Hybrid conducting alginate-based hydrogel for hydrogen peroxide detection from enzymatic oxidation of lactate

Babeli, Ismael; Puiggalı́-Jou, Anna; Roa, J.J.; Ginebra, Maria‐Pau; García-Torres, José; Alemán, Carlos

doi:10.1016/j.ijbiomac.2021.10.169

Cited by 12 publications

(3 citation statements)

References 71 publications

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“…To overcome hydrogel's inertness, hydrogels can be successfully modified with nanomaterials (e.g., metallic nanoparticles and carbon nanomaterials) to develop smart nanocomposite hydrogels with improved functionality [13][14][15]. Thus, nanomaterials can improve the mechanical properties of the nanocomposite hydrogels (e.g., stiffness, toughness, and ductility) but also confer physical properties (e.g., electrical conductivity, magnetism, thermal properties, etc.)…”

Section: Introductionmentioning

confidence: 99%

Hybrid Hydrogels with Stimuli-Responsive Properties to Electric and Magnetic Fields

García-Torres¹

2023

Hydrogels - From Tradition to Innovative Platforms With Multiple Applications

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Hydrogels are a promising type of soft material featuring great similarity to biological tissues due to their inherent characteristics, such as high-water content, flexibility, softness, or low elastic modulus. Imparting multifunctionality to hydrogels to be triggered by external stimuli is considered to have a high potential for innovative application in the biomedical field by regulatory agencies, such as FDA and EMA. Thus, functional hybrid systems based on the combination of nanomaterials and hydrogels are a new class of materials offering new opportunities for living organisms-machine interfacing for application in a wide variety of fields ranging from biomedical engineering to soft robotics, soft electronics, environmental or energy science. The objective of this chapter is to review the latest advances in multifunctional hybrid hydrogels with responsiveness to electric and magnetic fields and with applications in the biomedical field.

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Section: Introductionmentioning

confidence: 99%

Hybrid Hydrogels with Stimuli-Responsive Properties to Electric and Magnetic Fields

García-Torres¹

2023

Hydrogels - From Tradition to Innovative Platforms With Multiple Applications

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“…18,22 Interpenetrated hydrogels obtained by combining PEDOT and Alg, hereafter named PEDOT/Alg, simultaneously exhibit the properties of the two systems, for example, conductivity, piezoelectricity, biocompatibility, self-healing properties, and both chemical and thermoelectric responsiveness. 18 Because of this, PEDOT/Alg CHs have been proposed for soft (bio)electronics as self-healable pressure sensors, 23 drug-delivery systems, 24,25 biosensors (when loaded with gold NPs for signal amplification), 26 and remotely transportable electronic devices (when loaded with magnetite NPs), 27 among others. 18 This work goes one step further by designing a new multifunctional PEDOT/Alg hydrogel that incorporates carbon nanoparticles (CNPs) and a metal oxide, manganese oxide (MnO 2 ), for its simultaneous use as a flexible supercapacitor and a temperature sensor.…”

Section: ■ Introductionmentioning

confidence: 99%

“…PEDOT is a commercially available organic conducting polymer (CP) with outstanding conductive and electrochemical responses (i.e., high conductivity and fast redox response), high processability, mechanical robustness, improved electrical conductivity, and good biocompatibility. − On the other hand, Alg is a natural, biodegradable, biocompatible, biostable, and hydrophilic polysaccharide extracted from brown algae. , Interpenetrated hydrogels obtained by combining PEDOT and Alg, hereafter named PEDOT/Alg, simultaneously exhibit the properties of the two systems, for example, conductivity, piezoelectricity, biocompatibility, self-healing properties, and both chemical and thermoelectric responsiveness . Because of this, PEDOT/Alg CHs have been proposed for soft (bio)electronics as self-healable pressure sensors, drug-delivery systems, , biosensors (when loaded with gold NPs for signal amplification), and remotely transportable electronic devices (when loaded with magnetite NPs), among others …”

Section: Introductionmentioning

confidence: 99%

Nanocomposite Hydrogels with Temperature Response for Capacitive Energy Storage

García-Torres

Colombi

Mahamed

et al. 2023

ACS Appl. Energy Mater.

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Functional hydrogels are three-dimensional polymeric networks with potential applicability in the field of wearable electronics. However, hydrogels are often used to develop devices with only one functionality. In this work, a multifunctional hydrogel consisting of poly(3,4-ethylenedioxythiophene) (PEDOT), alginate (Alg), carbon nanoparticles (CNPs), and manganese oxide has been manufactured for devices that can simultaneously store energy (supercapacitor) and sense temperature. The Alg and PEDOT interpenetration allows for obtaining a flexible and electrically conductive hydrogel with an open and interconnected porous structure. The incorporation of CNPs improves electrical conductivity and confers synergies with manganese oxide, which provide energy storage capability. Furthermore, the resistance of the hydrogel varies linearly with the temperature, this behavior being observed consistently and without hysteresis throughout consecutive heating and cooling cycles. Thus, the PEDOT/Alg/CNP/MnO 2 hydrogel shows good capacitance (42 mF cm −2 ), capacitance retention (87%), and good temperature sensitivity (−1.05% °C−1 ).

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