Naked-eye-based highly selective sensing of Fe3+ and further for PPi with nano copolymer film

Novel rhodamine-functionalized electrospun film was synthesized and utilized as colorimetric chemosensor for Fe3+ and further for PPi for the first time. This prepared copolymer was electrospun into nano film, as a solid-state sensor, which exhibits highly selective recognition of Fe3+ ions with a distinct color change from colorless to pink in very fast response time (<1 min). As the resultant product, the Fe3+-contaminated nano film showed recovered color change by extra addition of PPi solution.