[Reddart]

The thiol-ene reaction. I have used it successfully for the last 3 companies I've worked at, and if the desired properties are met of my latest batch of compounds, my current company as well.

Yup, this is really a versatile reaction, which can be used for crosslinking/polymerization. My colleagues for postdocs use this reaction a lot.

By the way, I think thiol-ene reaction is effected by AIBN or photoinitiator, right? Any other possible choice?

Yes, some kind of radical generator. I have mostly used AIBN thermal initiation, but some use photo-initiators successfully. Supposedly, you can just use UV light alone at the appropriate wavelength and intensity to initiate, but I have never tried that.

[wildfyr]

Yes, plain UV works excellently. Its not exactly a stable mixture as it is. If you leave them in the dark then autopolymerization will occur between primary thiols and alkenes.