Opal-like Multicolor Appearance of Self-Assembled Photonic Array.
Opal-like Multicolor Appearance of Self-Assembled Photonic Array.
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DOI：
10.1021/acsami.8b04912
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发表时间：
2018-06-20
影响因子：
9.5
通讯作者：
Gazit E
中科院分区：
文献类型：
--
作者：
Arnon ZA;Pinotsi D;Schmidt M;Gilead S;Guterman T;Sadhanala A;Ahmad S;Levin A;Walther P;Kaminski CF;Fändrich M;Kaminski Schierle GS;Adler-Abramovich L;Shimon LJW;Gazit E
短肽构建块的分子自组装导致各种可能具有独特物理性质的材料结构的形成。最近的研究以二苯丙氨酸（FF）结构家族为原型模型，证实了生物芳香性在肽自组装中的关键作用。肽基分子工程的另一个重要方向是使用氟酰甲氧基羰基（Fmoc）修饰，它可以促进组装过程，并可能产生具有独特特征的纳米结构和具有超分子特征和纳米级有序的宏观水凝胶。在这里，我们探索了受保护的，非编码的氟酰甲氧羰基-β，β-二苯基- α - oh （Fmoc-Dip）氨基酸的自组装。这一过程导致形成具有明显芳香连续性的细长针状晶体。通过改变组装条件，形成了具有强光散射的球形颗粒阵列。这些排列显示出鲜艳的色彩，与蛋白石的外观非常相似。然而，与由蛋白石排列产生的瑞利散射效应不同，所描述的光学现象归因于米氏散射。此外，通过控制溶液蒸发速率，即组装动力学，我们能够操纵得到的着色。这项工作展示了一种自下而上的方法，利用受保护的氨基酸最小构建块的自组装来创建有机的、光散射的彩色表面阵列。
Molecular self-assembly of short peptide building blocks leads to the formation of various material architectures that may possess unique physical properties. Recent studies had confirmed the key role of biaromaticity in peptide self-assembly, with the diphenylalanine (FF) structural family as an archetypal model. Another significant direction in the molecular engineering of peptide building blocks is the use of fluorenylmethoxycarbonyl (Fmoc) modification, which promotes the assembly process and may result in nanostructures with distinctive features and macroscopic hydrogel with supramolecular features and nanoscale order. Here, we explored the self-assembly of the protected, noncoded fluorenylmethoxycarbonyl-β,β-diphenyl-Ala-OH (Fmoc-Dip) amino acid. This process results in the formation of elongated needle-like crystals with notable aromatic continuity. By altering the assembly conditions, arrays of spherical particles were formed that exhibit strong light scattering. These arrays display vivid coloration, strongly resembling the appearance of opal gemstones. However, unlike the Rayleigh scattering effect produced by the arrangement of opal, the described optical phenomenon is attributed to Mie scattering. Moreover, by controlling the solution evaporation rate, i.e., the assembly kinetics, we were able to manipulate the resulting coloration. This work demonstrates a bottom-up approach, utilizing self-assembly of a protected amino acid minimal building block, to create arrays of organic, light-scattering colorful surfaces.
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影响因子：
21.8
作者：
Frederix, Pim W. J. M.;Scott, Gary G.;Tuttle, Tell
通讯作者：
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影响因子：
3
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Kremer, JR;Mastronarde, DN;McIntosh, JR
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15
作者：
Liang, Chen;Ni, Rong;Lynn, David G.
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16.6
作者：
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通讯作者：
Gazit, Ehud
淀粉样蛋白肽分子突变中晶体和原纤维形成之间的竞争
影响因子：
16.6
作者：
Reynolds NP;Adamcik J;Berryman JT;Handschin S;Zanjani AAH;Li W;Liu K;Zhang A;Mezzenga R
通讯作者：
Mezzenga R