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.
If you can't find a tool you're looking for, please click the link at the top of the page to "Go to old article view". Alternatively, view our Knowledge Base articles for additional help. Your feedback is important to us, so please let us know if you have comments or ideas for improvement.