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

Abhijit Chatterjee; Sundaravalli Narayanan; Sachin Thorat; Ajay J. Malik; Madan D. Ambhore; Aswini Narayanan; Anil Kumar Sihag; Sukumaran Santhosh Babu; Mayurika Lahiri; Partha Hazra

doi:10.1039/D4CC05113K

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

Abhijit Chatterjee,‡^a Sundaravalli Narayanan,‡^a Sachin Thorat,^ab Ajay J. Malik,^c Madan D. Ambhore,

^d Aswini Narayanan,^ef Anil Kumar Sihag,^a Sukumaran Santhosh Babu,

^ef Mayurika Lahiri

^c and Partha Hazra

*^a

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* Corresponding authors

^a Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune (411008), Maharashtra, India
E-mail: p.hazra@iiserpune.ac.in

^b Innovation Campus Mumbai, BASF Chemicals India Pvt. Ltd., Plot No. 12, TTC Area, Thane Belapur Road, Turbhe, Navi Mumbai, Maharashtra, India

^c Department of Biology, Indian Institute of Science Education and Research (IISER), Pune (411008), Maharashtra, India

^d Department of Chemistry, Yeshwant Mahavidyalaya Nanded, Nanded, Maharashtra, India

^e Organic Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr Homi Bhabha Road, Pune-411 008, India

^f Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201 002, India

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 ΔE_ST 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.

This article is part of the themed collection: Chemistry for a Sustainable World – Celebrating Our Community Tackling Global Challenges

Chemical Communications

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

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

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