通过光系统I（Photosystem I）单层膜在氮化钛上亲水自组装单层膜的取向诱导的电流整流
Current rectification via Photosystem I monolayers induced by their orientation on hydrophilic self-assembled monolayers on titanium nitride
AI总结：
本研究利用带亲水端基的有机膦酸盐自组装分子在超平氮化钛上固定取向特定的PSI单层膜，测得最高约200的电流整流比，验证了基于蛋白内部电偶极子的整流机制，该自下而上制备方法可为PSI的光电子等研究提供支撑。
摘要：
光系统I（Photosystem I，PSI）是一种光合蛋白，经进化可高效地通过类囊体膜传递电子。这一卓越过程吸引了生物分子电子学领域的关注，该领域旨在通过将PSI聚集体与固态金属触点接触，研究并理解这些蛋白内部的电子输运机制。本文拓展了已发表的、以特定取向固定PSI单层膜的研究工作，方法是在超平氮化钛表面使用带有亲水端基的有机膦酸盐自组装分子。采用共晶镓铟（GaIn）顶触点进行的电学测量显示，电流整流比最高可达约200。此前提出的、依赖于蛋白内部电偶极子的整流机制，通过测量功函数的偏移得到了探究。我们这种简便的自下而上制备方法，可支持对PSI分子开展进一步实验研究，例如将其嵌入固态透明顶触点结构中以进行光电子测量。
英文摘要：
Photosystem I (PSI) is a photosynthetic protein which evolved to efficiently transfer electrons through the thylakoid membrane. This remarkable process attracted the attention of the biomolecular electronics community, which aims to study and understand the underlying electronic transport through these proteins by contacting ensembles of PSI with solid-state metallic contacts. This paper extends published work of immobilizing monolayers of PSI with a specific orientation, by using organophosphonate self-assembled molecules with hydrophilic heads on ultra-flat titanium nitride. Electrical measurements carried out with eutectic GaIn top contacts showed current rectification ratios of up to ~200. The previously proposed rectification mechanism, relying on the protein's internal electric dipole, was inquired by measuring shifts in the work function. Our straightforward bottom-up fabrication method may allow for further experimental studies on PSI molecules, such as embedding them in solid-state, transparent top contact schemes for optoelectronic measurements.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
