Open AccessMix‐&‐Read Determination of Mercury(II) at Trace Levels with Hybrid Mesoporous Silica Materials Incorporating Fluorescent Probes by a Simple Mix‐&‐Load Technique
Author(s) -
Climent Estela,
Hecht Mandy,
Witthuhn Heike,
Gawlitza Kornelia,
Rurack Knut
Publication year - 2018
Publication title -
chemistryopen
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 29
ISSN - 2191-1363
DOI - 10.1002/open.201800277
Subject(s) - bodipy , detection limit , mercury (programming language) , aqueous solution , mesoporous material , chemistry , fluorescence , trace amounts , mesoporous silica , selectivity , chromatography , organic chemistry , medicine , physics , alternative medicine , quantum mechanics , pathology , computer science , programming language , catalysis
The synthesis, characterization, and application of mesoporous materials containing boron–dipyrromethene (BODIPY) moieties that allow the sensitive and selective detection of Hg II in aqueous environments by fluorescence enhancement is reported. For this purpose, BODIPY dye I containing a thia‐aza crown ether receptor as the fluorescent probe for the detection of Hg II in aqueous environments is encapsulated into mesoporous materials to avoid self‐quenching or aggregation in water. Determination of Hg II is accomplished within a few seconds with high selectivity and sensitivity, reaching a limit of detection of 12 ppt. The determination of trace amounts of Hg II in natural waters and in fish extracts is demonstrated by using our sensing material. The incorporation of the material into several μ‐PAD strips yields a portable, cheap, quick, and easy‐to‐handle tool for trace Hg II analysis in water.