Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 10, Issue 14, Pages 7811-7817Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2ta00817c
Keywords
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Funding
- National Natural Science Foundation of China [21774036]
- Guangdong Province Science Foundation [2017GC010429]
- Science and Technology Program of Guangzhou [202002030329]
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A eco-friendly and scalable strategy is developed to fabricate fluorescent cellulose films with aggregation-induced emission phenomena. By using cellulose acetoacetate 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. These films exhibit a perfect combination of properties including large-area processability, superior UV-blocking ability, high transparency, remarkable strength, excellent biocompatibility and controllable biodegradability, showing potential applications in UV protection, anti-counterfeiting and remote LED devices.
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.
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