可溶性、端基官能化多烯和聚乙炔嵌段共聚物的直接合成。

Direct synthesis of soluble, end-functionalized polyenes and polyacetylene block copolymers.

作者信息

Scherman Oren A, Rutenberg Isaac M, Grubbs Robert H

机构信息

Arnold and Mabel Beckman Laboratories for Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA.

出版信息

J Am Chem Soc. 2003 Jul 16;125(28):8515-22. doi: 10.1021/ja0301166.

DOI:10.1021/ja0301166

PMID:12848557

Abstract

The ring-opening metathesis polymerization (ROMP) of 1,3,5,7-cyclooctatetraene (COT) in the presence of a chain transfer agent (CTA) with a highly active ruthenium olefin metathesis catalyst resulted in the formation of soluble polyenes. Small molecule CTAs containing an internal olefin and a variety of functional groups resulted in soluble telechelic polyenes with up to 20 double bonds. Use of polymeric CTAs with an olefin terminus resulted in polyacetylene block copolymers. These materials were subjected to a variety of solution and solid phase characterization techniques including (1)H NMR, UV/vis, and FT-IR spectroscopies, as well as MALDI-TOF MS and AFM.

摘要

在具有高活性钌烯烃复分解催化剂的链转移剂（CTA）存在下，1,3,5,7-环辛四烯（COT）的开环易位聚合（ROMP）反应生成了可溶性多烯。含有内烯烃和各种官能团的小分子CTA生成了具有多达20个双键的可溶性遥爪多烯。使用具有烯烃端基的聚合物CTA生成了聚乙炔嵌段共聚物。这些材料采用了多种溶液和固相表征技术，包括¹H NMR、紫外/可见光谱和傅里叶变换红外光谱，以及基质辅助激光解吸电离飞行时间质谱（MALDI-TOF MS）和原子力显微镜（AFM）。