EurekAlert  June 17, 2024 Porous covalent organic frameworks (COFs) enable the realization of functional materials with molecular precision. Past research has typically focused on generating rigid frameworks where structural and optoelectronic properties are static. Constructing dynamic, yet crystalline and robust frameworks require a well-controlled degree of flexibility. An international team of researchers (UK, Germany, USA – Stony Brook University) has developed dynamic 2D COFs that can open and close their pores upon uptake or removal of guests while retaining their crystalline long-range order. The process requires a well-controlled degree of flexibility. They achieved this through a ‘wine rack’ design where […]