Super-Strong, Super-Stiff, and Super-Tough Fluorescent Alginate Fibers with Outstanding Tolerance to Extreme Conditions

被引：0

作者：

Wu, Zhongtao ^{[1
]}

Wang, Kang ^{[1
,2
]}

Chen, Jia ^{[3
]}

Chang, Jiahao ^{[4
]}

Zhu, Shanhui ^{[1
]}

Xie, Congxia ^{[1
]}

Liu, Yun ^{[3
]}

Wang, Zhen ^{[5
]}

Zhang, Lei ^{[1
]}

机构：

[1] Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, Key Lab Opt Elect Sensing & Analyt Chem Life Sci, MOE,Shandong Key Lab Biochem Anal, Qingdao 266042, Peoples R China

[2] Huadian Power Int Corp LTD, Laicheng power plant, 288 Changshao North Rd, Laiwu 271100, Shandong, Peoples R China

[3] Guangdong Med Univ, Guangdong Key Lab Res & Dev Nat Drugs, Zhanjiang 524023, Peoples R China

[4] Shandong Second Med Univ, Sch Clin Med, Weifang 261053, Peoples R China

[5] Chinese Acad Med Sci & Peking Union Med Coll, Canc Hosp, Natl Clin Res Ctr Canc, Natl Canc Ctr,Dept Thorac Surg, Beijing, Peoples R China

来源：

SMALL | 2024年 / 20卷 / 50期

基金：

中国国家自然科学基金;

关键词：

alginate; fluorescent fiber; high performance mechanics; super-strong fiber; super-tough biomaterial; CALCIUM ALGINATE; STRENGTH;

D O I：

10.1002/smll.202406163

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The combination of multiple physical properties is of great importance for widening the application scenarios of biomaterials. It remains a great challenge to fabricate biomolecules-based fibers gaining both mechanical strength and toughness which are comparable to natural spider dragline silks. Here, by mimicking the structure of dragline silks, a high-performance fluorescent fiber Alg-TPEA-PEG is designed by non-covalently cross-linking the polysaccharide chains of alginate with AIEgen-based surfactant molecules as the flexible contact points. The non-covalent cross-linking network provides sufficient energy-dissipating slippage between polysaccharide chains, leading to Alg-TPEA-PEG with highly improved mechanical performances from the plastic strain stage. By successfully transferring the extraordinary mechanical performances of polysaccharide chains to macroscopic fibers, Alg-TPEA-PEG exhibits an outstanding breaking strength of 1.27 GPa, Young's modulus of 34.13 GPa, and toughness of 150.48 MJ m-3, which are comparable to those of dragline silk and outperforming other artificial materials. More importantly, both fluorescent and mechanical properties of Alg-TPEA-PEG can be well preserved under various harsh conditions, and the fluorescence and biocompatibility facilitate its biological and biomedical applications. This study affords a new biomimetic designing strategy for gaining super-strong, super-stiff, and super-tough fluorescent biomaterials. A tetraphenylethene-containing surfactant is designed as the flexible contact point between polysaccharide chains of alginate for fabricating fluorescent high-performance fibers. Such fibers gain super-strong, super-stiff, and super-tough mechanical properties, wide tolerance to pH and temperature, insulation properties, and good biosafety. This study affords a new design strategy for gaining biomacromolecule-based materials with a combination of multiple physicochemical properties. image

引用

页数：11