Super‐Soft DNA/Dopamine‐Grafted‐Dextran Hydrogel as Dynamic Wire for Electric Circuits Switched by a Microbial Metabolism Process

Advanced Science

Dan Luo¹  Yuchen Cui²  Xinpeng Han²  Jinpeng Han²  Chenyu Liang²  Dayong Yang²  Wenguang Liu³ 

[1] Department of Biological & Environmental Engineering Cornell University Ithaca NY 14853 USA;Frontier Science Center for Synthetic Biology Key Laboratory of Systems Bioengineering (MOE) School of Chemical Engineering and Technology Tianjin University Tianjin 300350 P. R. China;Tianjin Key Laboratory of Composite and Functional Materials School of Materials Science and Engineering Tianjin University Tianjin 300350 P. R. China;

关键词: DNA hydrogels;    electric circuits;    microbial metabolism;    synthetic biology;    volume responsiveness;   

DOI  :  10.1002/advs.202000684

来源: DOAJ

【 摘 要 】

Abstract Engineering dynamic systems or materials to respond to biological process is one of the major tasks in synthetic biology and will enable wide promising applications, such as robotics and smart medicine. Herein, a super‐soft and dynamic DNA/dopamine‐grafted‐dextran hydrogel, which shows super‐fast volume‐responsiveness with high sensitivity upon solvents with different polarities and enables creation of electric circuits in response to microbial metabolism is reported. Synergic permanent and dynamic double networks are integrated in this hydrogel. A serials of dynamic hydrogel‐based electric circuits are fabricated: 1) triggered by using water as switch, 2) triggered by using water and petroleum ether as switch pair, 3) a self‐healing electric circuit; 4) remarkably, a microbial metabolism process which produces ethanol triggering electric circuit is achieved successfully. It is envisioned that the work provides a new strategy for the construction of dynamic materials, particularly DNA‐based biomaterials; and the electric circuits will be highly promising in applications, such as soft robotics and intelligent systems.

【 授权许可】

Unknown