토토사이트: What No One Is Talking About
https://www.evernote.com/shard/s571/sh/8020e8a3-6cf9-4228-a2e2-7dfb045e547a/2dbc19657b429b176668701588c533df
The paper is impregnated using a strong-state combination of the dye and an appropriate matrix; a combination of a fluoran leuco dye and an octadecylphosphonic acid is an example.