MOLECULAR RECOGNITION OF ALKALI-METAL CATIONS BY A NICKEL HEXACYANOFERRATE MONOLAYER ANCHORED TO SELF-ASSEMBLED MONOLAYERS OF 3,3'-THIODIPROPIONIC ACID ON GOLD

Authors
BHARATHI S YEGNARAMAN V RAO GP
Citation
S. Bharathi et al., MOLECULAR RECOGNITION OF ALKALI-METAL CATIONS BY A NICKEL HEXACYANOFERRATE MONOLAYER ANCHORED TO SELF-ASSEMBLED MONOLAYERS OF 3,3'-THIODIPROPIONIC ACID ON GOLD, Langmuir, 11(2), 1995, pp. 666-668
Citations number
33
Categorie Soggetti
Chemistry Physical
Journal title
Langmuir → ACNP
ISSN journal
07437463
Volume
11
Issue
2
Year of publication
1995
Pages
666 - 668
Database
ISI
SICI code
0743-7463(1995)11:2<666:MROACB>2.0.ZU;2-S
Abstract
A gold electrode surface has been modified with a monolayer of 3,3'-th iodipropionic acid (TPA) by self-assembly. The pH-sensitive TPA monola yer is further derivatized to form a monolayer of nickel hexacyanoferr ate. This electrode shows molecular discrimination between potassium a nd sodium ions and exhibits a near-Nernstian response, with a slope of 55 mV/decade to potassium ions in the range from 10(-2) to 1 M.