文献类型：期刊文献

英文题名：Biodegradable, High-Strength, Antiswelling Fluorescent Cellulosic Hydrogels via Salting-Out for Underwater Information Encryption and Anticounterfeiting

作者：Feng, Xuezhen[1,2] Gu, Gaoyuan[3,4] Tian, Yabing[1] Shang, Shibin[1] Huang, Xujuan[5] Jiang, Jianxin[2] Song, Zhanqian[1] Zhang, Haibo[1]

第一作者：Feng, Xuezhen

通信作者：Zhang, HB[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Natl Engn Lab Biomass Chem Utilizat, Nanjing 210042, Peoples R China;[2]Beijing Forestry Univ, Coll Mat Sci & Technol, Beijing 100083, Peoples R China;[3]Bohai Univ, Coll Chem & Mat Engn, Jinzhou 121013, Liaoning, Peoples R China;[4]Southwest Petr Univ, Sch New Energy & Mat, Chengdu 610500, Peoples R China;[5]Yancheng Inst Technol, Sch Chem & Chem, Yancheng 210042, Jiangsu, Peoples R China

年份：2025

卷号：13

期号：30

起止页码：11745-11755

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;EI(收录号：20253419018027);Scopus(收录号：2-s2.0-105013571560);WOS:【SCI-EXPANDED(收录号:WOS:001537070900001)】；

基金：This work is supported by National Natural Science Foundation of China (32071709).

语种：英文

外文关键词：Salting-out; Cellulosic hydrogels; Anticounterfeiting; Hydrophobic; Antiswelling

摘要：Fluorescent cellulosic hydrogels are suitable for information encryption and anticounterfeiting. However, their underwater application remains a major challenge due to insufficient antiswelling and mechanical properties affecting anticounterfeiting accuracy and durability. This study reports a strategy to prepare high-strength, biodegradable, and antiswelling fluorescent cellulosic hydrogels through salting-out and hydrophobic interactions. Salting-out and hydrophobic polycyclic structures (acrylpimaric acid) enhance the H-bonds, hydrophobic interactions, and coordination bonds of hydrogels, increasing the network cross-linking density. The subsequent improvement in the energy dissipation mechanisms results in a hydrogel with high compressive strength (18.52 MPa) and tensile toughness (12.16 MJ/m3). Furthermore, the enhanced network density and hydrophobic interactions provided the hydrogel with a high diffusion energy barrier, restricting the ingress and mobility of H2O and resulting in a swelling ratio (SR) of 0.04%. This hydrogel was capable of complete biodegradation in soil within 20 days. The perylene-3,4,9,10-tetracarboxylic acid (PTCA)-Eu/Tb ligands imparted fluorescence to the hydrogel; when they are combined with Python, they enable efficient information encryption and decryption underwater. Furthermore, the biodegradable fluorescent cellulosic hydrogel, prepared from inexpensive and ecofriendly raw materials (cellulose and rosin), offers a strategy for the sustainable development of underwater anticounterfeiting materials.