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KMID : 1024520200290080801
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Journal of the Environmental Sciences
2020 Volume.29 No. 8 p.801 ~ p.808
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Self-assembled Micelle-based Fluorescence Sensor for Extremely Acidic pH Range
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Lee Jeong-Moo
Lee Seoung-Ho
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Abstract
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In this study, an effective fluorescence pH sensor based on conjugated polyelectrolyte micelles (CPMs) was devised for detecting extremely acidic conditions. An amphiphilic coumarin derivative (CC12-N), a building block, was prepared, into which an ionizable amino group, aryl amine, was incorporated as a potential hydrophilic moiety. This monomer displays self-assembled micelle formation in extremely acidic pH ranges, giving a hydrophobic π-extended conjugated system at the inner part and hydrophilic functionality at the periphery, resulting in efficient fluorescence intensity enhancement. This new micelle-based fluorescence provides an efficient sensing platform for detecting very low pH values in the presence of competing substances.
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KEYWORD
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pH Sensors, Micelles, Self-assembly
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