Premium
Coumarin Grafted Polyethylene Matrix as Colorimetric and Fluorescent Chemosensor for Metal Ions
Author(s) -
Vonlanthen Mireille,
RojasMontoya Sandra M.,
CuétaraGuadarrama Fabián,
MartínezSerrano Ricardo D.,
Burillo Guillermina,
Rivera Ernesto
Publication year - 2020
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.202000242
Subject(s) - fluorescence , chemistry , photochemistry , naked eye , photoinduced electron transfer , quenching (fluorescence) , polyethylene , methanol , metal ions in aqueous solution , coumarin , metal , polymer chemistry , nuclear chemistry , detection limit , electron transfer , organic chemistry , chromatography , physics , quantum mechanics
A coumarin‐based chemosensor is synthesized and grafted onto a polyethylene (PE) surface by means of gamma radiation. The obtained polymeric film results to work as test‐paper‐like colorimetric sensor for the detection of Cu 2+ ions. After immersion of the grafted PE film into a solution of Cu 2+ in chloroform/methanol (8/2), a color change from colorless to green is observed by naked eye together with a quenching of the fluorescence emission. Control experiment with methoxy‐grafted PE films shows no response after the immersion in the same Cu 2+ solution. The polymeric sensor can be washed and reused over several cycles for the detection of Cu 2+ . Moreover, the obtained polymeric sensor is used to detect Zn 2+ by means of photoinduced electron transfer (PET) quenching disrupting mechanism. The fluorescence emission increases about three times after immersion in a solution containing Zn 2+ . A similar behavior is observed in the presence of acidic protons.