Dithiol-yne Polymerization: Comb Polymers with Poly(ethylene glycol) Side chains,ACS Polymers Au

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Dithiol-yne Polymerization: Comb Polymers with Poly(ethylene glycol) Side chains
ACS Polymers Au ( IF 4.7 ) Pub Date : 2022-10-14 , DOI: 10.1021/acspolymersau.2c00045
Brennan J. Curole ₁ , William J. Broussard ₁ , Amman Nadeem ₁ , Scott M. Grayson ₁

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Recently dithiol-yne click chemistry and its role in the formation of cross-linked polymer networks and postpolymerization functionalizations has been studied; however, no research has considered this technique to form comb polymers with regular side chains. Here we report the first example of a grafted-through step-growth comb polymer via the utilization of dithiol-yne “click chemistry”. First, we exhibited the efficacy of this reaction to produce modest-molecular-weight combs (M_n = 16 kDa). Second, we displayed the ability to precisely control the length of the side chains of these combs along with the space between the side chains by using various molecular weights of propargylated PEG chains and a variety of alkanedithiol backbone spacers. The primary species of these reactions were macrocyclic comb polymers, with a smaller amount of dithiol-terminated comb polymers.

中文翻译：

二硫醇-炔聚合：具有聚（乙二醇）侧链的梳状聚合物

最近研究了二硫醇-炔点击化学及其在交联聚合物网络形成和聚合后功能化中的作用；然而，没有研究考虑过这种技术来形成具有规则侧链的梳状聚合物。在这里，我们报告了第一个通过利用二硫醇炔“点击化学”接枝的逐步生长梳形聚合物的例子。首先，我们展示了该反应产生适度分子量梳状结构 ( M _n= 16 kDa)。其次，我们展示了通过使用各种分子量的炔丙基化 PEG 链和各种链烷二硫醇主链间隔子来精确控制这些梳的侧链长度以及侧链之间的空间的能力。这些反应的主要物质是大环梳状聚合物，具有少量二硫醇封端的梳状聚合物。

更新日期：2022-10-14

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