  Poly(2-oxazoline)s and copoly(2-oxazoline)s reproduce the versatility introduced by the substitution pattern of the repetition units, paving the way for various applications of the derived materials. Benefiting from their susceptibility to microwave-supported cationic ring-opening polymerizations, reaction times for the polymerization are significantly decreased, while the structural properties of the polymers can be well controlled. For the application of poly(2-oxazoline)s as photoresist, chemical functionalities allowing for UV-induced polymeranalogous crosslinking and the fine-tuning of the surface energy play a key role. In order to expand the toolbox of stimuli-responsive crosslinkable copoly(2-oxazoline)s on the one hand and to further develop the strategies for polymeranalogous modifications, norbornenyl- and thiophenyl-substituted 2-oxazoline monomers were synthesized due to the high reactivity of the constrained double bond in thiol-ene click reactions and the possibility to perform Friedel-Crafts reactions, respectively. These monomers can preferably be polymerized using oxazolinium-based macroinitiators, and copolymers of 2-norbornenyl-2-oxazoline can be used in highly reactive photoresists.

Highly reactive poly(2-oxazoline)-based photoresists with tunable properties

248th National Meeting (2014)

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