Science Buddies: "Ask an Expert"

Hi,


I am undergoing an experiment which involves UV beads and how its colour changes with varying temperatures. For this experiment, I am trying to figure out what the exact photochromic chemical is present in the beads, I know some use napthopyran but what are the one's used specifically on the website?

Furthermore, I am attempting to find the activation energy of napthopyran if it is indeed the chemical present in UV beads? I have attempted to search it up online but could not find a value for the Ea. How can I find this value?


Thank you in advance.

Hello. Please only post a single thread in one forum so that our experts can best help you based on what has already been discussed. Refer to your post in the Life and Earth Sciences Forum. Good luck, and thanks for using Science Buddies!