| abstract |
There is the preparation of 7-n-alkyl-imidazolium [4,5-d] pyrimidines. 6-substituted 3-n-alkyl-benzimidazolium - and 3-n-alkyl-5,6-substituted-benzthiazolium salts. These N-surfactants with a substituted heterocycle as the head group are characterized by a small micelle formation concentration (KMK) of 10 -5 -10 -7 mol / liter. The size and shape of the micelles of these N + surfactants can be determined by that of the anions. The N + surfactants can be used both as active pharmaceutical ingredients and as fluorescent markers in immunological test procedures. |