Green fabrication of high strength, transparent cellulose-based films with durable fluorescence and UV-blocking performance

作者：Peng, Fang; Liu, Hongchen^*; Xiao, Dongdong; Guo, Lei; Yue, Fengxia; Wurfe, Hendryk; Heinze, Thomas; Qi, Haisong^*

来源：Journal of Materials Chemistry A, 2022, 10(14): 7811-7817.

DOI：10.1039/d2ta00817c

• QUANTUM DOTS
• NANOCOMPOSITE
• NANOPARTICLES
• FACILE
• STATE

Fluorescent cellulose films offer exciting properties and functionalities. However, they are normally prepared by using unstable physically absorbed or complicated chemically grafted luminogens under harsh conditions. Herein, an eco-friendly and scalable strategy is performed to fabricate fluorescent cellulose films with aggregation-induced emission phenomena. By casting cellulose acetoacetate (CAA) as the matrix for in situ modification, a series of fluorescent cellulose films with different AIE-active groups are designed based on the Hantzsch reaction. Compared with most fluorescent films, they exhibit a perfect combination of properties including large-area processability, superior UV-blocking ability, high transparency (>90%), remarkable strength (>200 MPa), excellent biocompatibility and controllable biodegradability. On account of these extraordinary capabilities, they demonstrate potential application in UV protection, anti-counterfeiting and remote LED devices.

• 单位
  上海交通大学