Research Progress Review of Preparation and Applications of Fluorescent Hydrogels

Abstract

The fluorescent gel with good flexibility and biocompatibility has attracted more and more attention due to its excellent optical properties. In this paper, the research progresses in preparation methods and applications of fluorescent gels are reviewed. In addition, the preparation methods of self-assembly and polymerization of fluorescent gel are also introduced. In this paper, it should be noted that some outstanding research about the fluorescent gels used in sensors, bio-imaging probes, drug delivery, and other application fields is summarized. This work provides useful reference information for further exploration and study of fluorescent hydrogels.

An efficient strategy to design and construct high‐strength and fluorescence poly(vinyl alcohol) hydrogels via freeze–Thaw cycles

“…Fluorescent hydrogels combine fluorescent materials into the three-dimensional network skeleton of hydrogels and incorporate them through covalent or noncovalent interactions so that they exhibit the dual characteristics of gel and fluorescence at the same time. 1,2 According to the different fluorescence groups, they can be divided into organic fluorophores, 3,4 quantum dots, 5-8 lanthanide ions, 9-11 and others. These fluorescence groups are Zhou Li and Weihang Wu contributed equally to this study.…”

Schiff base fluorescent hydrogel containing acylhydrazone structure and pyridine ring with multifunction

“…1 They hold great potential in many applications including sensing, bioimaging, information encoding, and soft robotics. [2][3][4][5][6] Researchers are focusing on preparing FHs with stimuli responsiveness and self-healing ability to extent their application into broader fields. Functional FHs such as stimuli responsiveness, self-healing ability and shape-memory are commonly derived from special cross-linking between polymer chains.…”

“…Smart fluorescent hydrogels (FHs) are three‐dimensionally crosslinked hydrophilic polymer networks with tunable luminous features 1 . They hold great potential in many applications including sensing, bioimaging, information encoding, and soft robotics 2–6 . Researchers are focusing on preparing FHs with stimuli responsiveness and self‐healing ability to extent their application into broader fields.…”

Gentamicin-loaded chitosan/folic acid-based carbon quantum dots nanocomposite hydrogel films as potential antimicrobial wound dressing

“…In recent decades, there has been significant attention in using biocompatible nanomaterials as crosslinking agents for the construction of polymeric hydrogel [18][19][20][21]. Remarkably, fluorescent hydrogels received great attention in biomedical applications, which has been offered by the integration of individual chemical and physical characteristics of photoluminescence (PL) nanomaterials, for instance, semiconductor quantum dots, up-conversion nanoparticles, carbon quantum dots (CQDs), and luminescent metal complexes [22][23][24][25]. Because of great photo-physical and chemical features, CQDs have been regarded as a class of PL nanomaterial, absorbing remarkable and attracting interest in both technology and scientific fields [26,27].…”