Plastic reusable pH indicator strips: preparation via anion-exchange of poly(ionic liquids) with anionic dyes
Jiangna Guo (郭江娜), Lihua Qiu, Zhijun Deng and Feng Yan*（严锋）
Polym. Chem. 2013, 4, 1309-1312.
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 with anionic dyes. The resultant pH indicator strips exhibit enhanced pHresponsive colour changes and robust pH-response reversibility in both aqueous and organic solutions.
This paper was highlighted as“Paper of the week”: //blogs.rsc.org/py/2013/02/18/paper-of-the-week-plastic-reusable-ph-indicator-strips/ （by Polymer Chemistry Blog）
