标题: Horseradish Peroxidase-Triggered Polydopamine-Modified Chitosan Hydrogels for Electrically Programmed and Infrared-Decodable Dynamic Information Storage

作者: Li, YT (Li, Yuting); Liu, MY (Liu, Mengyi); Hu, F (Hu, Feng); He, FJ (He, Fangjiu); Li, XY (Li, Xiaoyang); Deng, HB (Deng, Hongbing); Du, YM (Du, Yumin); Shi, XW (Shi, Xiaowen)

来源出版物: LANGMUIR  卷: 41  期: 22  页: 14147-14157  DOI: 10.1021/acs.langmuir.5c01084  Early Access Date: MAY 2025  Published Date: 2025 MAY 23  

摘要: The exceptional multiple responsiveness of hydrogels has garnered significant attention for their potential in storing dynamic information. Self-erasing information observable by the naked eye provides an alternative method for data security. Herein, we report a polydopamine (PDA)-modified chitosan (CS) hydrogel that automatically reveals information without external stimuli. Information is embedded in a CS hydrogel containing horseradish peroxidase through an electrical writing process, creating localized high pH regions that trigger rapid enzymatic polymerization of dopamine (DA) into dark PDA. However, unwritten regions experience slower self-oxidation kinetics in air. This mismatched DA oxidation leads to information revelation and time-dependent erasure. The information lifetime can be precisely regulated by the number of electrical writing cycles and the magnitude of the electric current, enabling complex information decryption and allowing for the recognition of valid and invalid signals. These results offer valuable insights into fabricating and applying patterned hydrogels for information storage.

入藏号: WOS:001494661700001

PubMed ID: 40408542

语言: English

文献类型: Article

KeyWords Plus: DOPAMINE; NANOPARTICLES

地址: [Li, Yuting; Liu, Mengyi; Hu, Feng; He, Fangjiu; Li, Xiaoyang; 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：3.9