Fig. 2: Atomically precise SAP.
From: On-surface synthesis of tailored organic platforms for single metal atoms
a, f Experimental STM (orange color scale, It = 100 pA, Vb = ‒ 0.3 V (a), It = 50 pA, Vb = ‒0.1 V (f)) and nc-AFM (gray color scale, Δz = + 170 pm (a), Δz = + 190 pm (f)) images of the 1D polymer obtained from the DBAP-tpy precursor on Au(111) via the OSS approach, before (a) and after (f) decoration with cobalt atoms. b, g Chemical structure of the obtained polymers. Bold segments indicate higher parts (i.e., further from the surface plane). c, h Zoom-in experimental nc-AFM images (Δz = + 150 pm (c), Δz = + 200 pm (h)) of a tpy (c) and a tpy-Co (h) unit. d, i Simulated nc-AFM images of a tpy (d) and a tpy-Co (i) unit obtained from the structures in (e) and (j), respectively. e, j Zoom-in of the DFT-optimized geometries of a polymer segment on Au(111), without (e) and with (j) cobalt atoms coordinated to the tpy sites. Scale bars: 1 nm (a, f), 0.5 nm (c, d, h, i).
