Fig. 3: Four-membered TPE macrocycles (M4) formed on Ag(111).
From: On-surface synthesis and spontaneous segregation of conjugated tetraphenylethylene macrocycles
a Large-scale STM image (200 nm × 100 nm; 2.0 V, 100 pA) of the 2D crystalline monolayer made of four-membered macrocycles (M4). Inset: FFT pattern. The dashed white lines indicate several domain boundaries. b Zoom in STM image (2.0 V, 200 pA) of the M4 2D crystal with a domain boundary (dashed line). The blue rectangles denote the unit cell of the 90° rotated domains. c, d High-resolution STM image (−1.0 V, 150 pA) and chemical model of M4. Scale bar: 1 nm. e Schematic model of the M4 2D crystal.
