Fig. 1: Schematic of photoredox reaction studied, the scanning tunneling microscope-based break junction (STM-BJ) measurement, and conductance results.
From: Photooxidation driven formation of Fe-Au linked ferrocene-based single-molecule junctions
a Mechanism of photoredox reaction for ferrocene derivatives. R2I+ is an iodonium salt (R: 4-tert-butylphenyl; counterion: [PF6]−). b Schematic representation of two distinct single-molecule junction geometries formed with 1 between two Au electrodes during scanning tunneling microscope-based break junction (STM-BJ) measurements. 1H and 1L denote two distinct junction geometries. c Left: Time-resolved conductance histograms of 1 measured at a 100 mV bias with the laser turned on or off (as indicated in the figure). Histograms are created by compiling consecutive sets of 100 conductance-distance traces. Right: Total one-dimensional (1D) conductance histogram of 1 showing conductance changes when with the 405 nm-laser on (dark purple) or off (light purple).
