Fig. 7: Depolymerization dynamics at the HA–graphite interface.

a–h Sequential STM images showing the gradual removal of the 2DP domains from the surface of graphite and the concomitant adsorption of TPBA monomers and growth of SAMN domains at the HA–graphite interface. As evident from the image sequence, the 2DP domains between those marked by colored triangles gradually shrink and are removed from the surface. The position of marked triangles shifts in subsequent images due to the drift of the scanner which is larger in this sequence. Imaging conditions: Iset = 0.1 nA, Vbias = – 0.7 V or + 0.7 V. [TPBA] = 25 μM. (see also Fig. S12 in the supplementary information).