Polymorph-Dependent Luminescence Response to Acid Vapors and Its Application in Safety Protection of File Information

• Published in: ACS applied materials & interfaces Vol. 11; no. 37; pp. 34526 - 34531
• Main Authors: Liu, Huapeng, Lu, Zhuoqun, Ye, Kaiqi, Zhang, Zuolun, Zhang, Hongyu
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 18.09.2019
• Subjects: acid sensing; luminescence; information protection; crystal; polymorphs

A Schiff base, (E)-1-(phenylimino)­methyl-2-hydroxylnaphthalene (PIHN), was found to form both nonluminescent and luminescent polymorphs. A unique luminescence “turn on” behavior was observed when the nonluminescent polymorph was fumed with the vapor of aliphatic acids with two or three carbons in t...