School of Materials Engineering, Yancheng Institute of Technology, Yancheng, 224051, China.
Macromol Rapid Commun. 2013 Oct;34(20):1635-41. doi: 10.1002/marc.201300570. Epub 2013 Sep 12.
The synthesis of thiol-functionalized long-chain highly branched polymers (LCHBPs) has been accomplished in combination of ring-opening metathesis polymerization (ROMP) and thiol-Michael addition click reaction. A monotelechelic polymer with a terminal acrylate and many pendent thiol groups is first prepared through adding an internal cis-olefin terminating agent to the reaction mixture immediately after the completion of the living ROMP, and then utilized as an ABn -type macromonomer in subsequent thiol-ene reaction between acrylate and thiol, yielding LCHBPs as the reaction time prolonged. Au nanoparticles are then covalently conjugated onto the surface of thiol-functionalized LCHBP to fabricate novel hybrid nanostructures, which is shown as one interesting application of such functionalized metathesis polymers. This facile approach can be extended toward the fabrication of novel nanomaterials with sophisticated structures and tunable multifunctionalities.
已结合开环易位聚合（ROMP）和巯基-迈克尔加成点击反应，成功合成了带有巯基的长链支化聚合物（LCHBP）。首先，通过在活性 ROMP 完成后立即向反应混合物中添加内部顺式烯烃终止剂，制备出一种带有末端丙烯酰基和许多支化巯基的单官能化聚合物，然后将其用作随后的丙烯酰基和巯基之间的巯基-烯反应中的 ABn 型大分子单体，随着反应时间的延长，生成 LCHBP。然后将金纳米粒子共价键合到巯基功能化的 LCHBP 表面上，制备出新型杂化纳米结构，这是此类功能化易位聚合物的一个有趣应用。这种简单的方法可以扩展到具有复杂结构和可调多功能性的新型纳米材料的制备。
