Fig. 2 Reaction kinetics in single-molecule junctions with OEEFs and in NMR tube. Reaction kinetics in single-molecule junctions with OEEFs and in NMR.

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Fig. 2 Reaction kinetics in single-molecule junctions with OEEFs and in NMR tube. Reaction kinetics in single-molecule junctions with OEEFs and in NMR tube. The relative proportion between different components analyzed from in situ single-molecule conductance measurement and NMR analysis for (A) the Diels-Alder addition process and (B) the aromatization process in this cascade reaction. The hollow circles and solid circles represent the results analyzed from NMR and conductance histograms, respectively. The data points were fitted with dashed and solid lines, respectively. (C) Reaction kinetics of the aromatization process in single-molecule junctions under different bias voltages. The proportion of compound c was also extracted from conductance histograms. The square represents the reaction under 10 mV; solid circle, 30 mV; triangle, 50 mV; diamond, 100 mV; and pentagon, 200 mV. (D) The reaction rate for the transformation from compound b to c varies under different bias voltages according to the fitted results in (C). Xiaoyan Huang et al. Sci Adv 2019;5:eaaw3072 Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).