Recent Progress in Self-Healable Hydrogel-Based Electroluminescent Devices: A Comprehensive Review

Abstract

Flexible electronics have gained significant research attention in recent years due to their potential applications as smart and functional materials. Typically, electroluminescence devices produced by hydrogel-based materials are among the most notable flexible electronics. With their excellent flexibility and their remarkable electrical, adaptable mechanical and self-healing properties, functional hydrogels offer a wealth of insights and opportunities for the fabrication of electroluminescent devices that can be easily integrated into wearable electronics for various applications. Various strategies have been developed and adapted to obtain functional hydrogels, and at the same time, high-performance electroluminescent devices have been fabricated based on these functional hydrogels. This review provides a comprehensive overview of various functional hydrogels that have been used for the development of electroluminescent devices. It also highlights some challenges and future research prospects for hydrogel-based electroluminescent devices.

Recent Insights about the Role of Gels in Organic Photonics and Electronics

“…In this sense, Melikov, R. et al have already described great efficiency over 0.95 in warm white LEDs employing fibroin lenses [56]. Silk-fibroin-based hydrogels offer flexibility and they are lightweight in comparison with the rigidity of the current materials, hence they have been objects of study for researchers in the last decade [57].…”

Antimicrobial Activity of Artemisia dracunculus Oil-Loaded Agarose/Poly(Vinyl Alcohol) Hydrogel for Bio-Applications

“…The composition of agar optimized the properties of PVA, resulting in two hydrogel matrices (PVA/A-80/20 and PVA/A-60/40) with excellent physicochemical and mechanical properties. The advantages of combining these two biocompatible polymers have also been used in other experimental models, demonstrating the versatility of these types of hydrogels [44,[58][59][60][61][62].…”

Magnesium-Doped Nano-Hydroxyapatite/Polyvinyl Alcohol/Chitosan Composite Hydrogel: Preparation and Characterization

“…7 Polyvinyl alcohol (PVA) monomer possesses hydroxyl groups that govern its physical and chemical properties while providing it with mechanical stability. 8,9 PVA can be combined with various polymers, metal ions, and biomolecules through diverse processing strategies to fabricate PVA-based composites exhibiting excellent mechanical properties, biocompatibility, and non-toxicity. [10][11][12] PVA-based hydrogel can be prepared through chemical, physical, and radiation-induced cross-linking of PVA polymer chains.…”