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近年来,由于在光学、电学和生化等领域具有广泛的潜在应用,有序多孔反蛋白石结构薄膜的研究引起了人们的广泛关注.但是其在制备过程中常常会形成一些无法控制的缺陷,限制了这类材料的普及和实际应用.通过使用两种基质前驱体(正硅酸乙酯或丝素蛋白)与胶体小球混合共组装,探究了二元体系共组装法制备无裂痕反蛋白石结构薄膜的可行性.并用扫描电镜和可见光谱对薄膜结构进行了表征.结果表明,对于正硅酸乙酯体系,在不影响胶体小球有序排列的条件下,正硅酸乙酯在小球间的空隙中发生溶胶凝胶转变,与微球共同组装成有序致密的整体,去除微球模板后,可以得到大规模(>200μm)无缺陷有序的反蛋白石结构薄膜.而对于大分子丝素蛋白体系,由于它和胶体小球有较强的相互作用力,会抑制胶体小球的有序组装,导致无法形成有序结构薄膜.对两种二元共组装体系进行了实验探索,实验结果不仅有助于人们了解共组装方式的适用范围,而且为设计和制备无缺陷反蛋白石薄膜提供了新的途径.
In recent years, the study of ordered porous anti-opal films has drawn much attention due to its potential applications in optics, electronics and biochemistry, etc. However, it often leads to some uncontrollable defects in the preparation process, The popularization and practical application of this kind of material.By the co-assembly of two matrix precursors (tetraethyl orthosilicate or silk fibroin) and colloidal beads, we explored the binary system co-assembly method to prepare the crack-free anti-opal structure The feasibility of the film and the scanning electron microscopy and visible spectrum of the film structure were characterized.The results show that, for the TEOS system, without affecting the order of colloidal beads under the conditions of TEOS in the pellets The sol-gel transition occurs in the interstices between the microspheres and the microspheres to form an orderly dense whole body, and a large-scale (> 200 μm) defect-free reverse-opal structure thin film can be obtained after removing the microsphere template. Silk fibroin system, due to its strong interaction with colloidal globules, will inhibit the orderly assembly of colloidal globules, resulting in the formation of an ordered structure of the film.For the two binary co-assembly Department conducted experiments to explore, experiment results not only help people understand the scope of co-assembly method, but also provides a new approach for the design and preparation of defect-free inverse opal film.