Covalent Organic Frameworks In article number 2205949, Dana Dina Medina, Ralf Thomas Weitz, Timothy Clark and co-workers describe the synthesis of covalent organic frameworks (COFs) based on a thiophene-extended benzotrithiophene (BTT) building block. Oriented thin films BTT COFs show room-temperature in-plane electrical conductivity up to 10−4 S m−1 trap-dominated charge transport via hopping ...