Overall, the differences between our computational adsorption energy (with a single molecule) and the experimental estimation fitting the Temkin adsorption isotherm for GMO can be understood through the steric hindrance for molecules adsorbing into partially formed monolayers. The kink in the Z-unsaturated tailgroup of GMO will lead to larger kinetic barriers for molecules to pass through the film and adsorb on the hematite surface. As well as affecting the kinetics of adsorption, this may also influence the thermodynamics. The steric barrier could also lead to a reduction in the adsorption energy for GMO (as predicted from the HFRR experiments) since on average, molecules are trapped further from the surface.