Presence or absence of intercalated ions has a pronounced effect on the preferred orientation of PTI-IF and PTI-LiBr crystals on substrates such as the carbon net used in CBED experiments. The structural formula of PTI-LiBr and PTI-IF is shown in Figure , a. An explanation of the orientation analysis is given in the SI (Figure ). The majority of 52% of PTI-LiBr crystals is tilted away from the 001 orientation (Figure ). This means that the majority of PTI-LiBr crystals orient themselves with the long side of the pillars in parallel to the substrate and perpendicular to the incident electron beam (X)as indicated by the wireframe model.