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Insight into induced charges at metal surfaces and biointerfaces using a polarizable Lennard–Jones potential

Author

Listed:
  • Isidro Lorenzo Geada

    (University of Mainz)

  • Hadi Ramezani-Dakhel

    (University of Akron
    University of Chicago
    University of Chicago)

  • Tariq Jamil

    (University of Colorado-Boulder)

  • Marialore Sulpizi

    (University of Mainz)

  • Hendrik Heinz

    (University of Akron
    University of Colorado-Boulder)

Abstract

Metallic nanostructures have become popular for applications in therapeutics, catalysts, imaging, and gene delivery. Molecular dynamics simulations are gaining influence to predict nanostructure assembly and performance; however, instantaneous polarization effects due to induced charges in the free electron gas are not routinely included. Here we present a simple, compatible, and accurate polarizable potential for gold that consists of a Lennard–Jones potential and a harmonically coupled core-shell charge pair for every metal atom. The model reproduces the classical image potential of adsorbed ions as well as surface, bulk, and aqueous interfacial properties in excellent agreement with experiment. Induced charges affect the adsorption of ions onto gold surfaces in the gas phase at a strength similar to chemical bonds while ions and charged peptides in solution are influenced at a strength similar to intermolecular bonds. The proposed model can be applied to complex gold interfaces, electrode processes, and extended to other metals.

Suggested Citation

  • Isidro Lorenzo Geada & Hadi Ramezani-Dakhel & Tariq Jamil & Marialore Sulpizi & Hendrik Heinz, 2018. "Insight into induced charges at metal surfaces and biointerfaces using a polarizable Lennard–Jones potential," Nature Communications, Nature, vol. 9(1), pages 1-14, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-03137-8
    DOI: 10.1038/s41467-018-03137-8
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    Cited by:

    1. Liang Qiao & Nia Pollard & Ravithree D. Senanayake & Zhi Yang & Minjung Kim & Arzeena S. Ali & Minh Tam Hoang & Nan Yao & Yimo Han & Rigoberto Hernandez & Andre Z. Clayborne & Matthew R. Jones, 2023. "Atomically precise nanoclusters predominantly seed gold nanoparticle syntheses," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    2. Jordan J. Winetrout & Krishan Kanhaiya & Joshua Kemppainen & Pieter J. in ‘t Veld & Geeta Sachdeva & Ravindra Pandey & Behzad Damirchi & Adri Duin & Gregory M. Odegard & Hendrik Heinz, 2024. "Implementing reactivity in molecular dynamics simulations with harmonic force fields," Nature Communications, Nature, vol. 15(1), pages 1-16, December.

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