Fabrication of Photoprocessable Materials via Photopolymerization Using an Acid‐Induced Photocleavable Platinum‐Acetylide Crosslinker
Fabrication of Photoprocessable Materials via Photopolymerization Using an Acid‐Induced Photocleavable Platinum‐Acetylide Crosslinker
复制标题
使用酸诱导光裂解铂-乙交联剂通过光聚合制造可光加工材料
DOI：
10.1002/ange.202305374
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发表时间：
2023
影响因子：
--
通讯作者：
Jun Terao
中科院分区：
文献类型：
--
作者：
Takashi Kaneko;Go M. Russell;Yutaro Kawano;Hiroshi Masai;Jun Terao
光聚合和光加工是成型和调整聚合物材料的核心技术。然而，由于其矛盾的光反应性，它们与单一材料不相容。在本文中，酸诱导的光可裂解交联剂，一种被全甲基化环糊精覆盖的铂-乙炔化物络合物，能够通过与N-（2-羟乙基）丙烯酰胺的光聚合来制造可光处理的材料。聚合物网络通过365 nm照射成型，以及通过与作为酸性添加剂的HCl在365 nm UV光或470 nm可见光下在光敏剂存在下的协同反应软化和降解。 此外，将交联剂施加到由365 nm照射触发的光粘合剂。 通过酸诱导的光降解，在相同波长和强度的照射下，可按需分离粘附。因此，酸诱导的光裂解允许在各种波长的各种光下集成光诱导成型和加工，为聚合物技术开辟了新的策略。
Photopolymerization and photoprocessing are core technologies for molding and tuning polymer materials. However, they are incompatible with single materials owing to their contradictory photoreactivity. Herein, an acid‐induced photocleavable crosslinker, a platinum–acetylide complex covered by permethylated cyclodextrins, enables the fabrication of photoprocessable materials via photopolymerization withN‐(2‐hydroxyethyl)acrylamide. The polymer networks are molded by 365 nm irradiation as well as softened and degraded by a cooperative reaction with HCl as an acidic additive under 365 nm UV light, or 470 nm visible light in the presence of a photosensitizer. Moreover, the crosslinker is applied to a photoadhesive triggered by 365 nm irradiation. The adhesion is detachable on‐demand through acid‐induced photodegradation with the same wavelength and intensity of irradiation. Thus, acid‐induced photocleavage allows the integration of light‐induced molding and processing under various lights of various wavelengths, opening up new strategies for polymer technologies.