SYNTHESIS OF CHLOROMETHYLATED POLYSTYRENES BEARING NEW TETRATHIAFULVALENYLCARBONYLOXYMETHYL GROUPS

In order to conserve high contrast while improving the sensitivity of microlithographic resins made up of polystyrene bearing tetrathiafulvalene (TTF) units, we prepared new polystyrenes containing tetrathiafulvalenylcarbonyloxymethyl groups which are methylated or non-methylated. The polymers were synthesized by reaction of poly[styrene-co-(p-chloromethylstyrene)] with the corresponding caesium tetrathiafulvalenecarboxylate. To optimize this grafting reaction, preliminary reactions were carried out with model molecules.