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Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera
Published on: December 27, 2018
Multifunctional luminogens with synergy of aggregation-induced delayed fluorescence, two-photon absorption and
Abhijit Chatterjee1, Sundaravalli Narayanan1, Sachin Thorat1,2
1Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune (411008), Maharashtra, India. p.hazra@iiserpune.ac.in.
Abstract:
In this study, we investigated the aggregation-induced delayed fluorescence (AIDF) properties of three luminogens - TN, TA, and TP. Our comprehensive theoretical analysis reveals a significant reduction in the ΔEST in their aggregated or solid-state, activating TADF, on a ∼μs time-scale. Additionally, these luminogens demonstrate two-photon excited anti-Stokes photoluminescence emission and improved photocurrent generation, attributed to their strong charge transfer characteristics and longer singlet exciton lifetimes.
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