A Biphasic Mercury‐Ion Sensor: Exploiting Microfluidics to Make Simple Anilines Competitive Ligands |
| |
| Authors: | Martin Petzoldt Carsten Eschenbaum S Thimon Schwaebel Kerstin Broedner Prof Dr Uli Lemmer Dr Manuel Hamburger Prof Dr Uwe H F Bunz |
| |
| Affiliation: | 1. Organisch Chemisches Institut and Centre for Advanced Materials (CAM), Ruprecht‐Karls‐Universit?t Heidelberg, Im Neuenheimer Feld 225 and 270, 69120 Heidelberg (Germany);2. InnovationLab GmbH, Speyerer Stra?e 4, 69117 Heidelberg (Germany);3. Lichttechnisches Institut and Institute of Microstructure Technology, Karlsruhe Institute of Technology, Engesserstr. 13, 76131 Karlsruhe (Germany) |
| |
| Abstract: | Combining the molecular wire effect with a biphasic sensing approach (analyte in water, sensor‐dye in 2‐methyltetrahydrofuran) and a microfluidic flow setup leads to the construction of a mercury‐sensitive module. We so instantaneously detect Hg2+ ions in water at a 500 μM concentration. The sensor, conjugated non‐water soluble polymer 1 (XFPF), merely supports dibutylaniline substituents as binding units. Yet, selective and sensitive detection of Hg2+‐ions is achieved in water. The enhancement in sensory response, when comparing the reference compound 2 to that of 1 in a biphasic system in a microfluidic chip is >103. By manipulation of the structure of 1 , further powerful sensor systems should be easily achieved. |
| |
| Keywords: | 2‐methyltetrahydrofuran biphasic mercury microfluidic device sensors |
|
|
