Salt-bridge supported bilayer lipid membrane modified with Calix[n]arenes as alkali cation sensors

Authors
Zhang, YL Shen, HX Liu, Y Zhang, CX Chen, LX
Citation
Yl. Zhang et al., Salt-bridge supported bilayer lipid membrane modified with Calix[n]arenes as alkali cation sensors, ANAL LETTER, 33(5), 2000, pp. 831-845
Citations number
26
Categorie Soggetti
Chemistry & Analysis","Spectroscopy /Instrumentation/Analytical Sciences
Journal title
ANALYTICAL LETTERS
ISSN journal
00032719 → ACNP
Volume
33
Issue
5
Year of publication
2000
Pages
831 - 845
Database
ISI
SICI code
0003-2719(2000)33:5<831:SSBLMM>2.0.ZU;2-G
Abstract
Potentiometric behaviors of a salt-bridge supported bilayer lipid membrane (Sb-BLM) modified with Calix[n]arene (n=4, 6, 8) derivatives are described for some alkali metal ions. The modified Sb-BLM was used as an alkali catio n sensor. The membrane potentials were observed to generate Nernstian respo nses to the concentration of alkali metal ions in electrolyte. The Sb-BLM m odified with the calix[n]arenes show high selectivity for individual alkali metal ions: Calix[8]arenes for K+, calix[6]arenes for Cs+. Calix[4]arenes show no selectivity for any alkali ions. The interacting mechanism is also discussed.