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We so instantaneously detect Hg<jats:sup>2+<\/jats:sup> ions in water at a 500\u2005\u03bc<jats:sc>M<\/jats:sc> concentration. The sensor, conjugated non\u2010water soluble polymer <jats:bold>1<\/jats:bold> (XFPF), merely supports dibutylaniline substituents as binding units. Yet, selective and sensitive detection of Hg<jats:sup>2+<\/jats:sup>\u2010ions is achieved in water. The enhancement in sensory response, when comparing the reference compound <jats:bold>2<\/jats:bold> to that of <jats:bold>1<\/jats:bold> in a biphasic system in a microfluidic chip is &gt;10<jats:sup>3<\/jats:sup>. By manipulation of the structure of <jats:bold>1<\/jats:bold>, further powerful sensor systems should be easily achieved.<\/jats:p>","DOI":"10.1002\/chem.201502736","type":"journal-article","created":{"date-parts":[[2015,8,28]],"date-time":"2015-08-28T11:06:50Z","timestamp":1440760010000},"page":"14297-14300","source":"Crossref","is-referenced-by-count":13,"title":["A Biphasic Mercury\u2010Ion Sensor: Exploiting Microfluidics to Make Simple Anilines Competitive Ligands"],"prefix":"10.1002","volume":"21","author":[{"given":"Martin","family":"Petzoldt","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carsten","family":"Eschenbaum","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S. 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