Plastic reusable pH indicator strips: preparation via anion-exchange of poly(ionic liquids) with anionic dyes

• DOI: 10.1039/c2py21076b
• Publication Date: 2012-12-18T16:40:08Z
• Authors: Jiangna Guo; Lihua Qiu; Zhijun Deng; Feng Yan
• Keywords: STRIPS; Anion exchanger

Plastic 1–14 pH indicator strips were prepared via cross-linking of an ionic liquid (IL) monomer, 1-butyl-3-vinylimidazolium bromide ([Bvim][Br]), with acrylonitrile, and followed by anion-exchange anionic dyes. The resultant exhibit enhanced pH-responsive colour changes robust pH-response reversibility in both aqueous organic solutions.