Department of Photochemistry, Institute of Chemical Physics, Russian Academy of Sciences, Chemogolovka, Moscow Region, 142432, Russia.
Ion-selective langmuir blodgett films of a chromoionophore
Article first published online: 14 SEP 2004
Copyright © 1995 John Wiley & Sons Ltd.
Advanced Materials for Optics and Electronics
Volume 5, Issue 3, pages 137–143, May/June 1995
How to Cite
Lednev, I. K. and Petty, M. C. (1995), Ion-selective langmuir blodgett films of a chromoionophore. Adv. Mater. Opt. Electron., 5: 137–143. doi: 10.1002/amo.860050302
- Issue published online: 14 SEP 2004
- Article first published online: 14 SEP 2004
- Manuscript Accepted: 27 OCT 1994
- Manuscript Received: 24 AUG 1994
- Langmuir–Blodgett film;
- crown ether;
- complex formation;
- stability constant;
- metal cation;
Langmuir–Blodgett films built up from an amphiphilic derivative of benzothiazolium styryl dye containing a 1,10-dithia-18-crown-6 ether group have been found to complex with ‘soft’ polarisable ions such as Ag+ and Hg2+ in water. The films exhibited high sensitivity (stability constant of complex formation K ≈ 105 M−1) and high selectivity (e.g. K(Ag+)/K(Pb2+)> 105) compared with aqueous solutions of similar ionophores. This was attributed to the predominant formation of complexes with ligand–cation stoichiometries of 2:1 in the films.