Photonic double-network hydrogel dressings for antibacterial phototherapy and inflammation regulation in the general management of cutaneous regeneration

Abstract

The treatment of pathogenic bacteria-induced skin fester followed increasing inflammation remains an ongoing challenge. The traditional antibacterial photothermal therapy always results in localized hyperthermia (over 50 °C), which inevitably delays...

Recent progress of antibacterial hydrogels in wound dressings

“… Crosslinked structure Components Antibacterial components or methods Mechanical property Reference Single network Polyacrylic acid grafted quaternized cellulose Quaternized cellulose Tensile stress: 0.68 ​± ​0.12 ​MPa, elasticity modulus: 0.19 ​± ​0.03 ​MPa [ 57 ] K-carrageenan – SN: Maximum fracture force: 17.6 ​N, compression force: approximately 18 ​N [ 58 ] Double networks Poly( l -lysine)-graft-4-hydroxyphenylacetic acid/agarose Alpha-poly- l -lysine antibacterial peptides Bursting pressure: 34.5 ​± ​2.4 ​kPa, modulus: 1.14 ​MPa [ 59 ] Bi 2 S 3 @GO nano- heterojunctions/k-carrageenan-agar Synergistic low-temperature photothermal/photodynamic effects Maximum fracture force: 30.3 ​N, compression force: approximately 25 ​N [ 58 ] Polyacrylamide, gelatin/ε-polylysine Positive charged ε-polylysine Stretchability: >1400% compression strength: approximately 230 ​kPa [ 60 ] Oxidized salep- ethylene diamine-modified salep/polyvinyl alcohol Arnebia extract, Ag nanoparticles Young's modulus: 14 ​kPa, Maximum fracture energy: 90 ​kJ ​m - 3 , compressive stress: 400 ​kPa, adhesive strength: 48 ​N ​m - 1 [ 61 ] Multi networks Chitosan/zwitterionic sulfopropylbetaine/hydroxyethyl acrylate Chitosan, zwitterionic sulfopropylbetaine Compressive stress: 81.9 ​MPa, tensile stress: 384 ​kPa [ 56 ] Carboxymethyl chitosan/oxidized dextran/γ-polyglutamic acid Chitosan The lap shear strength: 64.74 ​± ​4.05 ​kPa, burst pressure: 238.47 ​± ​38.36 ​mmHg, compressive stress: 56.54 ​± ​9.77 ​kPa [ 62 ] Chitosan/polyacrylamide/sodium alginate/Mg(OH) 2 nanoparticles Mg(OH) 2 particles and chitosan Compressive strength: 1.9 ​MPa, ...…”

Mini‐Review: Progress on the Controllable Synthesis of Micro/Nanoscale Bi2S3 Functional Materials

“…[10] As a vital semiconductor with a direct bandgap energy of 1.3-1.7 eV, orthorhombic Bi 2 S 3 illustrates major applications in electronic and optoelectronic devices, [11] electrochemical energy storage cells, [12,13] photocatalysts, [14,15] sensors, [16,17] and biomedicine and environment protection. [18][19][20] In these above advanced areas, the manipulation of micro/nanostructured Bi 2 S 3 is of great significance, on account of their high surface energy and reactivity, rich surface sites, and high surface/volume ratio than those of conventional powders. [21,22] For the nanocrystallization of Bi 2 S 3 material, it shows an apparent blue shift on the optical band edge as well as the nonlinear optical response.…”