文献类型：期刊文献

英文题名：High-Strength PVA/Cellulosic hydrogels with Acid/Base and thermo dual-responsive fluorescence

作者：Feng, Xuezhen[1,2,3] Tian, Yabing[1] Gu, Gaoyuan[5,6] Wang, Chao[1] Shang, Shibin[1] Huang, Xujuan[4] 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]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Res, Nanjing 210037, Peoples R China;[4]Yancheng Inst Technol, Sch Chem & Chem, Yancheng 210042, Jiangsu, Peoples R China;[5]Bohai Univ, Coll Chem & Mat Engn, Jinzhou 121013, Liaoning, Peoples R China;[6]Southwest Petr Univ, Sch New Energy & Mat, Chengdu 610500, Peoples R China

年份：2024

卷号：500

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20244317229641);Scopus(收录号：2-s2.0-85206501367);WOS:【SCI-EXPANDED(收录号:WOS:001339030700001)】；

基金：This work was supported by the National Natural Science Foundation of China [grant number 32071709] .

语种：英文

外文关键词：Cellulosic hydrogels; Salting-out; Fluorescent; Anti-counterfeiting; High-strength

摘要：Fluorescent polymer hydrogels (FPHs) with tunable luminous features have attracted immense interest. Nevertheless, until now, the development of most FPHs had been hindered by their poor mechanical properties and limited application range. This study presents a novel strategy to fabricate high-strength, multi-application cellulosic fluorescent hydrogels using polyvinyl alcohol (PVA) and fluorescent nanocellulose (containing pyrene tetracarboxylic acid) through a salting-out process. Such strategy enables cellulosic hydrogels with high tensile strength and toughness (26.45 MPa and 201.27 MJ/m3), 3 ), compressive strength (165.58 MPa), dual-responsive fluorescence (acid/base and temperature), and multiple applications. Specifically, cellulosic hydrogels exhibit fluorescence switching through the utilization of lanthanide metals (Eu3+/Tb3+), 3 + /Tb 3 + ), acid/base, and temperature, owing to the presence of perylene tetracarboxylic acid as a fluorescent moiety with an aggregation-caused quenching (ACQ) effect. Based on this, the resulting hydrogels were utilized in rewritable display systems, temperature monitoring, and encrypted QR codes. This study envisions opening new possibilities for the development of high-strength fluorescent hydrogels with multiple applications.