The thiol-ene reaction is a established photoreaction of multifunctional thiols and enes. Virtually any type of ene will
participate in a free radical polymerisation process with a thiol. An advantage over many other photochemical reactions
is that the reaction proceeds almost as rapidly in ambient conditions as in inert atmosphere.
In this work we introduce the UV-crosslinking of polynorbornenes made by ring opening metathesis polymerization
making use of the residual double bond in the polymer backbone.
The crosslinking experiments were done in thin films and were followed by FTIR measurements, to proof the
accessibility of double-bonds in the polymers for the addition of the thiols. As a result of these pre-experiments we
created flexible and light transmitting films. To further increase the scope of this reaction, amphiphilic block copolymers
were prepared and used to form block copolymer micelles in a selective solvent, which were subsequently crosslinked
with pentaerythritol tetra(3-mercaptopropionate) (PETMP). FT-IR, DLS and SEM-measurements were used to prove the
successful crosslinking and thus nanoparticle formation.