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  • 1
    Electronic Resource
    Electronic Resource
    Ion-selective langmuir blodgett films of a chromoionophore (1995)
    New York, NY [u.a.] : Wiley-Blackwell
    Advanced Materials for Optics and Electronics 5 (1995), S. 137-143 
    Details
    ISSN: 1057-9257
    Keywords: sensor ; Langmuir-Blodgett film ; chromoionophore ; crown ether ; complex formation ; stability constant ; absorbance ; water ; metal cation ; silver ; mercury ; lead ; barium ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: 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.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/amo.860050302
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  • 2
    Electronic Resource
    Electronic Resource
    Langmuir-Blodgett films of a benzothiazolium dye containing a crown ether ring (1994)
    New York, NY [u.a.] : Wiley-Blackwell
    Advanced Materials for Optics and Electronics 4 (1994), S. 225-232 
    Details
    ISSN: 1057-9257
    Keywords: Langmuir-Blodgett film ; Structure ; Chromo-ionophore ; Tricosanoic acid ; Mercury ; Surface plasmon resonance ; Polarised absorption spectroscopy ; Ellipsometry ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: The structure of Langmuir-Blodget (LB) films built up from a novel benzothiazolium steryl dye containing a 1, 10-dithia-18-crown-6 ether group has been investigated using ellipsometry and polarised absorption spectroscopy. The Y-type deposition results in a uniaxial film with a thickness of 2.18 ± 0.08 nm per monolayer and an index of refraction of 1.57 ± 0.03. the chromophore parts of the moelcule exhibit an in-Plane orientation. The influence of mercury vapouron the LB films has been investigated using the technique of surface plasmon resonance.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/amo.860040306
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    Paper (German National Licenses)
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