A Mechanical Single-molecule Potentiometer Based on Foldamer

Abstract

Molecular potentiometers that can indicate displacement-conductance relationship and predict the molecular conductance are of significant importance towards the real application of molecule-based devices but rarely developed so far. To this end, Li et al. design a single-molecule potentiometer based on ortho-pentaphenylene derivatives. They demonstrated that these pseudoelastic molecules can be stretched and compressed by the mechanical force of the Au electrode along with a dramatically variable conductance by up to two orders of magnitude, demonstrating the great potential as angstrom-scale single-molecule potentiometers. This work has been published in Nature Communications, 2021.

References

[1] Xiang D, Wang X, Jia C, Lee T, Guo X. Chem. Rev., 201, 116: 4318.

[2] Lafferentz L, Ample F, Yu H, Hecht S, Joachim C, Grill L. Science, 2009, 323: 1193.

[3] Haiss W, Wang C, Grace I, Batsanov A S, Schiffrin D J, Higgins S J, Bryce M R, Lambert C J, Nichols R J. Nat. Mater., 200, 5: 995.

[4] Stefani D, Perrin M, Gutiérrez-Cerón C, Aragonès A C, Labra-Muñoz J, Carrasco R D C, Matsushita Y, Futera Z, Labuta J, Ngo T H, Ariga K, Díez-Pérez I, van der Zant H S J, Dulić D, Hill J P. ChemistrySelect, 2018, 3: 6473.

[5] Stefani D, Weiland K J, Skripnik M, Hsu C, Perrin M L, Mayor M, Pauly F, van der Zant H S J. Nano Lett., 2018, 18: 5981.

[6] Camarasa-Gómez M, Hernangómez-Pérez D, Inkpen M S, Lovat G, Fung E D, Roy X, Venkataraman L, Evers F. Nano Lett., 2020, 20: 6381.

[7] Meisner J S, Kamenetska M, Krikorian M, Steigerwald M L, Venkataraman L, Nuckolls C. Nano Lett., 2011, 11: 1575.

[8] Su T A, Li H, Steigerwald M L, Venkataraman L, Nuckolls C. Nat. Chem., 2015, 7: 215.

[9] Zang Y, Zou Q, Fu T, Ng F, Fowler B, Yang J, Li H, Steigerwald M L, Nuckolls C, Venkataraman L. Nat. Commun., 2019, 10: 4482.

[10] Aradhya S V, Meisner J S, Krikorian M, Ahn S, Parameswaran R, Steigerwald M L, Nuckolls C, Venkataraman L. Nano Lett., 2012, 12: 1643.

[11] Li J, Shen P, Zhen S, Tang C, Ye Y, Zhou D, Hong W, Zhao Z, Tang B Z. Nat. Commun., 2021, 12: 167.

[12] Hartley C S. Accounts Chem. Res., 201, 49: 646.