School of Polymer Science and Engineering, The University of Southern Mississippi, 118 College Dr. #5050, Hattiesburg 39406, MS, USA.
Dalton Trans. 2018 Jul 3;47(26):8663-8669. doi: 10.1039/c8dt01392f.
We report on the use of visible light as the driving force for the intramolecular dimerization of pendant anthracene groups on a methacrylic polymer to induce the formation of single-chain nanoparticles (SCNPs). Using a 532 nm green laser light source and platinum octaethylporphyrin as a sensitizer, we first demonstrated the use of TTA-UC to dimerize monomeric anthracene, and subsequently applied this concept to dilute poly((methyl methacrylate)-stat-(anthracenyl methacrylate)) samples. A combination of triple-detection size-exclusion chromatography, atomic force microscopy, and UV-visible spectroscopy confirmed the formation of the SCNPs. This report pioneers the use of TTA-UC to drive photochemical reactions in polymeric systems, and showcases the potential for TTA-UC in the development of nanoobjects.
我们报告了可见光作为驱动力，促使支链上的蒽基团在甲基丙烯酸聚合物内发生分子间二聚化，从而诱导形成单链纳米颗粒（SCNPs）。我们使用 532nm 绿光激光源和八乙基卟啉作为敏化剂，首次展示了 TTA-UC 用于二聚单体蒽的应用，随后将这一概念应用于稀释的聚（甲基丙烯酸甲酯-嵌段-（蒽基甲基丙烯酸酯））样品中。三重检测尺寸排阻色谱、原子力显微镜和紫外可见光谱的组合证实了 SCNPs 的形成。本报告开创了使用 TTA-UC 在聚合体系中驱动光化学反应的先河，并展示了 TTA-UC 在纳米物体开发中的潜力。
