Laboratory of Solution Chemistry of Advanced Materials and Technologies , ITMO University , St. Petersburg 197101 , Russian Federation.
Department of Physics & CICECO-Aveiro Institute of Materials , University of Aveiro , 3810-193 Aveiro , Portugal.
ACS Appl Mater Interfaces. 2018 Mar 28;10(12):10543-10551. doi: 10.1021/acsami.7b19668. Epub 2018 Mar 15.
Peptide-based nanostructures are very promising for nanotechnological applications because of their excellent self-assembly properties, biological and chemical flexibility, and unique multifunctional performance. However, one of the limiting factors for the integration of peptide assemblies into functional devices is poor control of their alignment and other geometrical parameters required for device fabrication. In this work, we report a novel method for the controlled deposition of one of the representative self-assembled peptides-diphenylalanine (FF)-using a commercial inkjet printer. The initial FF solution, which has been shown to readily self-assemble into different structures such as nano- and microtubes and microrods, was modified to be used as an efficient ink for the printing of aligned FF-based structures. Furthermore, during the development of the suitable ink, we were able to produce a novel type of FF conformation with high piezoelectric response and excellent stability. By using this method, ribbonlike microcrystals based on FF could be formed and precisely patterned on different surfaces. Possible mechanisms of structure formation and piezoelectric effect in printed microribbons are discussed along with the possible applications.
基于肽的纳米结构由于其出色的自组装特性、生物和化学灵活性以及独特的多功能性能，在纳米技术应用中非常有前途。然而，将肽组装体集成到功能器件中受到限制的一个因素是对其对准和其他用于器件制造的几何参数的控制较差。在这项工作中，我们报告了一种使用商业喷墨打印机控制沉积代表性自组装肽之一——二苯丙氨酸（FF）的新方法。最初的 FF 溶液已被证明可以很容易地自组装成不同的结构，如纳米和微管以及微棒，经过修饰后可作为一种有效的墨水，用于打印对齐的 FF 基结构。此外，在开发合适的墨水时，我们能够产生一种具有高压电响应和优异稳定性的新型 FF 构象。通过使用这种方法，可以在不同的表面上形成基于 FF 的带状微晶并进行精确图案化。讨论了打印微带中结构形成和压电效应的可能机制以及可能的应用。
