In a more complex case, Abylgazina et al. showed that tuning the particle size of DUT-8(Zn) 7 could lead to an inversion of adsorptive chemoselectivity. Indeed, activate of assynthesized DUT-8(Zn) leads to a phase transtion (gate closing) upon removal of solvent from the pores. However, while micro-sized crystals showed selective reopening in the presence of dichloromethane (DCM) over alcohols, crystal downsizing to micron level reversed that gate opening selectivity. This unexpected finding is one aspect of a more general (and more complex) picture of guest-selective shape-memory effect in DUT-8(Zn), where the flexibility is a function of both crystal size and guest nature -in ways that are not yet fully understood. It is relevant to note that, although the effect of crystal size on flexibility of framework materials has been mostly studied through the facet of adsorption-induced flexibility, it also extends to other aspects of flexibility. Tiba et al. convincingly showed that crystal downsizing of a shape-memory MOF could also increase its mechanical rigidity, even in the absence of adsorption -which was visible in the increase of Young's modulus of the crystals, as measured by atomic force microscopy nanoindentation.