Henan Key Laboratory of Rare Earth Functional Materials, International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University, Zhoukou 466001, China.
Henan Key Laboratory of Rare Earth Functional Materials, International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University, Zhoukou 466001, China.
Int J Biol Macromol. 2024 Apr;264(Pt 2):130768. doi: 10.1016/j.ijbiomac.2024.130768. Epub 2024 Mar 11.
Lanthanide luminescent hydrogels have broad application prospects in various fields. However, most of lanthanide hydrogels possess relatively simple functions, which is not conducive to practical applications. Therefore, it is becoming increasingly urgent to develop multifunctional hydrogels. Herein, a multifunctional chitosan-based lanthanide luminescent hydrogel with ultra-stretchability, multi-adhesion, excellent self-healing, emission color tunability, and good antibacterial ability was prepared by a simple one-step free radical polymerization. In this work, our designed lanthanide complexes [Ln(4-VDPA)] contain three reaction sites, which can be copolymerized with N-[tris(hydroxymethyl) methyl] acrylamide (THMA), acrylamide (AM), and diacryloyl poly(ethylene glycol) (DPEG) to form the first chemical crosslinking network, while hydroxypropyltrimethyl ammonium chloride chitosan (HACC) interacts with the hydroxyl and amino groups derived from the chemical crosslinking network through hydrogen bonds to form the second physical crosslinking network. The structure of the double network as well as the dynamic hydrogen bond and lanthanide coordination endow the hydrogel with excellent stretchability, adhesion and self-healing properties. Moreover, the introduction of lanthanide complexes and chitosan makes the hydrogel exhibit outstanding luminescence and antibacterial performances. This research not only realizes the simple synthesis of multifunctional luminescent hydrogels, but also provides a new idea for the fabrication of biomass-based hydrogels as intelligent and sustainable materials.
镧系元素发光水凝胶在各个领域具有广阔的应用前景。然而，大多数镧系元素水凝胶的功能相对简单，不利于实际应用。因此，开发多功能水凝胶变得越来越紧迫。在此，通过简单的一步自由基聚合，制备了具有超拉伸性、多附着性、优异的自修复性、发射颜色可调谐性和良好抗菌能力的多功能壳聚糖基镧系元素发光水凝胶。在这项工作中，我们设计的镧系配合物[Ln(4-VDPA)]含有三个反应位点，可与 N-[三（羟甲基）甲基]丙烯酰胺（THMA）、丙烯酰胺（AM）和二丙烯酰聚乙二醇（DPEG）共聚，形成第一个化学交联网络，而羟丙基三甲基氯化铵壳聚糖（HACC）通过氢键与化学交联网络衍生的羟基和氨基相互作用，形成第二个物理交联网络。双网络的结构以及动态氢键和镧系元素配位赋予水凝胶优异的拉伸性、附着性和自修复性。此外，镧系元素配合物和壳聚糖的引入使水凝胶表现出出色的发光和抗菌性能。这项研究不仅实现了多功能发光水凝胶的简单合成，还为生物基水凝胶作为智能和可持续材料的制备提供了新的思路。
