journal article

Journal Article

ACS Sustainable Chemistry and Engineering. 2023, 11(27), p. 10061-10073

Cellulose Luminescent Hydrogels Loaded with Stable Carbon Dots for Duplicable Information Encryption and Anti-counterfeiting

American Chemical Society

English

2023-07-10

https://doi.org/10.1021/acssuschemeng.3c01838

Wang J., Du P., Hsu Y.I., et al. Cellulose Luminescent Hydrogels Loaded with Stable Carbon Dots for Duplicable Information Encryption and Anti-counterfeiting. ACS Sustainable Chemistry and Engineering 11, 10061 (2023); https://doi.org/10.1021/acssuschemeng.3c01838.

Luminescent hydrogels with flexibility and biocompatibility have attracted considerable interest in anti-counterfeiting application. However, conventional luminous substance is prone to release into the surrounding environment, causing accumulation and biotoxicity. The green synthesis of repeatable fluorescent materials from biomass remains challenging. Herein, we report the assembly of nano-cellulose hydrogel doped with naturally originated and multiple active sited carbon dots (CDs) and demonstrate the sustainable usage of information encryption. The problem of CDs leaching from the hydrogel matrix was solved via strong chemical interactions between the CDs and cellulose nanofibers. The facilely prepared hydrogels showed extraordinary mechanical properties and fatigue resistance (i.e., the stress, compressive modulus, and compressive toughness were up to 1607.30 kPa, 368.33 kPa, and 191.54 kJ/m³, respectively). Furthermore, this cellulose-based gel displayed bright green fluorescence under UV light, which could be quenched by Fe³⁺ ions and recovered in an ascorbic acid/EDTA-2Na mixture solution. Therefore, coded information can be easily input and interpreted via ionoprinting technique, realizing a simple display and erasing procedure. This elaborately designed biomimetic hydrogel can serve as effective communication media to improve security and expand critical applications in optoelectronic storage devices.

This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Sustainable Chemistry and Engineering, © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acssuschemeng.3c01838.

97134

Cellulose Luminescent Hydrogels Loaded with Stable Carbon Dots for Duplicable Information Encryption and Anti-counterfeiting

American Chemical Society

English

2023-07-10

ACS Sustainable Chemistry and Engineering

11

27

10061

10073

https://doi.org/10.1021/acssuschemeng.3c01838

https://hdl.handle.net/11094/97134