Modulation of Δ E ST and room temperature phosphorescence in carbazole derivatives.

Komal Vasant BarhateAmey P WadawaleK R S Chandrakumar Neeraj Agarwal

Published in: Chemical communications (Cambridge, England) (2024)

A simple strategy to modulate the singlet-triplet energy gap in 3,6-diaryl- N -acetophenylcarbazole derivatives is developed. Different substituents significantly influenced Δ E ST , which is correlated for the first time with the singlet-triplet state dipole moments. Phosphorescence at ambient conditions in powder form ( τ is up to 248 μs) and ultra long lifetime (up to 2.2 s) at 77 K is observed.

Keyphrases

room temperature
energy transfer
ionic liquid
air pollution
particulate matter
structure activity relationship
quantum dots
high resolution