Journal
MATERIALS CHEMISTRY FRONTIERS
Volume 5, Issue 5, Pages 2092-2123Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0qm00868k
Keywords
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Funding
- National Natural Science Foundation of China [51973172, 51673155]
- Natural Science Foundation of Shaanxi Province [2020JC-03, 2019TD-020]
- State Key Laboratory for Mechanical Behavior of Materials
- World-Class Universities (Disciplines)
- Characteristic Development Guidance Funds for the Central Universities
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University [2019LHM-KFKT008]
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Stimuli-responsive conductive hydrogels, combining the advantages of conductive polymers, carbon nanomaterials, metals, and conductive ionic compounds, have emerged as a new concept in the field of hydrogel research. These hydrogels can respond to various stimuli such as temperature, pH, light, magnetic fields, and electrical fields, and have a wide range of applications in sensors, electronic devices, drug release, wound healing, photothermal therapy, tissue engineering, and cell delivery. Various issues still need to be addressed, and future directions for the development of new types of stimuli-responsive conductive hydrogels are proposed in this review.
Stimuli-responsive conductive hydrogels have emerged as a new rising concept in the hydrogel research field due to their combined advantages of stimuli-responsivity and conductivity from conductive polymers (such as polyaniline, polypyrrole, and polythiophene), carbon nanomaterials (such as carbon nanotubes, graphene and graphene oxide), metals (such as Au and Ag), and conductive ionic compounds (such as Fe3+ and Al3+). To summarize the recent progress relating to stimuli-responsive conductive hydrogels, this review article discusses research into the preparation, performance, and applications of stimuli-responsive conductive hydrogels published in recent decades. The types of stimuli to which these hydrogels can respond, including temperature, pH, near-infrared (NIR) light, magnetic fields, electrical fields, and multiple stimuli, are classified and discussed. Applications of stimuli-responsive conductive hydrogels in sensors for human motion/health monitoring, electronic skin, on-off switchable electronic devices, actuators, controlled drug release, wound healing, photothermal therapy, tissue engineering, and cell delivery are demonstrated. Moreover, issues still needing to be solved and future directions for the development of new types of stimuli-responsive conductive hydrogels are also proposed in this review.
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