Substance has a fluorescent vinyl that's UV reactive in a couple of colors. I don't know exactly what you're looking for but I can tell you from experience that I spent a LOT of time looking for a white vinyl that would fluoresce under UV last year for a night club project and struck out repeatedly. Don't order a roll without testing a sample first, I had several reps from different companies swear to me their stuff would glow and not a single one did. I wound up having to use a photo-base
paper for my project because of the optical brighteners in it. Obviously that's not gonna work for you.