RT Journal Article
T1 Globular Aggregates Stemming from the Self-Assembly of an Amphiphilic N-Annulated Perylene Bisimide in Aqueous Media
A1 Martínez, Manuel A.
A1 Greciano Raiskila, Elisa E.
A1 Cuéllar, Jorge
A1 Valpuesta, José M.
A1 Sánchez Martín, Luis
AB Herein, we describe the synthesis of highly emissive amphiphilic N-annulated PBI 1 decorated with oligo ethylene glycol (OEG) side chains. These polar side chains allow the straightforward solubility of 1 in solvents of different polarity such as water, iPrOH, dioxane, or chloroform. Compound 1 self-assembles in aqueous media by π-stacking of the aromatic units and van der Waals interactions, favored by the hydrophobic effect. The hypo- and hypsochromic effect observed in the UV-Vis spectra of 1 in water in comparison to chloroform is diagnostic of H-type aggregation. Solvent denaturation experiments allow deriving the free Gibbs energy for the self-assembly process in aqueous media and the factor m that is indicative of the influence exerted by a good solvent in the stability of the final aggregates. The ability of compound 1 to self-assemble in water yields globular aggregates that have been visualized by TEM imaging.
PB MDPI
SN 2079-4991
YR 2021
FD 2021
LK https://hdl.handle.net/20.500.14352/7477
UL https://hdl.handle.net/20.500.14352/7477
LA eng
NO MCIU
NO Comunidad de Madrid
DS Docta Complutense
RD 23 abr 2025