Publications [#231867] of David N. Beratan

Journal Articles

  1. Wierzbinski, E; Venkatramani, R; Davis, KL; Bezer, S; Kong, J; Xing, Y; Borguet, E; Achim, C; Beratan, DN; Waldeck, DH, "The single-molecule conductance and electrochemical electron-transfer rate are related by a power law.", ACS nanoJune,, 2013, 7(6), 5391-5401 [23692478], [doi].
    (last updated on 2024/04/16)

    Abstract:
    This study examines quantitative correlations between molecular conductances and standard electrochemical rate constants for alkanes and peptide nucleic acid (PNA) oligomers as a function of the length, structure, and charge transport mechanism. The experimental data show a power-law relationship between conductances and charge transfer rates within a given class of molecules with the same bridge chemistry, and a lack of correlation when a more diverse group of molecules is compared, in contrast with some theoretical predictions. Surprisingly, the PNA duplexes exhibit the lowest charge-transfer rates and the highest molecular conductances. The nonlinear rate-conductance relationships for structures with the same bridging chemistries are attributed to differences in the charge-mediation characteristics of the molecular bridge, energy barrier shifts and electronic dephasing, in the two different experimental settings.