Interestingly, the conductance of the high G state (10 -3 G0) is more than one order of magnitude larger than the low G state (≈10 -4 -10 -5 G0). The molecular displacement corresponding to the high G state is approximately 0.4 nm, and the molecular conductance of the high G state is independent of the alkyl side chain length for R3-R12 (Fig. and Supplementary Fig. ).