Zusammenfassung:
<jats:title>Abstract</jats:title>
<jats:p>Alkylammonium benzene-, pyridine-3-, p-toluene-, and p-ethylbenzenesulfonates were found to be smectogenic when the cation carries an octyl or longer alkyl group. The thermal stability of the mesophase usually reaches its maximum at the octadecylammonium salt. The temperature range of stable existence is in the following order: pyridine-3-sulfonate&gt;p-toluenesulfonate&gt;benzenesulfonate&gt;p-ethylbenzenesulfonate, suggesting the presence of a specific interaction between the ammonium ion and the nitrogen atom in the pyridine ring.</jats:p>
Beschreibung:
<jats:title>Abstract</jats:title>
<jats:p>Alkylammonium benzene-, pyridine-3-, p-toluene-, and p-ethylbenzenesulfonates were found to be smectogenic when the cation carries an octyl or longer alkyl group. The thermal stability of the mesophase usually reaches its maximum at the octadecylammonium salt. The temperature range of stable existence is in the following order: pyridine-3-sulfonate&gt;p-toluenesulfonate&gt;benzenesulfonate&gt;p-ethylbenzenesulfonate, suggesting the presence of a specific interaction between the ammonium ion and the nitrogen atom in the pyridine ring.</jats:p>