Premium
Off‐On Fluorescence Response of a Cysteine–based Perylene Diimide for Mercury Detection in Water
Author(s) -
Grisci Giorgio,
Mróz Wojciech,
Catellani Marinella,
Kozma Erika,
Galeotti Francesco
Publication year - 2016
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201600614
Subject(s) - diimide , perylene , mercury (programming language) , detection limit , chemistry , aqueous solution , fluorescence , metal ions in aqueous solution , cysteine , ion , photochemistry , molecule , stoichiometry , inorganic chemistry , organic chemistry , chromatography , physics , enzyme , computer science , programming language , quantum mechanics
The development of simple, low‐cost and selective methods for quantitative detection of mercury ions in aqueous media is still a challenge. Herein, we employ a cysteine based perylene diimide (PDI‐Cys) as sensing probe for Hg 2+ ions in water. The probe selectively detects the mercury ions in 100 % aqueous solution by a fluorescence turn‐on response. The binding stoichiometry reveals a 1:2 complexation of PDI‐Cys/Hg 2+ , in which two Hg 2+ ions are bound to one PDI‐Cys molecule. The detection limit is as low as 20 ppb, close to the sensitivity requirement for drinking water, indicating the potentiality of PDI‐based probes for mercury analysis in both environmental and biological field.