Generation of luminescence in biomineralized zirconia by zirconia-binding peptides
Generation of luminescence in biomineralized zirconia by zirconia-binding peptides
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DOI：
10.1039/c4ce01510j
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发表时间：
2015-02
期刊：
影响因子：
3.1
通讯作者：
D. Rothenstein;D. Shopova-Gospodinova;G. Bakradze;L. Jeurgens;J. Bill
中科院分区：
文献类型：
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作者：
D. Rothenstein;D. Shopova-Gospodinova;G. Bakradze;L. Jeurgens;J. Bill
目前的材料研究受到生物矿化过程的启发，其中蛋白质在软反应条件下控制无机材料的形成。生物矿化原理的实施是一种很有前途的方法，以产生定制的材料性能，用于开发应用程序和设备。结果表明无机结合肽、生物矿化和新材料性能的产生之间存在直接联系。通过噬菌体展示选择与氧化钇稳定的氧化锆特异性结合的肽，并分析其氨基酸组成。基于这些结果，选择肽6-3-06（SWNNMGWLPTFG）用于肽辅助合成，产生具有光致发光特性的生物矿化氧化锆基（BZO）材料。通过X-射线光电子能谱的材料表征揭示了在无机相中的肽的掺入。更重要的是，这种特定的结构在室温下在蓝色波长区域（~2.7 keV）产生光致发光（PL），这主要归因于由有机-无机界面引入的带隙中的状态。这种PL特性是BZO独有的，而在不存在肽的情况下矿化的样品不显示PL。数据清楚地表明，通过生物矿化，可以产生技术材料的新材料特性。重要的是，这种方法可以推广到其他无机材料。
Current materials research is inspired from biomineralization processes, where proteins control the formation of inorganic materials under soft reaction conditions. The implementation of biomineralization principles is a promising approach to generate tailored material properties for developing applications and devices. The results show the direct link between inorganic-binding peptides, biomineralization and the generation of new materials properties. Peptides which specifically bind to yttria-stabilized zirconia are selected by phage display and analyzed with regard to their amino acid composition. Based on these results the peptide 6-3-06 (SWNNMGWLPTFG) is selected for the peptide-assisted synthesis, generating biomineralized zirconia-based (BZO) material with photoluminescent properties. The material characterization by means of X-ray photoelectron spectroscopy reveals the incorporation of the peptide in the inorganic phase. More important this specific structure gives rise to photoluminescence (PL) in the blue wavelength region (~2.7 keV) at room temperature which is mainly attributed to states in the band gap introduced by organic–inorganic interfaces. This PL property is exclusive to the BZO whereas samples mineralized in the absence of the peptide did not show PL. The data clearly demonstrate that by biomineralization new material properties for technical materials can be generated. Importantly, this approach can be generalized for other inorganic materials.