Fig. 2
From: A chiral molecular propeller designed for unidirectional rotations on a surface
Chirality and electronic structure. a STM image of two molecular propellers on Au(111) surface showing left-handed (M) and right-handed (P) chirality [Imaging parameters: Vt = −1.2 V, It = 70 pA]. b The pie-chart shows the statistics of M and P. c DFT calculated structure of a molecular propeller adsorbed on Au(111) slab (the ethyl groups on the indazole rings are omitted). The arrow indicates the Cp plane of the stator unit. d The molecular propeller structures for ‘M’ and ‘P’ are induced by the left and right tilting of the π-rings of the stator. The red-dashed lines indicate different tilting angle of the π-rings. e A 3-D electron density plot of the molecule adsorbed on Au(111) surface as revealed by the DFT calculation. f A drawing depicting a ratchet type stator that drives unidirectional rotation
