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http://dx.doi.org/10.5322/JESI.2020.29.8.801

Self-assembled Micelle-based Fluorescence Sensor for Extremely Acidic pH Range  

Lee, Jeongmoo (Department of Chemistry, Daegu University)
Lee, Seoung Ho (Department of Chemistry, Daegu University)
Publication Information
Journal of Environmental Science International / v.29, no.8, 2020 , pp. 801-808 More about this Journal
Abstract
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.
Keywords
pH Sensors; Micelles; Self-assembly;
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