The slightly positive V° as 2.7 ± 0.7 cm 3 (Figure and Table ) suggests that the sumanene supramolecular polymerization responds little to hydrostatic pressure. This may indicate that the sumanene monomeric seeds stack densely on top of each other in the supramolecular polymer, even under atmospheric pressure. Finally, here, concentration-dependent UV spectra were measured by varying the mixing ratios of MCH in MCH+CH2Cl2 (see Figures and Tables ). As described above, K in MCH was 18600 M -1 , whereas in CH2Cl2 it was 630 M -1 , indicating a 30-fold change in K depending on the solvent character. Supramolecular polymers formed via the isodesmic model at all solvent mixing ratios. Moreover, a natural logarithm plot of K upon supramolecular polymerization as a function of the volume fraction of MCH in MCH+CH2Cl2, shows the existence of a threshold at VMCH/Vtotal as 0.25 (Figure and Table ). This threshold is attributable to the different solvations of MCH and CH2Cl2, both of which shape the solvent core around the polymer. As seen in Figure , in the CH2Cl2rich region, the sumanene monomer is much more stabilized/solvated by the better solvator, CH2Cl2, leading to lower formation of a supramolecular polymer owing to monomeric action. In contrast, in the MCH-rich region, the formation of a supramolecular polymer is much more energetically stable than monomer solvation by MCH. Therefore, it can be emphasized that K of the supramolecular polymers can be drastically switched around the threshold. In conclusion, for the first time, solution-state supramolecular polymerization of pristine buckybowl sumanene has been demonstrated. We also found that the solvent, rather than temperature and pressure, can dynamically control sumanenebased supramolecular polymerization at the threshold of the MCH-rich ratio in MCH+CH2Cl2. Finally, it should be emphasized that our findings will provide not only new design guidelines for constructing supramolecular polymers but also dynamic control approaches using relevant external stimuli.