Long-Range Proton Transport in Films from a Reflectin-Derived Polypeptide
Long-Range Proton Transport in Films from a Reflectin-Derived Polypeptide
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反射蛋白衍生多肽薄膜中的长程质子传输
DOI：
10.1021/acsami.0c18929
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
Chengyi Xu, Nabin Kandel
中科院分区：
文献类型：
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作者：
Chengyi Xu, Nabin Kandel
基于蛋白质和肽的质子导体由于其在生物过程中的重要作用以及在生物电子器件应用中的潜在价值而得到了广泛的研究。然而，尽管取得了很大进展，但此类材料的长距离质子传输的演示仍然相对罕见。在此，我们制造，电询问，和物理表征膜从反射蛋白衍生的多肽。的电气测量表明，设备集成的膜表现出质子电导率与值为10.4 mS/cm和维持质子运输超过10.1 mm的距离。伴随的物理表征表明，多肽具有类似于那些父母的蛋白质类的特性，并使洞察到的多肽的电功能和结构之间的关系在固态。当综合考虑时，我们的发现不仅对基于反射蛋白的材料而且对其他生物启发的质子导体的持续开发和工程具有重要意义。
Protein- and peptide-based proton conductors have been extensively studied because of their important roles in biological processes and established potential for bioelectronic device applications. However, despite much progress, the demonstration of long-range proton transport for such materials has remained relatively rare. Herein, we fabricate, electrically interrogate, and physically characterize films from a reflectin-derived polypeptide. The electrical measurements indicate that device-integrated films exhibit proton conductivities with values of ∼0.4 mS/cm and sustain proton transport over distances of ∼1 mm. The accompanying physical characterization indicates that the polypeptide possesses characteristics analogous to those of the parent protein class and furnishes insight into the relationship between the polypeptide’s electrical functionality and structure in the solid state. When considered together, our findings hold significance for the continued development and engineering of not only reflectin-based materials but also other bioinspired proton conductors.