Understanding the multiscale self-assembly of metal-organic polyhedra towards functionally graded porous gels.

ABSTRACT: Spatial heterogeneity and gradients within porous materials are key for controlling their mechanical properties and mass/energy transport, both in biological and synthetic materials. However, it is still challenging to induce such complexity in well-defined microporous materials such as crystalline metal-organic frameworks (MOFs). Here we show a method to generate a continuous gradient of porosity over multiple length scales by taking advantage of the amorphous nature of supramolecular polymers based on metal-organic polyhedra (MOPs). First, we use time-resolved dynamic light scattering (TRDLS) to elucidate the mechanism of hierarchical self-assembly of MOPs into colloidal gels and to understand the relationship between the MOP concentrations and the architecture of the resulting colloidal

SUBMITTER: Legrand A 

PROVIDER: S-EPMC7012067 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature