Copolymerize Conventional Vinyl Monomers to Degradable and Water‐Soluble Copolymers with a Fluorescence Property,Macromolecular Chemistry and Physics

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Copolymerize Conventional Vinyl Monomers to Degradable and Water‐Soluble Copolymers with a Fluorescence Property
Macromolecular Chemistry and Physics ( IF 2.5 ) Pub Date : 2020-11-18 , DOI: 10.1002/macp.202000263
Hongjun Yang ₁ , Jiadong Zhang ₁ , Yiye Song ₂ , Li Jiang ₁ , Qimin Jiang ₁ , Xiaoqiang Xue ₁ , Wenyan Huang ₁ , Bibiao Jiang ₁

Affiliation

In the copolymerization of acrylamide (Am) and hydroxyethyl acrylate (HEA), the initial product is a carbon chain polymer with hydroxyl and amide side groups. However, in the present work, these two conventional vinyl monomers are combined into a degradable heterochain copolymer by using a phosphazene base, t‐BuP₄, as a catalyst. NMR not only confirms that the backbone of the resulting copolymer is composed of ester–ether units and amide units but also suggests that the resulted secondary amide group retains an active hydrogen and can further react with another olefin, which would result in branching or gelation. Thermogravimetric analysis (TGA) shows a signal indicating decomposition at 205–509 °C, verifying the uniform composition of the sample. More interestingly, the synthesized copolymer can dissolve in water and exhibits aggregation‐enhanced emission (AEE). Additionally, the aqueous copolymer solution has a high selectivity and sensitivity for Ba²⁺, Fe²⁺, and Fe³⁺ cations. Hence, it is believed that this method for constructing degradable polymers may offer innovative insights into polymer synthesis and application.

中文翻译：

将常规乙烯基单体共聚为具有荧光性质的可降解和水溶性共聚物

在丙烯酰胺（Am）和丙烯酸羟乙酯（HEA）的共聚中，初始产物是具有羟基和酰胺侧基的碳链聚合物。但是，在目前的工作中，这两种常规的乙烯基单体是通过使用磷腈碱t- BuP ₄组合成可降解的杂链共聚物的，作为催化剂。NMR不仅证实所得共聚物的主链由酯醚单元和酰胺单元组成，而且还暗示所得仲酰胺基团保留了活性氢并可以进一步与其他烯烃反应，这将导致分支或凝胶化。热重分析（TGA）显示了一个信号，指示在205–509°C时发生分解，从而验证了样品的均匀成分。更有趣的是，合成的共聚物可溶于水并表现出聚集增强发射（AEE）。另外，共聚物水溶液对Ba 2 ⁺，Fe ²⁺和Fe ³⁺具有很高的选择性和敏感性。阳离子。因此，据信这种用于构建可降解聚合物的方法可以为聚合物的合成和应用提供创新的见解。

更新日期：2021-01-07

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