二元共组装法制备无裂痕反蛋白石结构薄膜的研究

发布时间：2018-05-07 18:37

本文选题：共组装 + 反蛋白石结构　；参考：《化学学报》2017年10期

【摘要】：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.
[Abstract]:In recent years, due to extensive potential applications in the fields of optics, electricity and biochemistry, the research of ordered porous inverse opal thin film has attracted wide attention. However, it often forms some uncontrollable defects in the preparation process, limiting the popularization and practical application of this kind of material. By using two kinds of substrates before using it The feasibility of the two element system co assembly method to prepare the non fissure anti opal structure film was investigated. The structure of the thin film was characterized by scanning electron microscope and visible spectrum. The results showed that the colloidal beads were not affected in order in the order of the colloidal beads. Under the conditions, the ethyl orthosilicate has a sol-gel transition in the gap between the small spheres and is assembled with the microspheres together into an orderly and compact whole. After removing the microsphere template, a large scale (200 m) non defective and ordered inverse opal structure film can be obtained. For the large molecular silk egg white system, it has a strong interaction with the colloidal beads. The force, which inhibits the orderly assembly of the colloid beads, leads to the failure to form an ordered structure film. The experimental exploration of two kinds of two element Co assembly system has been carried out. The experimental results not only help people understand the scope of the application of the co assembly, but also provide a new way for the design and preparation of the defective opal film.

【作者单位】：厦门大学材料学院物理科学与技术学院生物仿生及软物质研究院福建省柔性功能材料重点实验室;新加坡国立大学物理系;
【基金】：国家自然科学基金(Nos.21401154,U1405226) 111计划(No.B16029) 广东省自然科学基金(No.2014A030310005) 厦门大学校长基金(No.20720170011)资助~~
【分类号】：TB383.2

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