Functionalization on polyamide complex with iodide: a review

Abstract Application with iodinated polyamide‐6 (iodine/PA‐6 complex) is introduced for modification of structure and functionality on the polyamide. Coordination between polyiodides (I n − = 3, 5, ...) and the polyamide advances rapidly and drastically within polyiodide solutions even in bulky samples of the polyamide, and responsiveness in the complex with other molecules such as water is enhanced by coordination. Such response and variation of the structure of the complex can introduce novel functionality with other molecules or ions or salts into the polyamide or hydrophilic polymers.