Aggregation-assisted energy gap modulation controls delayed emission in hybrid charge-transfer emitters

Chem. Sci., 2025, Advance Article DOI: 10.1039/D5SC02071A, Edge Article Kavya Vinod, Najuma Noushad, Hidetoshi Tanaka, Nitha Mohan, Yuya Kokado, Daiki Tomiya, Yasuhiro Kobori, Mahesh Hariharan Aggregation modulates the singlet–triplet energy gap in a hybrid charge-transfer emitter and its brominated analogue, tuning the balance between delayed fluorescence and room temperature phosphorescence through J- and H-aggregation, respectively.