Synergetic enhancement of room-temperature phosphorescence via water molecules as a hydrogen bonding bridge

Abstract

Amorphous room-temperature phosphorescent (RTP) materials based on the copolymerization strategy have been widely recognized for their high efficiency, low cost and ease of preparation. However, the RTP efficiency of polyacrylamide copolymers is severely affected by water and oxygen. A further treatment is needed to stabilize the RTP properties of copolymer materials. This study introduces a facile secondary processing strategy using water molecules as a hydrogen bridge to synergetically suppress the non-radiative transition of triplet excitons. Both the RTP lifetime and quantum yield are stabilized and significantly improved, which expands the application field of polyacrylamide copolymer RTP materials.