Science, Space and Technology News 2023
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“One of the most challenging goals in new structure design is the precise control of structure formation,” says Aleksandr Sapianik, a postdoc in the group of Mohamed Eddaoudi, who led the research. For reticular chemistry — the assembly of molecular building blocks into porous crystalline materials such as MOFs — the centering formwork concept might offer that precise control, the team realized.
The team developed centering structure-directing agents to control ST alignment and form ZMOF windows of new shapes and sizes. One set of cSDAs, designed to tighten the angle between adjoining ST units, created small windows. Another set, designed to expand the angle between ST units, gave larger windows.
The cSDA concept offers multiple benefits enhancing MOF performance, says Vincent Guillerm, a research scientist in Eddaoudi’s group. “The cSDA partitions big windows into smaller ones, which our preliminary results suggest will be useful for chemical separations,” he says. “It also offers additional internal pore surface, which can help to improve gas storage, and reinforces the MOF framework, which should improve the material’s stability,” he adds.
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