[lbman]

I'm building an ISE as an honors program project for my general chemistry class. I need to impregnate a thin slit of PVC with macrocyclic antibiotic valinomycin. I have no idea how to do so. Any help in the comments or some links with information (I tried looking, couldn't find anything on it, but i don't really know where to look) would be much appreciated. Thank you very much

[Arkcon]

Hmmm ... tricky.  OK, what is your application:  do you intend to make some sort of bacteriocidal plastic surface, or are you trying to create a thin film to work as some sort of ion gateway?  It might help with your search.

[lbman]

Thin film for ion gateway. Its for a potassium ion selective electrode.

[Arkcon]

Thin film for ion gateway. Its for a potassium ion selective electrode.

Awesome.  You're making one of these:  http://en.wikipedia.org/wiki/Potassium_selective_electrode  Check out the reference on that page, it contains further references to the membranes themselves, and how they're made.  Pretty exciting, I would have expected the exothermic polymerization of PVC would damage the biomolecule.  They must have worked it out somehow.