串联蛋白质与氧化石墨烯的可编程分子复合物用于高效的Bimoprh致动器
Programmable Molecular Composites of Tandem Proteins with Graphene-Oxide for Efficient Bimoprh Actuators
摘要:
二维(2D)材料光谱的快速扩展推动了对2D复合材料和异质结构制造的研究。二维材料的高度有序结构为精确控制复合材料的最终结构和性能提供了良好的平台。然而,对粘附材料的结构及其与高度有序的2D材料的相互作用的有限控制导致具有较差性能的有缺陷的复合材料。在这里,我们展示了成功的合成,整合和表征的混合2D材料系统组成的串联重复(TR)蛋白的启发鱿鱼环齿和氧化石墨烯(GO)。TR蛋白层充当GO层之间的独特可编程分子间隔区。作为一个应用,我们进一步证明了热驱动使用双压电晶片分子复合薄膜。由分子复合膜(GO/TR)制成的双晶致动器可以导致比由GO层和TR蛋白质层组成的常规双晶致动器高18倍的能量效率(即,GO和TR的常规块体复合材料)。此外,分子复合双晶致动器可以通过使用具有更高分子量的TR蛋白质达到高达1.2cm-1的曲率值,这是常规GO和TR复合材料的3倍。
英文摘要:
The rapid expansion in the spectrum of two-dimensional (2D) materials has driven the efforts of research on the fabrication of 2D composites and heterostructures. Highly ordered structure of 2D materials provides an excellent platform for controlling the ultimate structure and properties of the composite material with precision. However, limited control over the structure of the adherent material and its interactions with highly ordered 2D materials results in defective composites with inferior performance. Here, we demonstrate the successful synthesis, integration, and characterization of hybrid 2D material systems consisting of tandem repeat (TR) proteins inspired by squid ring teeth and graphene oxide (GO). The TR protein layer acts as a unique programmable molecular spacer between GO layers. As an application, we further demonstrate thermal actuation using bimorph molecular composite films. Bimorph actuators made of molecular composite films (GO/TR) can lead to energy efficiencies 18 times higher than regular bimorph actuators consisting of a GO layer and a TR protein layer (i.e., conventional bulk composite of GO and TR). Additionally, molecular composite bimorph actuators can reach curvature values as high as 1.2 cm-1 by using TR proteins with higher molecular weight, which is 3 times higher than conventional GO and TR composites.
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