Metal ion sensing using ultrathin organic films prepared by the layer-by-layer adsorption technique

Authors
Pearson, C Nagel, J Petty, MC
Citation
C. Pearson et al., Metal ion sensing using ultrathin organic films prepared by the layer-by-layer adsorption technique, J PHYS D, 34(3), 2001, pp. 285-291
Citations number
12
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF PHYSICS D-APPLIED PHYSICS
ISSN journal
00223727 → ACNP
Volume
34
Issue
3
Year of publication
2001
Pages
285 - 291
Database
ISI
SICI code
0022-3727(20010207)34:3<285:MISUUO>2.0.ZU;2-N
Abstract
Bilayer films of poly(ethyleneimine) and poly(ethylene-co-maleic acid) have been prepared using the layer-by-layer assembly technique. These films hav e been characterized using surface plasmon resonance (SPR). Exposure to aqu eous solutions of metal acetate (metal = copper, nickel) resulted in a shif t in the position of the SPR curve. This shift could be monitored by observ ing the intensity of the reflected laser beam at fixed angle and concentrat ions of copper acetate down to at least 10(-6) M could be detected.