Coumarin Grafted Polyethylene Matrix as Colorimetric and Fluorescent Chemosensor for Metal Ions was written by Vonlanthen, Mireille;Rojas-Montoya, Sandra M.;Cuetara-Guadarrama, Fabian;Martinez-Serrano, Ricardo D.;Burillo, Guillermina;Rivera, Ernesto. And the article was included in Macromolecular Chemistry and Physics in 2020.Category: chlorides-buliding-blocks The following contents are mentioned in the article:
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 Cu2+ ions. After immersion of the grafted PE film into a solution of Cu2+ 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 Cu2+ solution The polymeric sensor can be washed and reused over several cycles for the detection of Cu2+. Moreover, the obtained polymeric sensor is used to detect Zn2+ by means of photoinduced electron transfer (PET) quenching disrupting mechanism. The fluorescence emission increases about three times after immersion in a solution containing Zn2+. A similar behavior is observed in the presence of acidic protons. This study involved multiple reactions and reactants, such as Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3Category: chlorides-buliding-blocks).
Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.Category: chlorides-buliding-blocks
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics