Dhibar Subhendu, Mohan Aiswarya, Laha Rajlakshmi, Some Sangita, Kaith Priya, Trivedi Aditi, Bhattacharjee Subham, Nthunya Lebea N, Ajiboye Timothy O, Bera Ashok, Panja Sumit Kumar, Das Asit Kumar, Dam Somasri, Predeep Padmanabhan, Saha Bidyut
Colloid Chemistry Laboratory, Department of Chemistry, The University of Burdwan Golapbag Burdwan-713104 West Bengal India
Laboratory for Molecular Photonics and Electronics (LAMP), Department of Physics, National Institute of Technology Calicut Calicut-673603 Kerala India.
RSC Adv. 2025 Sep 15;15(40):33494-33505. doi: 10.1039/d5ra04603c. eCollection 2025 Sep 11.
A multifunctional Ni(ii)-based metallohydrogel (NiC-GT) was developed by reacting nickel(ii) chloride with guanylthiourea in water under ambient conditions. The resulting hydrogel exhibited excellent mechanical stability, as validated by comprehensive rheological and thixotropic analyses. Field emission scanning electron microscopy (FESEM) revealed a well-organized hierarchical microstructure, while energy-dispersive X-ray (EDX) mapping confirmed the uniform distribution of key elements such as C, N, O, S, Cl, and Ni within the gel matrix. Fourier-transform infrared (FT-IR) spectroscopy provided insights into the non-covalent interactions driving gelation, and powder X-ray diffraction (PXRD) analysis demonstrated the semi-crystalline characteristics of the material. Optical absorption studies indicated the semiconducting behaviour of the hydrogel, with enhanced electron mobility surpassing that of comparable soft materials. Notably, the hydrogel displayed broad-spectrum antibacterial efficacy against both Gram-positive (, ) and Gram-negative (, ) bacterial strains, suggesting its effectiveness in biomedical contexts. The integration of mechanical robustness, semiconducting functionality, and antimicrobial activity positions this Ni(ii)-metallohydrogel as a promising candidate for emerging applications in flexible electronic devices, biosensors, and therapeutic systems. This work highlights the synergistic potential of transition metal-coordinated supramolecular systems for advancing smart soft material platforms.
在环境条件下，通过氯化镍与胍基硫脲在水中反应，制备了一种多功能镍（II）基金属水凝胶（NiC-GT）。综合流变学和触变分析验证了所得水凝胶具有优异的机械稳定性。场发射扫描电子显微镜（FESEM）显示出有序的分级微观结构，而能量色散X射线（EDX）映射证实了凝胶基质中C、N、O、S、Cl和Ni等关键元素的均匀分布。傅里叶变换红外（FT-IR）光谱揭示了驱动凝胶化的非共价相互作用，粉末X射线衍射（PXRD）分析表明该材料具有半结晶特性。光吸收研究表明水凝胶具有半导体行为，其电子迁移率增强，超过了类似软材料。值得注意的是，该水凝胶对革兰氏阳性菌（ ， ）和革兰氏阴性菌（ ， ）菌株均表现出广谱抗菌功效，表明其在生物医学环境中的有效性。机械稳健性、半导体功能和抗菌活性的结合，使这种镍（II）基金属水凝胶成为柔性电子器件、生物传感器和治疗系统等新兴应用的有前途的候选材料。这项工作突出了过渡金属配位超分子系统在推进智能软材料平台方面的协同潜力。
