Fig. 1
From: Impact of molecular quadrupole moments on the energy levels at organic heterojunctions
Chemical structures and quadrupole components of small molecules: Values in brackets are the quadrupole components perpendicular to the molecular plane (Qπ), as calculated with density functional theory (DFT). Supplementary Table 1 summarises the in-plane quadrupole components. F4ZnPc is a mixture of different isomers, where the fluorine atom is bonded to one of the two outer carbon positions (2 or 3)20
