[jefinjo]

I recently started working on thin films and I am about to synthesize one. Plan is to make a Rose bengal dyed PVA solution and spin coat that on glass. My aim is to just learn how to make them. If it turns out good, I am planning to a UV absorption analysis too. But, I don't know how much chemicals should I add to make the solution. Can anyone help? Or, is there any other suggestions to start with?
Thanks.