A hydrogel gripper enabling fine movement based on spatiotemporal mineralization

Zuo, Liangrui; Wu, Mingzhen; Zhang, Hongbo; Zhang, Shikai; Ma, Zhengxin; Luo, Jun; Ding, Chunmei; Li, Jianshu

doi:10.1039/d3tb01252b

Cited by 1 publication

(1 citation statement)

References 48 publications

(51 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Their method involves the surface contact of an agar gel containing Fe 3+ ions with a hydrogel substrate containing sodium hydroxide. After an autonomous mineralization process to form ferric hydroxide, the hydrogel was immersed in an acidic pyrrole (Py) monomer solution, and the Fe 3+ ions were released initially to the polymerization of pyrrole . However, the development of the PPy pattern still requires direct contact with the reactive substances, and the precision and complexity of the formed polypyrrole (PPy) pattern are determined by the geometry of the agar gel, which can hardly meet the strict requirements under certain application circumstances.…”

Section: Introductionmentioning

confidence: 99%

Thermal and Near-Infrared Light-Responsive Hydrogel Actuators with Spatiotemporally Developed Polypyrrole Patterns

Zhao,

Jiang,

Liu

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Conjugated polymers are commonly adopted to develop electro-and photoresponsive materials due to their superior electronic conductivity and phototothermal convertibility. However, they are usually homogeneously polymerized within the network, which makes their functionalities challenging to spatiotemporally modulate. In this work, we report a convenient and extensible method to develop polypyrrole patterns in a thermally responsive sodium alginate/poly(N-isopropylacrylamide) hydrogel. The polypyrrole pattern is developed by spatial photoreduction of Fe 3+ ions into Fe 2+ ions and subsequently initiating oxidation polymerization of pyrrole by the residual Fe 3+ ions. During this process, carboxylate groups coordinated with Fe 3+ ions are also sacrificed in a gradient manner along the thickness direction, and the resulting concentration gradients of the carboxylate group endow the hydrogel with thermal-responsive actuation. The polymerized polypyrrole also renders the hydrogels' prominent temperature-rising behaviors upon NIR light irradiation. By designing the PPy pattern, hydrogels can exhibit versatile actuating behaviors and execute mechanical works such as lifting objects. This method is convenient and can be extended to develop other conjugated polymers in hydrogel systems for versatile applications.

show abstract

Section: Introductionmentioning

confidence: 99%

Thermal and Near-Infrared Light-Responsive Hydrogel Actuators with Spatiotemporally Developed Polypyrrole Patterns

Zhao,

Jiang,

Liu

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

A hydrogel gripper enabling fine movement based on spatiotemporal mineralization

Abstract: The fine tailoring of subtle movement of hydrogel actuator through simple methods has widespread application prospects in wearable electronics, bionic robot and biomedical engineering. However, to the best of our...

Cited by 1 publication

References 48 publications

Thermal and Near-Infrared Light-Responsive Hydrogel Actuators with Spatiotemporally Developed Polypyrrole Patterns

Thermal and Near-Infrared Light-Responsive Hydrogel Actuators with Spatiotemporally Developed Polypyrrole Patterns

Contact Info

Product

Resources

About