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Updated: Apr 4, 2026

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Published on: February 7, 2017
Aggregation Processes of Perylene Bisimide Diimidazolium Salts
Francesca D'Anna1, Salvatore Marullo2, Giuseppe Lazzara3
1Dipartimento STEBICEF-Sezione di Chimica, Università degli Studi di Palermo, Viale delle Scienze, Parco d'Orleans II, 90128 Palermo (Italy). francesca.danna@unipa.it.
Abstract:
The supramolecular aggregation of three diimidazolium-functionalized perylene bisimides, differing in the alkyl chain length was investigated. These salts form aggregates in solvents like chloroform, dichloromethane, and glycerol. Solvent-, concentration-, and temperature-dependent spectroscopic studies were carried out, evidencing the occurrence of an isodesmic, enthalpy-driven aggregation process, underpinned by π-π stacking and hydrogen bonding. Moreover, dynamic light scattering (DLS) measurements and SEM images revealed that these salts aggregate in chloroform into elongated structures.
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