Supramolecular hyper-branch polymerization using Host-guest interaction

Abstract

Among supramolecular chemistry, host-guest interactions describe two molecules that interact based on non-covalent bonds. Non-covalent bonds are weaker than covalent bonds but are used to make large molecules such as proteins and nucleic acids that are important for biochemical processes. In this work, we designed AOCB[6]-PY, in which host and guest molecules are linked, to become a tunable hyperbranched polymer through host-guest interactions. Cucurbit [6] uril (CB [6]) is a non-toxic host material that does not fully interact with the guest material pyridine at room temperature, but at high temperatures the activity of the host and guest molecules increases, forming a hyperbranched polymer. Therefore, we developed reusable hyperbranched polymers using temperature-dependent host-guest interactions to achieve antimicrobial polymer coatings.