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. 2013 Feb 27;117(11):5718–5721. doi: 10.1021/jp310316b

Figure 1.

Figure 1

(a) DFT-calculated isodensity representation of the singly occupied molecular orbital (SOMO) of the stable π radical BDPA (C33H21) from ref (19). (b) STM topographic image of 0.2 monolayers of BDPA grown at 300 K on the Au(111) surface (+0.5 V, 50 pA, 7 K); scale bar = 1 nm. (c,d) Spectroscopic dI/dV maps at different electron energies (6 × 6 nm2); overlaid contour lines (dashed) mark areas covered by BDPA molecules as extracted from STM topographs; arrows indicate a surface defect.