerization-Induced Self-Assembly of P4VP-b-PBzMA Copolymer in Ethanol

“…讨论了聚合时间和苯乙烯(St)投料量 的影响, 观察到聚集体结构由球转变为蠕虫, 进而成为 囊泡的连续变化过程, 但 St 作为成核段在聚合过程中 转化率较低 [8] . 为了解决这一问题, Armes 等 [9] [10] . 利用聚合诱导自组装制备结构丰富的 P4VP-b-PBzMA 组装体在药物释放、化学催化等领域具备广泛 的应用前景.…”