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. 2023 Apr 6;14:1922. doi: 10.1038/s41467-023-37171-y

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© The Author(s) 2023

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Fig. 2 — a ORTEP drawings of the molecular structures (ellipsoid probability 50%), indicating the dihedral angle (θ) between the benzyl and alkoxy groups. b Perspective view along the π-π stacking direction, indicating longitudinal (X) and transverse displacements (Y) between neighboring molecules. c Side view of the PBI π-core, indicating counter pitch angle (δ) for the longitudinal slip and the distance between the π-planes (d_π-π). d View along the column axis, indicating the skew angle (α) between neighboring columns.