The color of squaraine solution shows a “fingerprint” change upon addition of different surfactants. A cross-responsive sensing array based on a small molecular probe was applied to discriminate surfactants with 100% confidence limits. Furthermore, the probe can selectively detect sodium dodecyl sulfate (SDS) with turn-on fluorescence response.
The article was received on 21 Jul 2015, accepted on 14 Aug 2015 and first published on 14 Aug 2015
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