Fig. 7
From: Supramolecular networks stabilise and functionalise black phosphorus
Islands of 1,2,4,5-tetrakis(4-carboxyphenyl)benzene on the melamine cyanurate-terminated black phosphorus surface. a Structure of 1,2,4,5-tetrakis(4-carboxyphenyl)benzene (TCPB); b Profile showing heights of monolayer TCPB islands and a BP terrace step as indicated in image c. c, d 2 µm × 1 µm and 500 nm × 250 nm, respectively, tapping mode AFM scans of TCPB islands; arrow in c shows an unterminated BP area which has degraded. These images were taken with Multi75Al-G probes using the fundamental resonance of 59.54 kHz; e Tapping mode AFM of a TCPB island showing individual molecules with lattice vectors a’ and b’ and schematic of hydrogen-bonded array overlaid. f Tapping mode AFM of the underlying CA.M network with TCPB lattice vectors and schematics overlaid. Images e, f were taken with Multi75Al-G probe using third harmonic of 1.107 Mhz
