Tuning the fate of the triplet by changing the degree of branching in phenothiazine–trithienyltriazine nanoaggregates

Pietro Mancini; Chiara Montanari; Penelope Venturi; Kusum Yadav; Tommaso Bianconi; Eleonora Calzoni; Alessio Cesaretti; Rajneesh Misra; Benedetta Carlotti

doi:10.1039/D5CC05041C

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Tuning the fate of the triplet by changing the degree of branching in phenothiazine–trithienyltriazine nanoaggregates

Pietro Mancini,^a Chiara Montanari,^a Penelope Venturi,^a Kusum Yadav,^b Tommaso Bianconi,^cd Eleonora Calzoni,

^a Alessio Cesaretti,

^a Rajneesh Misra

*^b and Benedetta Carlotti

*^a

Author affiliations

* Corresponding authors

^a Department of Chemistry, Biology and Biotechnology and CEMIN, University of Perugia, via Elce di sotto 8, 06123 Perugia, Italy
E-mail: benedetta.carlotti@unipg.it

^b Department of Chemistry, Indian Institute of Technology, Indore 453552, India
E-mail: rajneeshmisra@iiti.ac.in

^c Department of Chemistry, University of Wisconsin-Madison, University Ave 1101, 53706 Madison (WI), USA

^d Department of Physics, Politecnico di Milano, Piazza Leonardo da Vinci 32, Milan 20133, Italy

Abstract

Nanoaggregates of phenothiazine–trithienyltriazine compounds with a different degree of branching (TRZ1–3) were investigated in a water dispersion with time-resolved spectroscopy. Room temperature phosphorescence was highlighted for TRZ1, reactive oxygen species production for TRZ2, and red thermally activated delayed fluorescence for TRZ3. These aggregation induced emission materials hold great potential for imaging-guided photodynamic therapy.

This article is part of the themed collection: Aggregation-Induced Emission

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DOI: https://doi.org/10.1039/D5CC05041C
Article type: Communication
Submitted: 01 Sep 2025
Accepted: 11 Nov 2025
First published: 11 Nov 2025

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Chem. Commun., 2025, Advance Article

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Tuning the fate of the triplet by changing the degree of branching in phenothiazine–trithienyltriazine nanoaggregates

P. Mancini, C. Montanari, P. Venturi, K. Yadav, T. Bianconi, E. Calzoni, A. Cesaretti, R. Misra and B. Carlotti, Chem. Commun., 2025, Advance Article , DOI: 10.1039/D5CC05041C

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Tuning the fate of the triplet by changing the degree of branching in phenothiazine–trithienyltriazine nanoaggregates

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Tuning the fate of the triplet by changing the degree of branching in phenothiazine–trithienyltriazine nanoaggregates

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