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Unveiling polymerization mechanism in pH-regulated supramolecular fibers in aqueous media

Abstract: An amine functionalized C3-symmetric benzotrithiophene (BTT) monomer has been designed and synthetized in order to form pH responsive one-dimensional supramolecular polymers in aqueous media. While most of the reported studies looked at the effect of pH on the size of the aggregates, herein, a detailed mechanistic study is reported, carried out upon modifying the pH to trigger the formation of positively charged ammonium groups. A dramatic and reversible change in the polymerization mechanism and size of the supramolecular fibers is observed and ascribed to the combination of Coulombic repulsive forces and higher monomer solubility. Furthermore, the induced frustrated growth of the fibers is further employed to finely control the one-dimensional supramolecular polymerisation and copolymerization processes.

 Autoría: Casellas N.M., Albertazzi L., Pujals S., Torres T., García-Iglesias M.,

 Fuente: Chemistry - A European Journal, 2021, 27(43), 11056-11060

Editorial: Wiley-VCH Verlag

 Fecha de publicación: 02/08/2021

Nº de páginas: 5

Tipo de publicación: Artículo de Revista

 DOI: 10.1002/chem.202101660

ISSN: 0947-6539,1521-3765

Proyecto español: CTQ2017-85393-P

Url de la publicación: https://doi.org/10.1002/chem.202101660

Autores/as

MUÑOZ CASELLAS, NICOLÁS

ALBERTAZZI, LORENZO

PUJALS RIATÓS, SILVIA

TORRES CEBADA, TOMÁS