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. 2025 Jan 16;61(7):1447-1450.
doi: 10.1039/d4cc05113k.

Multifunctional luminogens with synergy of aggregation-induced delayed fluorescence, two-photon absorption and photocurrent generation

Abhijit Chatterjee  1 , Sundaravalli Narayanan  1 , Sachin Thorat  1   2 , Ajay J Malik  3 , Madan D Ambhore  4 , Aswini Narayanan  5   6 , Anil Kumar Sihag  1 , Sukumaran Santhosh Babu  5   6 , Mayurika Lahiri  3 , Partha Hazra  1
Affiliations

Multifunctional luminogens with synergy of aggregation-induced delayed fluorescence, two-photon absorption and photocurrent generation

Abhijit Chatterjee et al. Chem Commun (Camb). .

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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