| abstract |
The invention relates to a sensor comprising a piezoelectric crystal with a polyarylene thioether-containing coating, the coating containing at least one polyarylene system having repeating units of the formula I, n n n —[(Ar 1 ) n —X] m —[(Ar 2 ) i —Y] j —[(Ar 3 ) k —Z] l —[(Ar 4 ) o —W] p — (I) n n n which contain at least one thioether group, in which n Ar 1 , Ar 2 , Ar 3 and Ar 4 are identical or different aryl systems having from 6 to 18 carbon atoms, n W, X, Y and Z are identical or different linking groups, selected from the group comprising —SO 2 —, —S—, —SO—, —O—, —CO—, —CO 2 —, alkylene or alkylidene having from 1 to 6 carbon atoms and —NR 1 —, where R 1 is an alkyl or alkylide group having from 1 to 6 carbon atoms and at least one linking group must be —S—, n, m, i, j, k, l, o, p are, equal or different, integers zero, 1, 2, 3 or 4, their sum having to be at least 2, and to the use thereof. |