Polymeric materials that undergo photoinduced degradation have wide application in fields such as controlled release. Most methods for photoinduced degradation rely on the UV or near-UV region of the electromagnetic spectrum; however, use of the deeply penetrating and benign wavelengths of visible light offers a multitude of advantages. Here we report a lactone monomer for ring-opening copolymerizations to introduce a sacrificial linker into a polymer backbone which can be cleaved by reactive oxygen species which are produced by a photocatalyst under visible light irradiation. We find that copolymers of this material readily degrade under visible light. We followed polymer degradation using a continuous flow size exclusion chromatography system, the components of which are described herein.

中文翻译：

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通过连续 Atline SEC 分析监测可生物降解聚酯中用于加速光诱导降解的牺牲连接体


光致降解高分子材料在控释等领域有着广泛的应用。大多数光诱导降解方法依赖于电磁波谱的紫外线或近紫外线区域；然而，使用具有深度穿透性和良性波长的可见光具有许多优点。在这里，我们报道了一种用于开环共聚的内酯单体，以将牺牲连接基引入聚合物主链中，该连接基可以被可见光照射下光催化剂产生的活性氧物质裂解。我们发现这种材料的共聚物在可见光下很容易降解。我们使用连续流动尺寸排阻色谱系统跟踪聚合物降解，其组件在本文中描述。