A silver metal complex as a luminescent probe for enzymatic sensing of glucose in blood plasma and urine.
DALTON TRANSACTIONS(2018)
Abstract
In this work, we present a facile preparation of a paper-based glucose assay for rapid, sensitive, and quantitative measurement of glucose in blood plasma and urine. Two copper phosphorescent complexes [Cu(2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline)(2,6-dimethylphenylisocyanide)(2)][B(C6H3(CF3)(2))(4)] (Cu1) and [Cu(2,9-dimethyl-1,10-phenanthroline)(2,6-dimethylphenylisocyanide)(2)][B(C6H3(CF3)(2))(4)] (Cu2) and a new silver congener [Ag(P-3)CNAg(P-3)][B(C6H3(CF3)(2))(4)] (Ag3) (P-3 = PPh2C6H4-PPh-C6H4PPh2 [bis(o-diphenylphosphinophenyl)phenylphosphine]) have been synthesized and their oxygen sensing abilities were investigated. The dimetallic phosphine-based Ag3 complex, having a high oxygen sensing ability, was employed as an efficient signal transducer in enzymatic reactions to recognize blood plasma glucose and urine glucose, which provided a wide linear response for a concentration range between 1.0 and 35 mM and a rapid response, with a limit of detection (LOD) of 0.09 mM for glucose. In practical application, this Ag3 paper-based device offers great analytical reliability and accuracy upon monitoring glucose concentrations in blood plasma.
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Key words
luminescent probe,enzymatic sensing,glucose,silver metal complex,urine
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