4.6 Article

Flexible Photonic Cellulose Nanocrystal Films as a Platform with Multisensing Functions

期刊

ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 8, 期 50, 页码 18484-18491

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.0c06174

关键词

cellulose nanocrystal; chiral nematic; flexibility; colorimetric sensing

资金

  1. National Natural Science Foundation of China [51773133]
  2. Science and Technology Fund for Distinguish Young Scholars of Sichuan Province [2019JDJQ0025]
  3. State Key Laboratory of Polymer Materials Engineering [sklpme2020-3-09]
  4. Fundamental Research Funds for the Central Universities

向作者/读者索取更多资源

Biomimetic optical cellulose nanocrystal (CNC) materials have shown great potential for application in colorimetric sensing, anticounterfeiting, and decorative coatings because of simple recognition by the naked eye; however, how to simultaneously solve the inherent brittleness of CNCs as well as achieve multisensing functions is still a big challenge. Here, we propose a new coassembly strategy of CNCs and citric acid (CA) to fabricate freestanding photonic CNC films. The chiral nematic structure and visible structural colors can be adjusted in a wide color range by varying the CA content. Owing to the plasticizing effect, the resulting CNC-CA films display high flexibility and can be folded freely. Notably, such films can sense different external signals, including compression, ethanol and alkali, by changing apparent structural colors. Additionally, for volatile chemicals, the color changes are reversible, ensuring repeating applications. Given the high mechanical performance and multisensing performance, this method represents a simple but effective way to construct highly flexible and multifunctional photonic CNC materials.

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。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据