Fabrication and characterization of microwave-assisted synthesis of carbon dots crosslinked sodium alginate hydrogel films

Sun, Pengyuan; Li, Xin; Kong, Baohua; Zhu, Ying-ao; Wang, Meihui; Wang, Hui; Liu, Qian

doi:10.1016/j.ijbiomac.2023.127130

Cited by 6 publications

(1 citation statement)

References 59 publications

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“…We systematically reviewed the research literature on hydrogel that does not contain synthetic polymers and conducted a detailed comparison with the PACOE organohydrogel. As shown in Table S5, the mechanical properties of PACOE prepared in this work are better than those of most hydrogels without synthetic polymers, especially the toughness of the PACOE organohydrogel reaching 1.53 MJ/m 3 , surpassing currently almost all hydrogel flexible sensors without synthetic polymers.…”

Section: Resultssupporting

confidence: 91%

CQDs-Cross-Linked Conductive Collagen/PAA-Based Nanocomposite Organohydrogel Coupling Flexibility with Multifunctionality for Dual-Modal Sensing of Human Motions

Lan,

Zhang,

Zhou

et al. 2024

ACS Appl. Mater. Interfaces

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Conductive hydrogels are ideal materials for intelligent medical devices, human-machine interfaces, and flexible bioelectrodes due to their adjustable mechanical properties and electrical responsiveness, whereas it is still a great challenge to achieve the integration of excellent flexibility and biocompatibility into one hydrogel sensor while also incorporating self-healing, selfadhesion, environmental tolerance, and antimicrobial properties. Here, a nanocomposite conductive organohydrogel was constructed by using collagen (Col), alginate-derived carbon quantum dots (OSA-CQDs), poly(acrylic acid) (PAA), ethylene glycol reduced AgNPs, and Fe 3+ ions. Depending on OSA-CQDs with multiple chemical binding sites and high specific surface area as cross-linkers, while coupling highly biologically active Col chains and PAA chains are serving as an energy dissipation module, the resulting organohydrogel exhibited excellent flexibility (795% of strain, 193 kPa of strength), high cell compatibility (>95% survival rate), self-healing efficiency (HE = 79.5%), antifreezing (−20 °C), moisturizing (>120 h), repeatable adhesion (strength >20 kPa, times >10), inhibitory activity against Escherichia coli and Staphylococcus aureus (9 and 21.5 cm 2 ), conductivity, and strain sensitivity (σ = 1.34 S/m, gauge factor (GF) = 11.63). Based on the all-in-one integration of multifunction, the organohydrogel can collaboratively adapt to the multimode of strain sensing and electrophysiological sensing to realize wireless real-time monitoring of human activities and physiological health. Therefore, this work provides a new and common platform for the design and sensing of next-generation hydrogel-based smart wearable sensors.

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Section: Resultssupporting

confidence: 91%

CQDs-Cross-Linked Conductive Collagen/PAA-Based Nanocomposite Organohydrogel Coupling Flexibility with Multifunctionality for Dual-Modal Sensing of Human Motions

Lan,

Zhang,

Zhou

et al. 2024

ACS Appl. Mater. Interfaces

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Persistent Room‐Temperature Phosphorescent Organohydrogels Based on Nonaromatic Luminogens Crosslinked by Hydrogen Bonds

Deng,

Liu,

Liu

et al. 2024

Adv Funct Materials

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The development of persistent room‐temperature phosphorescent (pRTP) hydrogels is important for the practical applications of organic phosphors. Unfortunately, the phosphorescence emission of nontraditional luminogens (NTLs) can be strongly quenched by water in hydrogel networks. Herein, a series of pRTP organohydrogels based on NTLs are prepared by dissolving poly(vinyl alcohol) (PVA), biuret (BIU) and poly(maleic acid) (PMAc) (or other nonaromatic macromolecular acids) in a glycerol/water mixed solvent, followed by a simple freezing‐thawing treatment. Very impressively, the organohydrogel exhibits remarkable excitation‐dependent and metal cation‐responsive phosphorescence with a maximum lifetime up to 782.8 ms at ambient conditions. Moreover, the organohydrogels treated with metal cations also have excitation‐dependent phosphorescence. Multidimensional information encryption can be achieved by simply printing solutions of metal cations onto the gel surface and switching the irradiation lights, or using gel blocks prepared with different macromolecular acids. Structural characterizations, mechanical tests, and comparative studies prove that hydrogen bonding between BIU and macromolecular chains leads to rigidification of molecular conformations and the cooperative effect of the components leads to the pRTP of the organohydrogels. This work provides a reliable strategy for the preparation of nonaromatic phosphorescent hydrogels with long afterglows and greatly expands the practical applications of phosphorescent materials.

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Insight into the synthetic strategies of carbon dots and its Structure-Property interplay for Next-Generation technologies

Liu,

Xu,

Wang

et al. 2024

Chemical Engineering Journal

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Fabrication and characterization of microwave-assisted synthesis of carbon dots crosslinked sodium alginate hydrogel films

Cited by 6 publications

References 59 publications

CQDs-Cross-Linked Conductive Collagen/PAA-Based Nanocomposite Organohydrogel Coupling Flexibility with Multifunctionality for Dual-Modal Sensing of Human Motions

CQDs-Cross-Linked Conductive Collagen/PAA-Based Nanocomposite Organohydrogel Coupling Flexibility with Multifunctionality for Dual-Modal Sensing of Human Motions

Persistent Room‐Temperature Phosphorescent Organohydrogels Based on Nonaromatic Luminogens Crosslinked by Hydrogen Bonds

Insight into the synthetic strategies of carbon dots and its Structure-Property interplay for Next-Generation technologies

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