Diacetylene, complex salts

Table 7. List of complex salts of diacetylene amphiphiles... 

Besides the layer perovskite halide salts further complex salts of unknown structure have been reported. Snce they all are formed by amphiphilic diacetylenes, it may be inferred that they exhibit a bilayer type arrangement as well. The complex salts are listed in Table 7.2. 

Terminal alkenes containing hydrogen linked to the triple bond undergo oxidative coupling to diacetylenes by cupric salts [5cuprous salts [59, 66] (equation 139). Copper salts are solubilized by complexing with tertiary amines, most frequently pyridine [59, 357] and tetramethylethylenediamine [66]. The coupling can also be carried out with cuprous salts of acetylenes [5 S]. 

Recently, the Langmuir-Blodgett (LB) technique has been recognized as a useful way of tailoring thin films of molecular thickness. Interest in the LB technique has led to a number of investigations of different types of materials. For example, the classic long-chain fatty acids and alcohols as well as polymerizable molecules, e.g. diacetylenic acids [211-213], aromatic hydrocarbons, e.g. substituted anthracenes [214, 215], TCNQ radical anion salts [216, 217] and charge transfer complexes [218-220] and dye substances can now all be produced as monomolecular layers. 

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