Northwestern researchers achieve unprecedented control of polymer grids
(Northwestern University) The first examples of covalent organic frameworks (COFs) were discovered in 2005, but quality has been poor and preparation methods uncontrolled. Now a Northwestern University research team is the first to produce high-quality versions of these materials, demonstrate their superior properties and control their growth. The team's two-step process produces organic polymers with crystalline, two-dimensional structures. The precision of the material's structure and the empty space its hexagonal pores provide will allow scientists to design new materials with desirable properties.