Synthesis of PMHDO-g-PDEAEA well-defined amphiphilic graft copolymer via successive living coordination polymerization and SET-LRP

Synthesis of PMHDO-g-PDEAEA well-defined amphiphilic graft copolymer via successive living coordination polymerization and SET-LRP
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通过连续活性配位聚合和SET-LRP合成PMHDO-g-PDEAEA明确的两亲接枝共聚物

DOI:
10.1002/pola.26470
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发表时间:
2013-03
期刊:
Journal of Polymer Science Part A: Polymer Chemistry
影响因子:
--
通讯作者:
Huang, Xiaoyu
Huang, Xiaoyu
中科院分区:
其他
文献类型:
--
作者:
Lu, Guolin;Li, Yongjun;Gao, Hongsheng;Guo, Hao;Zheng, Xingliang;Huang, Xiaoyu

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通过6-甲基-1,2-庚二烯-4-醇(MHDO)的连续活性配位聚合和丙烯酸2-(二乙氨基)乙酯(DEAEA)的单电子转移活性自由基聚合(SET-LRP)合成了一系列含有疏水性聚丙二烯主链和亲水性聚(2-(二乙氨基)丙烯酸乙酯)(PDEAEA)侧链的明确两亲性接枝共聚物。首先在甲苯中进行镍催化的 MHDO 活性配位聚合,得到结构明确、含双键的聚(6-甲基-1,2-庚二烯-4-醇)(PMHDO)均聚物,具有低多分散性(Mw/Mn = 1.10)。接下来,使用2-氯丙酰氯对均聚物的每个重复单元中的侧羟基进行酯化,从而将均聚物转化为PMHDO-Cl大分子引发剂。最后,以四氢呋喃/H2O为大分子引发剂,使用CuCl/三(2-(二甲氨基)乙基)胺作为催化体系引发DEAEA的SET-LRP,通过接枝策略得到结构明确的PMHDO-g-PDEAEA接枝共聚物(Mw/Mn ≤ 1.22)。以 N-苯基-1-萘胺为探针,通过荧光光谱测定临界胶束浓度 (cmc),并通过透射电子显微镜观察胶束形态。 © 2012 Wiley periodicals, Inc. J Polym Sci A 部分:Polym Chem,2013
A series of well‐defined amphiphilic graft copolymer containing hydrophobic polyallene‐based backbone and hydrophilic poly(2‐(diethylamino)ethyl acrylate) (PDEAEA) side chains was synthesized by sequential living coordination polymerization of 6‐methyl‐1,2‐heptadiene‐4‐ol (MHDO) and single electron transfer‐living radical polymerization (SET‐LRP) of 2‐(diethylamino)ethyl acrylate (DEAEA). Ni‐catalyzed living coordination polymerization of MHDO was first performed in toluene to give a well‐defined double‐bond‐containing poly(6‐methyl‐1,2‐heptadiene‐4‐ol) (PMHDO) homopolymer with a low polydispersity (Mw/Mn = 1.10). Next, 2‐chloropropionyl chloride was used for the esterification of pendant hydroxyls in every repeating unit of the homopolymer so that the homopolymer was converted to PMHDO‐Cl macroinitiator. Finally, SET‐LRP of DEAEA was initiated by the macroinitiator in tetrahydrofuran/H2O using CuCl/tris(2‐(dimethylamino)ethyl)amine as catalytic system to afford well‐defined PMHDO‐g‐PDEAEA graft copolymers (Mw/Mn ≤ 1.22) through the grafting‐from strategy. The critical micelle concentration (cmc) was determined by fluorescence spectroscopy with N‐phenyl‐1‐naphthylamine as probe and the micellar morphology was visualized by transmission electron microscopy. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2013
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