Tough Polymeric Hydrogels Based on Amino Acid Derivative Mediated Dynamic Metal Coordination Bonds

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外文摘要：The development of physically crosslinked hydrogels with excellent mechanical and sensing properties is of importance for expand-ing the practical applications of intelligent soft hydrogel materials.Herein,after copolymerization of hydroxyl-containing amino acid derivative N-acryloyl serine(ASer)with acrylamide(AM),we introduce Zr4+through an immersion strategy to construct metal ion-toughened non-covalent crosslinked hydrogels(with tensile strength of up to 5.73 MPa).It is found that the synergistic coordination of hydroxyl and carboxyl groups with Zr4+substantially increases the crosslinking density of the hydrogels,thereby imparting markedly superior mechanical properties compared to hydroxyl-free Zr4+-crosslinked hydrogels,such as N-acryloyl alanine(AAla)copolymerized with AM hydrogels(with tensile strength of 2.98 MPa).Through the adjustment of the composition of the copolymer and the density of coordination bonds,the mechanical properties of the hydrogels can be modulated over a wide range.Additionally,due to the introduction of metal ions and the dynamic nature of coordination bonds,the hy-drogels also exhibit excellent sensing performance and good self-recovery properties,paving the way for the development of flexible electronic substrates with outstanding comprehensive performances.

外文关键词：

HydrogelAmino acidMetal coordinationMechanical performanceFlexible sensor

作者：

Meng Li、Meng-Yuan Zhang、Wu-Xuan Lei、Zhu-Ting Lv、Qing-Hua Shang、Zheng Zhao、Jiang-Tao Li、Yi-Long Cheng

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作者单位：

Engineering Research Center of Energy Storage Materials and Devices,Ministry of Education,School of Chemistry,Xi'an Jiaotong University,Xi'an 710049,China

Polymer Materials & Engineering Department,School of Materials Science & Engineering,Chang an University,Xi'an 710064,China

School of Electrical Engineering,Xi'an Jiaotong University,Xi'an 710049,China

Department of Nuclear Medicine,the First Affiliated Hospital of China,Xi'an Jiaotong University,Xi'an 710049,China

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基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of Chinathe"Young Talent Support Plan"of Xi'an Jiaotong UniversityFundamental Research Funds for the Central Universities

项目编号：

5232230952173139xzy022023018

出版年：

2024

DOI：

10.1007/s10118-024-3177-6

高分子科学(英文版)

中国化学会　中国科学院化学研究所

高分子科学(英文版)

CSTPCD

影响因子：0.721

ISSN：0256-7679

年,卷(期)：2024.42(10)