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Nature communications. 2024 Sep 27;15(1):8300. doi: 10.1038/s41467-024-52496-y Q115.72025

Molecular switching by proton-coupled electron transport drives giant negative differential resistance

质子耦合电子运输驱动的分子开关产生巨大的负微分电阻现象 翻译改进

Qian Zhang  1  2, Yulong Wang  1, Cameron Nickle  3, Ziyu Zhang  1, Andrea Leoncini  1, Dong-Chen Qi  4, Kai Sotthewes  5, Alessandro Borrini  6, Harold J W Zandvliet  5, Enrique Del Barco  7, Damien Thompson  8, Christian A Nijhuis  9

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作者单位

  • 1 Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, Singapore.
  • 2 School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China.
  • 3 Department of Physics, University of Central Florida, Orlando, FL, USA.
  • 4 Centre for Materials Science, School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD, Australia.
  • 5 Physics of Interfaces and Nanomaterials, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, Enschede, The Netherlands.
  • 6 Hybrid Materials for Opto-Electronics Group, Department of Molecules and Materials, MESA+ Institute for Nanotechnology, Molecules Center and Center for Brain-Inspired Nano Systems, Faculty of Science and Technology, University of Twente, Enschede, The Netherlands.
  • 7 Department of Physics, University of Central Florida, Orlando, FL, USA. delbarco@ucf.edu.
  • 8 Department of Physics, Bernal Institute, University of Limerick, Limerick, Ireland. damien.thompson@ul.ie.
  • 9 Hybrid Materials for Opto-Electronics Group, Department of Molecules and Materials, MESA+ Institute for Nanotechnology, Molecules Center and Center for Brain-Inspired Nano Systems, Faculty of Science and Technology, University of Twente, Enschede, The Netherlands. c.a.nijhuis@utwente.nl.

    • DOI: 10.1038/s41467-024-52496-y PMID: 39333486

    摘要 中英对照阅读

    To develop new types of dynamic molecular devices with atomic-scale control over electronic function, new types of molecular switches are needed with time-dependent switching probabilities. We report such a molecular switch based on proton-coupled electron transfer (PCET) reaction with giant hysteric negative differential resistance (NDR) with peak-to-valley ratios of 120 ± 6.6 and memory on/off ratios of (2.4 ± 0.6) × 103. The switching dynamics probabilities are modulated by bias voltage sweep rate and can also be controlled by pH and relative humidity, confirmed by kinetic isotope effect measurements. The demonstrated dynamical and environment-specific modulation of giant NDR and memory effects provide new opportunities for bioelectronics and artificial neural networks.

    Keywords：molecular switching

    为了开发具有原子级控制电子功能的新型动态分子器件，需要时间依赖型切换概率的新型分子开关。我们报告了一种基于质子耦合电子转移（PCET）反应的分子开关，该开关表现出巨大的回滞负微分电阻（NDR），峰值与谷值比为120 ± 6.6，记忆开/关比为(2.4 ± 0.6) × 10³。切换动态概率可以通过偏置电压扫描速率调节，并且也可以通过pH值和相对湿度进行控制，这一点通过动力学同位素效应测量得到了证实。所展示的动态环境特异性调制的巨大NDR和记忆效应为生物电子学和人工神经网络提供了新的机会。

    © 2024. The Author(s).

    关键词：分子开关; 质子耦合电子传输; 负阻特性

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    期刊名：Nature communications

    缩写：NAT COMMUN

    ISSN：N/A

    e-ISSN：2041-1723

    IF/分区：15.7/Q1

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