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. 2024 Feb 1;60(11):1408-1411.
doi: 10.1039/d3cc05119f.

Modulation of Δ EST and room temperature phosphorescence in carbazole derivatives

Komal Vasant Barhate  1 , Amey P Wadawale  2 , K R S Chandrakumar  3   4 , Neeraj Agarwal  1
Affiliations

Modulation of Δ EST and room temperature phosphorescence in carbazole derivatives

Komal Vasant Barhate et al. Chem Commun (Camb). .

Abstract

A simple strategy to modulate the singlet-triplet energy gap in 3,6-diaryl-N-acetophenylcarbazole derivatives is developed. Different substituents significantly influenced ΔEST, 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.

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