Supramolecular alternating block copolymers via metal coordination.
Supramolecular alternating block copolymers via metal coordination.
复制标题
通过金属配位的超分子交替嵌段共聚物。
作者：
S. Yang;A. Ambade;M. Weck
合成了一种双金属Ru-烯烃歧化引发剂，并将其用于官能化降冰片烯的聚合，得到了存在于聚合物链两端的聚合物。利用这种双Ru引发剂策略，并将其与功能链终止剂相结合，高效地合成了SCS-Pd(II)钳形或吡啶功能化对称遥螺旋聚合物。通过1H核磁共振波谱分析，证实了末端官能团的掺入。遥链聚合物通过末端识别单元之间的金属配位自组装成嵌段共聚物。用1H核磁共振波谱监测了自组装过程，揭示了近乎定量的官能化。用粘度法和动态光散射法对所合成的超分子嵌段共聚物进行了表征。
A bimetallic ruthenium olefin metathesis initiator was synthesized and used to polymerize functionalized norbornenes, affording polymers that are living at both polymer chain-ends. Using this bis-ruthenium initiator strategy and combining it with functional chain-terminators, highly-efficient syntheses of either SCS-Pd(II) pincer- or pyridine-functionalized symmetrical telechelic polymers were developed. The terminal functional group incorporation was confirmed by 1H NMR spectroscopy analyses. The telechelic polymers were self-assembled into block copolymers by means of metal coordination between corresponding terminal recognition units. The self-assembly process was monitored by 1H NMR spectroscopy revealing nearly quantitative functionalization. The resulting supramolecular block copolymers were further characterized by viscometry and dynamic light scattering.
影响因子：
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作者：
Gordon, EJ;Gestwicki, JE;Kiessling, LL
通讯作者：
Kiessling, LL