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Proposed mechanism of hierarchical assembly. (a) Isothermal self-assembly of 2 to form 216. (b) Thermal induced assembly of 216. Upon reaching the Tt, 216 forms a hydrated globule, ii, with a hydrodynamic diameter of ~1 ⌠m. iii, The entropically favorable dehydration of the globule leads to a more compact nanoparticle with a diameter of ~325 nm. iv, Beyond 74 °C the assemblies melt, inducing the formation of ill-defined aggregates of large polydispersity.
