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. 2019 Apr 16;141(18):7399–7406. doi: 10.1021/jacs.9b01267

Figure 6.

Figure 6

Electronic properties of dibenzoperihexacenes 3a and 3b (with and without tBu groups) and dibenzoperioctacene 6 (with tBu groups) measured on Au(111). (a, e, i) STS spectroscopies recorded at the positions marked in the corresponding STM images (b, f, j) with the same colored dots. The spectra are vertically offset from each other for clarity. (b, f, j) STM images of the individual nanographene molecules with the corresponding molecular structures overlaid (imaging set point: (b, f, j) −1.0 V, 100 pA; and (c, d, g, h, k, l) dI/dV maps recorded at −0.6 V, +1.5 V, −0.6 V, +1.5 V, −0.2 V, and +1.1 V, respectively).