From Nature‐Sourced Polysaccharide Particles to Advanced Functional Materials

Ma, Yingshan; Morozova, Sofia M.; Kumacheva, Eugenia

doi:10.1002/adma.202312707

Cited by 5 publications

(1 citation statement)

References 437 publications

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“…Polysaccharide-based hydrogels were selected, as they are composed of natural biopolymers, which lies in-line with the sustainable materials criterion. Moreover, they are degradable and biocompatible polymers that can be tailored to make advanced functional materials [28].…”

Section: Preparation Of Hm-coated Lig Electrodesmentioning

confidence: 99%

Elucidating Charge Transfer Processes and Enhancing Electrochemical Performance of Laser-Induced Graphene via Surface Engineering with Sustainable Hydrogel Membranes: An Electrochemist's Perspective

Khodadadiyazdi,

Manohar,

Olejnik

et al. 2024

Preprint

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Laser-induced graphene (LIG) has emerged as a promising solvent-free strategy for producing highly porous, 3D graphene structures, particularly for electrochemical applications. However, the unique character of LIG and hydrogel membrane (HM) coated LIG requires accounting for the specific conditions of its charge transfer process. This study investigates electron transfer kinetics and the electroactive surface area of LIG electrodes, finding efficient kinetics for the [Fe(CN)6]3-/4- redox process, with a high rate constant of 4.12 x 10-3 cm/s and an electroactive area 28 times higher than the geometric area. The impact of polysaccharide HM coatings (cationic chitosan, neutral agarose and anionic sodium alginate) on LIG's charge transfer behavior is elucidated, considering factors like Ohmic drop across porous LIG and Coulombic interactions/permeability affecting diffusion coefficients, estimated from amperometry. Experimental findings are supported by ab-initio calculations showing a electrostatic potential map’s negative charge distribution upon chitosan chain protonation, having an effect in over a two-fold redox current increase upon switching the pH from 7.48 to 1.73. This feature is absent for other studied HMs. It was also revealed that the chitosan's band gap was reduced to 3.07 eV upon acetylation, due to the introduction of a new LUMO state. This study summarizes the operating conditions enhanced by HM presence, impacting redox process kinetics and presenting unique challenges for prospective LIG/HM systems’ electrochemical applications.

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Section: Preparation Of Hm-coated Lig Electrodesmentioning

confidence: 99%

Elucidating Charge Transfer Processes and Enhancing Electrochemical Performance of Laser-Induced Graphene via Surface Engineering with Sustainable Hydrogel Membranes: An Electrochemist's Perspective

Khodadadiyazdi,

Manohar,

Olejnik

et al. 2024

Preprint

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Light‐Operated Transient Unilateral Adhesive Hydrogel for Comprehensive Prevention of Postoperative Adhesions

Cui,

Shen,

et al. 2024

Advanced Science

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Dislocation of anti‐adhesion materials, non‐specific tissue adhesion, and the induction of secondary fibrinolysis disorders are the main challenges faced by postoperative anti‐adhesion materials. Herein, a self‐leveling transient unilateral adhesive hydrogel is custom‐designed to conquer these challenges with a theoretically calculated and dual‐step tailored gellan gum (GG) as the sole agent. First, the maximum gelation temperature of GG is lowered from 42–25 °C through controlled perturbation of intra‐ and inter‐molecular hydrogen bonds, which is achieved by employing the methacrylic anhydride as a “hydrogen bond's perturbator” to form methacrylate GG (MeGG). Second, the “self‐leveling” injectability and wound shape adaptably are endowed by the formation of borate‐diol complexed MeGG (BMeGG). Finally, the transient unilateral tissue‐adhesive hydrogel (BMeGG‐H) barrier is prepared through photo‐controlled cross‐linking of reactive alkenyl groups. This degradable hydrogel demonstrates favorable rheological properties, light‐controlled unilateral adhesion properties, biocompatibility, anti‐fibrin adhesion, and anti‐cell adhesion properties in vitro. Comprehensive regulation of the fibrinolysis balance toward non‐adhesion is conformed in a rat model after intra‐abdominal surgery via anti‐autoinflammatory response, intestinal wall integrity repair, and Tissue plasminogen activator (t‐PA) and plasminogen activator inhibitor‐1 (PAI‐1) balance adjustment. Notably, the 14th day anti‐adhesion effective rate is 100%, indicating its significant potential in clinical applications for postoperative anti‐adhesion.

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Construction of an amphiphilic ionic gel based on quaternised carboxymethyl konjac glucomannan: preparation and its salt-ion-resistant properties in methylene blue adsorption

Hou,

Zhang,

Chen

et al. 2024

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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From Nature‐Sourced Polysaccharide Particles to Advanced Functional Materials

Cited by 5 publications

References 437 publications

Elucidating Charge Transfer Processes and Enhancing Electrochemical Performance of Laser-Induced Graphene via Surface Engineering with Sustainable Hydrogel Membranes: An Electrochemist's Perspective

Elucidating Charge Transfer Processes and Enhancing Electrochemical Performance of Laser-Induced Graphene via Surface Engineering with Sustainable Hydrogel Membranes: An Electrochemist's Perspective

Light‐Operated Transient Unilateral Adhesive Hydrogel for Comprehensive Prevention of Postoperative Adhesions

Construction of an amphiphilic ionic gel based on quaternised carboxymethyl konjac glucomannan: preparation and its salt-ion-resistant properties in methylene blue adsorption

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