Hwang Sangyeon, Choi Mingi, Lee Jongseo, Kang Giho, Kim Seo Ju, Seong Baekhoon, Lee Hyungdong, Lee Wonyoung, Byun Doyoung
School of Mechanical Engineering, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do, 16419, Republic of Korea.
Sci Rep. 2021 Mar 29;11(1):7109. doi: 10.1038/s41598-021-86572-w.
The hydrogel of biomolecule-assisted metal/organic complex has the superior ability to form a uniform, continuous, and densely integrated structure, which is necessary for fine thin film fabrication. As a representative of nature-originated polymers with abundant reactive side chains, we select the gelatin molecule as an element for weaving the metal cations. Here, we demonstrate the interaction between the metal cation and gelatin molecules, and associate it with coating quality. We investigate the rheological property of gelatin solutions interacting with metal cation from the view of cross-linking and denaturing of gelatin molecules. Also, we quantitatively compare the corresponding interactions by monitoring the absorbance spectrum of the cation. The coated porous structure is systematically investigated from the infiltration of gelatin-mediated GdCeO (GDC) precursor into SmSrCoO (SSC) porous scaffold. By applying the actively interacting gelatin-GDC system, we achieve a thin film of GDC on SSC with excellent uniformity. Compare to the discrete coating from the typical infiltration process, the optimized thin film coated structure shows enhanced performance and stability.
生物分子辅助金属/有机复合物水凝胶具有形成均匀、连续且紧密整合结构的卓越能力，这对于精细薄膜制造而言是必要的。作为具有丰富反应性侧链的天然聚合物的代表，我们选择明胶分子作为编织金属阳离子的元素。在此，我们展示了金属阳离子与明胶分子之间的相互作用，并将其与涂层质量相关联。我们从明胶分子的交联和变性角度研究了与金属阳离子相互作用的明胶溶液的流变特性。此外，我们通过监测阳离子的吸收光谱定量比较了相应的相互作用。从明胶介导的GdCeO（GDC）前驱体渗入SmSrCoO（SSC）多孔支架的情况出发，系统地研究了涂层多孔结构。通过应用具有积极相互作用的明胶 - GDC体系，我们在SSC上获得了具有优异均匀性的GDC薄膜。与典型渗透过程中的离散涂层相比，优化后的薄膜涂层结构表现出增强的性能和稳定性。
