Erratum to: Cyclodextrin-based hyperbranched polymers by acyclic diene metathesis polymerization of an ABn monomer: molecule design, synthesis, and characterization
Erratum to: Cyclodextrin-based hyperbranched polymers by acyclic diene metathesis polymerization of an ABn monomer: molecule design, synthesis, and characterization
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DOI：
10.1007/s10965-012-9937-y
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发表时间：
2012-04
影响因子：
2.8
通讯作者：
Ning Wang;L. Ding;M. Xie
中科院分区：
文献类型：
--
作者：
Ning Wang;L. Ding;M. Xie
在均相水/有机物体系中，通过无环二烯复分解（ADMET）聚合合成了一种新型的环糊精基超支化聚合物（HBP）。首先通过酯化反应制备了一种末端含有一个富电子烯烃和多个贫电子丙烯酸酯的改性α-环糊精（α-CD）分子，然后将其作为ABn型单体，在第二代Hoveyda-Grubbs催化剂作用下进行烯烃与丙烯酸酯的ADMET聚合，随着反应时间的延长，得到HBP。用元素分析、红外光谱、凝胶渗透色谱-多角度激光散射、核磁共振等方法对单体和HBP的结构进行了表征。支化度通过使用1H NMR光谱测定，并且值范围为0.51至0.42。研究了分子量对聚合物性能（热稳定性和溶解性）的影响。所得的HBP具有良好的热稳定性，并且分子量越大，分解温度越高，从361 °C到383 °C。这些热稳定的HBPs在非质子极性溶剂中也显示出优异的溶解性。
A novel cyclodextrin-based hyperbranched polymer (HBP) was synthetized via acyclic diene metathesis (ADMET) polymerization in homogeneous water/organic mixtures. A modifiedα-cyclodextrin (α-CD) molecule with one electron-rich terminal alkene and many electron-poor acrylates was first prepared through the esterification reaction, and then utilized as an ABn-type monomer for subsequent ADMET polymerization between alkene and acrylate using the second generation Hoveyda-Grubbs catalyst, yielding HBP with the reaction time prolonged. The chemical structures of monomer and HBP were characterized by elemental analysis, IR, gel permeation chromatography with multiangle laser light scattering, and NMR measurements. The degree of branching was determined by using1H NMR spectroscopy and the values ranged from 0.51 to 0.42. Influence of the molecular weight on the properties (thermal stability and solubility) was also investigated. The resulting HBPs showed the good thermal stability, and higher molecular weight resulted in higher decomposition temperature from 361 °C to 383 °C. These thermally stable HBPs also displayed the excellent solubility in aprotic polar solvents.