TITLE

Electrochemical anion sensing using electrodes chemically modified with Au(I)—Cu(I) heterotrimetallic alkynyl cluster complexes containing ferrocenyl groups

AUTHOR(S)
Doménech, Antonio; Koshevoy, Igor O.; Montoya, Noemí; Pakkanen, Tapani A.
PUB. DATE
July 2010
SOURCE
Analytical & Bioanalytical Chemistry;Jul2010, Vol. 397 Issue 5, p2013
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A novel family of electrochemical anion sensors operating in aqueous media, based on the heterometallic Au(I)–Cu(I) [{Au3Cu2(C2R)6}Au3(PPh2C6H4PPh2)3](PF6)2 ( L1, R = Fc; L2, R = C6H4Fc) alkynyl cluster complexes, is presented. Upon attachment to graphite and gold electrodes, these compounds exhibit a well-defined, essentially reversible, solid-state electrochemistry in contact with aqueous media, based on ferrocenyl-centered oxidation processes involving anion insertion, leading to distinctive pH-independent electrochemical responses for fluoride, chloride, bromide, perchlorate, bicarbonate, carbonate, phosphate, hydrogen phosphate, dihydrogen phosphate, and nitrate anions. Cluster-modified electrodes can be used as potentiometric sensors as a result of the reversible, diffusion-controlled electrochemistry obtained for the anion-assisted electrochemical oxidation of L1 and L2.
ACCESSION #
51411086

 

Related Articles

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics