Room‐Temperature Phosphorescence: Hydrogen‐Bonded Two‐Component Ionic Crystals Showing Enhanced Long‐Lived Room‐Temperature Phosphorescence via TADF‐Assisted Förster Resonance Energy Transfer (Adv. Funct. Mater. 4/2019)

In article number 1807599, Dongpeng Yan and Bo Zhou describe the energy transfer that occurs between a thermally activated delayed fluorescent molecule (melamine) and room temperature phosphorescent molecule (isophtalic acid) in their co-crystal, which achieves a highly enhanced photoemission lifetime (2 seconds).