Single crystal fabrication. Single crystals of 2DQTT-o-B were fabricated through a dropcasting method. Solutions with concentrations between 10-15 mg mL -1 of 2DQTT-o-B dissolved in a 1:1 mixture of dichlorobenzene and decane were heated to 100 °C. 5-15 µL were dropped onto PTS-treated silicon wafers (SiO 2 /Si) and allowed to dry overnight. For large crystals (SCXRD and Raman experiments), 2DQTTo-B was dissolved in a 1:1 mixture of dichloromethane and ethyl acetate at 1 mg mL -1 in a 30 mL vial (up to about 15 mL of solution was used). The solution was then capped with parafilm and 1-5 holes were created in the film using a needle. The vial was then placed in a glove bag under nitrogen atmosphere for slow evaporation over a few weeks. The nitrogen in the glove bag was refilled every other day to prevent oxygen from reacting with the molecule and ensure saturation of solvent vapors did not occur.