Enhanced Thermal Stability of Perfumes

Similar packing patterns were observed in the other six crystals (XXVI-XXXII), since all the complex crystals are isostructural. The structures are substantially the same as that of XXVI except for the differences in the lengths of the alkyl chains of the surfactant molecules. 

In summary, complex formation of the chosen perfumes with surfactants decreases the volatilization rate of the perfume and the rate can be controlled by the length of the alkyl group of the surfactant. 

Complex formation between surfactants and aromatic compounds revealed two important characteristics one is an enhancement of the solubility of insoluble drugs in water the other is an improvement in thermal stability of unstable aromatic compounds. Such characteristics will surely be useful for pharmaceutical and industrial chemistries. The improved characteristics of aromatic compounds obtained by the complex formation with the surfactants were registered as a patent at the Japanese Patent Office (Patent No. 3900237). 

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