Electrochemical metal speciation using self-assembled monolayers.


Mandler D, Gal-Oz R, Burshtain D, Turyan I. Electrochemical metal speciation using self-assembled monolayers. J. Phys. IVJournal de Physique IV: Proceedings. 2003;107 (XIIth International Conference on Heavy Metals in the Environment, 2003, Volume 2) :801 - 804.

Date Published:



The application of self-assembled monolayers (SAMs) as a means of achieving speciation in heavy metal electrochem. detn. is demonstrated. SAMs are monomol. org. layers that can be chem. attached onto different electrode materials and used for the selective extn. of heavy metals. The selectivity is achieved by assembling monolayers that have pendant ligands, which interact selectively with the analytes in the soln. For example, the formation of a monolayer comprising a pyridine group was used to selectively ext. Cr(VI) from aq. solns., whereas the selective detn. of Fe(II) was accomplished using a covalently bound terpyridine monolayer. Yet, detg. the heterogeneous binding consts. of the metallic species by the SAMs is of significant importance and allows studying quant. the interactions between the monolayer and the metal ions. The authors have developed a few methods for detg. the binding consts. of heavy metal ions by SAMs of which two of them are briefly discussed here. [on SciFinder(R)]


CAPLUS AN 2003:554852(Journal)