文献类型：期刊文献

英文题名：Dynamic Growth of Macroscopically Structured Supramolecular Hydrogels through Orchestrated Reaction-Diffusion

作者：Wang, Hucheng[1];Fu, Xiaoming[1,2];Gu, Guanyao;Bai, Shengyu[1];Li, Runlai[5];Zhong, Weimin[2];Guo, Xuhong[1];Eelkema, Rienk[4];van Esch, Jan H.[4];Cao, Zhixing[2];Wang, Yiming[1,3]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Meilong Rd 130, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Key Lab Smart Mfg Energy Chem Proc, Meilong Rd 130, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Shanghai Key Lab Intelligent Sensing & Detect Tech, Meilong Rd 130, Shanghai 200237, Peoples R China;[4]Delft Univ Technol, Dept Chem Engn, Maasweg 9, NL-2629 HZ Delft, Netherlands;[5]Natl Univ Singapore, Dept Chem, Singapore 119077, Singapore

年份：2023

卷号：62

期号：43

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20233814736474);WOS:【SCI-EXPANDED(收录号:WOS:001065649400001)】；

基金：Y.W. acknowledge the financial support of the "Chenguang Program" supported by the Shanghai Education Development Foundation and Shanghai Municipal Education Commission (20CG36), Shanghai Special Program for Fundamental Research (22TQ1400100-9), National Key Research and Development Program of China (2022YFD70050101), and the Open Project of State Key Laboratory of Chemical Engineering (SKL-ChE-23C01); W.Z. acknowledges the support from NSFC (61925305); Z.C. acknowledges the support from NSFC (62073137), Shanghai Action Plan for Technological Innovation Grant (22ZR1415300, 22511104000) and Shanghai Center of Biomedicine Development; X.F. acknowledges the support from the fellowship of China Post-doctoral Science Foundation (2021M071202) and the support from Shanghai Sailing Program (22YF1410700).

语种：英文

外文关键词：Hydrogels; Non-Equilibrium Systems; Reaction-Diffusion; Self-Assembly; Supramolecular Materials

摘要：Living organisms are capable of dynamically changing their structures for adaptive functions through sophisticated reaction-diffusion processes. Here we show how active supramolecular hydrogels with programmable lifetimes and macroscopic structures can be created by relying on a simple reaction-diffusion strategy. Two hydrogel precursors (poly(acrylic acid) PAA/CaCl2 and Na2CO3) diffuse from different locations and generate amorphous calcium carbonate (ACC) nanoparticles at the diffusional fronts, leading to the formation of hydrogel structures driven by electrostatic interactions between PAA and ACC nanoparticles. Interestingly, the formed hydrogels are capable of autonomously disintegrating over time because of a delayed influx of electrostatic-interaction inhibitors (NaCl). The hydrogel growth process is well explained by a reaction-diffusion model which offers a theoretical means to program the dynamic growth of structured hydrogels. Furthermore, we demonstrate a conceptual access to dynamic information storage in soft materials using the developed reaction-diffusion strategy. This work may serve as a starting point for the development of life-like materials with adaptive structures and functionalities. Dynamic growth of structured supramolecular hydrogels has been achieved by a simple reaction-diffusion strategy, reminiscent of the dynamic structural evolution of living organisms. The dynamic growth of the hydrogel has been well explained by a reaction-diffusion model, which provides a robust approach to program the growth of diverse dynamic hydrogel structures.+image