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Photodegradable Polymer Capsules Fabricated via Interfacial Photocross-linking of Spherical Polymer Particles
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2020-08-13 , DOI: 10.1021/acsapm.0c00472 Yukiya Kitayama 1 , Toshifumi Takeuchi 2
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2020-08-13 , DOI: 10.1021/acsapm.0c00472 Yukiya Kitayama 1 , Toshifumi Takeuchi 2
Affiliation
Functional capsule polymer particles have a variety of interesting applications, including stimuli-responsive delivery systems; however, a major drawback is that conventional fabrication methods typically require the use of sacrificial templates, toxic solvents, and precision polymer synthesis. Herein, photodegradable hollow/capsule polymer particles were fabricated by the interfacial photocross-linking of spherical polymer particles possessing photoreactive coumarin groups, thereby circumventing the aforementioned issues. Using this interfacial photocross-linking approach, shell-cross-linked hollow polymer particles were obtained directly from simple spherical polymer particles via a facile procedure. Encapsulation of various molecules in the hollow polymer particles was achieved by postintroduction based on the solvent exchange procedure. Furthermore, the [2π + 2π] dimerization of coumarin groups is a photoreversible reaction, with the cycloaddition and cycloreversion reactions occurring under photoirradiation at longer and shorter wavelengths, respectively. As a result, the fabricated hollow/capsule polymer particles were photodegradable, and temporal control of this process was achieved.
中文翻译:
通过球形聚合物颗粒的界面光交联制备的可光降解聚合物胶囊
功能性胶囊聚合物颗粒具有多种有趣的应用,包括刺激响应性递送系统;然而,主要缺点是常规制造方法通常需要使用牺牲模板,有毒溶剂和精确的聚合物合成。在此,通过具有光反应性香豆素基团的球形聚合物颗粒的界面光交联来制备可光降解的中空/胶囊聚合物颗粒,从而避免了上述问题。使用这种界面光交联方法,可以通过简单的方法直接从简单的球形聚合物颗粒中获得壳交联的中空聚合物颗粒。通过基于溶剂交换程序的后引入,将各种分子封装在中空聚合物颗粒中。此外,香豆素基团的[2π+2π]二聚化是光可逆反应,在光照射下,分别在更长和更短的波长下发生环加成和环还原反应。结果,所制造的中空/胶囊聚合物颗粒是可光降解的,并且实现了该过程的时间控制。
更新日期:2020-09-11
中文翻译:
通过球形聚合物颗粒的界面光交联制备的可光降解聚合物胶囊
功能性胶囊聚合物颗粒具有多种有趣的应用,包括刺激响应性递送系统;然而,主要缺点是常规制造方法通常需要使用牺牲模板,有毒溶剂和精确的聚合物合成。在此,通过具有光反应性香豆素基团的球形聚合物颗粒的界面光交联来制备可光降解的中空/胶囊聚合物颗粒,从而避免了上述问题。使用这种界面光交联方法,可以通过简单的方法直接从简单的球形聚合物颗粒中获得壳交联的中空聚合物颗粒。通过基于溶剂交换程序的后引入,将各种分子封装在中空聚合物颗粒中。此外,香豆素基团的[2π+2π]二聚化是光可逆反应,在光照射下,分别在更长和更短的波长下发生环加成和环还原反应。结果,所制造的中空/胶囊聚合物颗粒是可光降解的,并且实现了该过程的时间控制。