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A Viable Route for Lithium Ion Detection
Author(s) -
Gulino Antonino,
Lupo Fabio,
Cristaldi Domenico A.,
Pappalardo Sebastiano,
Capici Calogero,
Gattuso Giuseppe,
Notti Anna,
Parisi Melchiorre F.
Publication year - 2014
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201301213
Subject(s) - chemistry , monolayer , chromogenic , ionophore , x ray photoelectron spectroscopy , lithium (medication) , covalent bond , molecule , ion , inorganic chemistry , spectroscopy , yield (engineering) , combinatorial chemistry , photochemistry , organic chemistry , chemical engineering , chromatography , calcium , medicine , biochemistry , physics , materials science , quantum mechanics , engineering , metallurgy , endocrinology
Quartz substrates were first functionalized with 4‐ClCH 2 C 6 H 4 SiCl 3 and then allowed to react with 5‐(4′‐pyridylazo)‐25,26,27‐tris(ethoxycarbonylmethoxy)‐28‐hydroxycalix[4]arene in a covalent fashion to yield a hybrid material with an immobilized monolayer of a chromogenic sensing agent. The structural characterization of this ionophore monolayer on silica surfaces was performed by X‐ray photoelectron spectroscopy. This technique was also used together with UV/Vis spectroscopy to investigate the ionophoric properties of the monolayer, which was found to reversibly recognize and bind lithium ions at ppm levels even in the presence (in a comparable concentration) of highly competitive cations such as Na + . Overall, our procedure shows that a single‐molecule property can be successfully transferred to a solid‐state device.
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