期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 42, 期 7, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.202000701
关键词
information records; ion-hybrid crosslink; mechanical properties; photochromic hydrogels
资金
- National Natural Science Foundation of China (NSFC) [51603065, 51273059, 51903079]
By introducing hydrophobic molecule spiropyran (SP) into a Ca2+ crosslinked hydrogel, a novel information record material with super-strong mechanical strength and photoinduced reversible color changes is achieved, exhibiting excellent modulus of elasticity and tensile stress.
Rewritable information record materials usually demand not only reversibly stimuli-responsive ability, but also strong mechanical properties. To achieve one photochromic hydrogel with super-strong mechanical strength, hydrophobic molecule spiropyran (SP) has been introduced into a copolymer based on ion-hybrid crosslink. The hydrogels exhibit both photoinduced reversible color changes and excellent mechanical properties, i.e., the tensile stress of 3.22 MPa, work of tension of 12.8 MJ m(-3), and modulus of elasticity of 8.6 MPa. Moreover, the SP-based Ca2+ crosslinked hydrogels can be enhanced further when exposed to UV-light via ionic interaction coordination between Ca2+, merocyanine (MC) with polar copolymer chain. In particular, hydrogels have excellent reversible conversion behavior, which can be used to realize repeatable writing of optical information. Thus, the novel design is demonstrated to support future applications in writing repeatable optical information, optical displays, information storage, artificial intelligence systems, and flexible wearable devices.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据