标题: Dopamine-Modified Chitosan Patterning Hydrogel with Dynamic Information Storage Ability

作者: Li, YT (Li, Yuting); Yang, C (Yang, Chen); Hu, F (Hu, Feng); Hu, H (Hu, Hui); Xu, YC (Xu, Yuncheng); Deng, HB (Deng, Hongbing); Du, YM (Du, Yumin); Shi, XW (Shi, Xiaowen)

来源出版物: ACS APPLIED MATERIALS & INTERFACES  卷: 16  期: 17  页: 21463-21471  DOI: 10.1021/acsami.3c18976  Published Date: 2024 APR 23  

摘要: The storage of dynamic information in hydrogels has aroused considerable interest regarding the multiple responsiveness of soft matter. Herein, we propose an electrical writing methodology to prepare dopamine (DA)-modified chitosan hydrogels with a dynamic information storage ability. A pH-responsive chitosan hydrogel medium was patterned by cathodic writing to in situ generate OH- in the writing area, at which dopamine underwent an auto-oxidation reaction in the locally alkaline environment to generate a dark color. The patterned information on the hydrogel can be encoded simply by electrical signals. The speed of information retrieval is positively correlated with the charge transfer during the electrical writing process, and the hiding of information is negatively correlated with the environmental stimulus (i.e., dopamine concentration, pH value, etc.). To showcase the versatility of this medium for information storage and the precision of the pattern, a quick response (QR) code is electronically written on dopamine-modified chitosan hydrogel and can be recognized programmably by a standard mobile phone. The results show that electrical regulation is a novel means to program the information storage process of hydrogels, which inspires future research on structural and functional information storage using stimulus-responsive hydrogels.

作者关键词: chitosan; stimulus-responsive hydrogel; electricalregulation; dynamic information; dopamine autoxidation; information storage

地址: [Li, Yuting; Yang, Chen; Hu, Feng; Hu, Hui; Xu, Yuncheng; Deng, Hongbing; Du, Yumin; Shi, Xiaowen] Wuhan Univ, Hubei Engn Ctr Nat Polymers Based Med Mat, Sch Resource & Environm Sci, Hubei Biomass Resource Chem & Environm Biotechnol, Wuhan 430079, Peoples R China.

通讯作者地址: Shi, XW (通讯作者)，Wuhan Univ, Hubei Engn Ctr Nat Polymers Based Med Mat, Sch Resource & Environm Sci, Hubei Biomass Resource Chem & Environm Biotechnol, Wuhan 430079, Peoples R China.

电子邮件地址: shixw@whu.edu.cn

影响因子：8.3