Liu Chao, Wang Guangrong, Zhang Liying, Fan Fuqiang, Zhang Xuemin, Fu Yu, Wang Tieqiang
Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, P. R. China.
ACS Appl Mater Interfaces. 2022 Feb 9;14(5):7200-7207. doi: 10.1021/acsami.1c24270. Epub 2022 Jan 28.
At present, it remains challenging and desirable to prepare dynamic color-changing materials with wide viewing angles for practical applications. Herein, we proposed a responsive asymmetric metal-insulator-metal (MIM) Fabry-Perot resonance cavity to achieve dynamic color display with high viewing-angle tolerance. The responsive asymmetric MIM cavity is constructed with thermal-responsive poly(-isopropyl acrylamide) (PNIPAm) brush as the mid-insulator layer sandwiched by two different metallic layers (Sn and Ag). The as-prepared MIM cavity shows both improved viewing-angle tolerance owing to the asymmetric architecture of the cavity and a wide tunable color gamut because of the thermal responsiveness of the mid PNIPAm layer. Remarkably, the as-prepared asymmetric MIM resonance cavity also possesses a relatively fast response rate and good repeatability. Together, with all these advantages, the proposed responsive asymmetric MIM cavity may open a new pathway to prepare high-performance color display material for future practical optical applications.
目前，制备具有宽视角的动态变色材料以用于实际应用仍然具有挑战性且令人期待。在此，我们提出了一种响应式非对称金属-绝缘体-金属（MIM）法布里-珀罗共振腔，以实现具有高视角耐受性的动态颜色显示。响应式非对称MIM腔由热响应性聚（N-异丙基丙烯酰胺）（PNIPAm）刷作为中间绝缘层构建而成，该中间绝缘层夹在两个不同的金属层（Sn和Ag）之间。所制备的MIM腔由于腔的非对称结构而具有改善的视角耐受性，并且由于中间PNIPAm层的热响应性而具有宽的可调色域。值得注意的是，所制备的非对称MIM共振腔还具有相对较快的响应速率和良好的重复性。综合所有这些优点，所提出的响应式非对称MIM腔可能为未来实际光学应用制备高性能颜色显示材料开辟一条新途径。
