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A Single Functionalization Agent for Heterotelechelic ROMP Polymers
ACS Macro Letters ( IF 5.1 ) Pub Date : 2022-06-08 , DOI: 10.1021/acsmacrolett.2c00234
Mohammad Yasir 1 , Manvendra Singh 1 , Andreas F M Kilbinger 1
Affiliation  

Heterotelechelic polymers are an important class of materials finding applications in bioconjugation, imaging, sensing, and synthesis of organic/inorganic hybrid systems with interesting features. However, the synthesis of such polymers is challenging. Here, we report a mechanistically unique and most efficient method based on a single functionalization agent to prepare heterotelechelic polymers by a ring-opening metathesis polymerization. Different functionalization agents can be synthesized in one simple step from inexpensive commercial starting materials. The functionalization agents initially generate a functional initiator from commercial Grubbs’ first-generation ruthenium benzylidene catalyst. During this process, a functional dihydrofuran derivative is produced. After functional initiation and propagation of a suitable monomer, the dihydrofuran derivative functionally terminates the polymerization yielding a primary alcohol-terminated heterotelechelic polymer. Molecular weight control is achieved by varying the ratio between monomer and Grubbs’ first-generation catalyst. This method may emerge as a popular choice to prepare heterotelechelic polymers due to its simplicity and efficiency.

中文翻译:

杂遥爪ROMP聚合物的单一功能化剂

异螯合聚合物是一类重要的材料,可用于生物共轭、成像、传感和具有有趣特征的有机/无机杂化系统的合成。然而,这种聚合物的合成具有挑战性。在这里,我们报告了一种机械上独特且最有效的方法,该方法基于单一功能化剂,通过开环复分解聚合制备异质遥爪聚合物。不同的功能化试剂可以从廉价的商业起始材料通过一个简单的步骤合成。功能化试剂最初从商业 Grubbs 的第一代亚苄基钌催化剂生成功能引发剂。在这个过程中,产生了一种功能性二氢呋喃衍生物。在合适的单体功能引发和增长后,二氢呋喃衍生物在功能上终止聚合,产生伯醇封端的杂遥爪聚合物。通过改变单体和 Grubbs 的第一代催化剂之间的比例来控制分子量。由于其简单和高效,这种方法可能成为制备异质遥爪聚合物的流行选择。
更新日期:2022-06-08
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