The power of the weak: recognition of ion pairs in water using a simple array sensor.
An array sensor comprising six off-the-shelf indicators doped in a poly(ether-urethane) recognizes five cations, seven anions and thirty-five ion pairs at pH 5-9 in water. Such a discrimination capacity and recognition efficiency (6 : 35) with > or = 93% accuracy is rare. Low cost and wide availability of various polymers and indicators could make this approach useful in numerous applications.
Liu
Yuan-li
YL
Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, USA.
Palacios
Manuel A
MA
Anzenbacher
Pavel
P
D002412:Cations / Q000737:chemistry*; D016002:Discriminant Analysis; D005456:Fluorescent Dyes / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007477:Ions / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D013050:Spectrometry, Fluorescence; D014867:Water / Q000737:chemistry*
D002412:Cations; D005456:Fluorescent Dyes; D007477:Ions; D011108:Polymers; D014867:Water