Fluorine-substituted tetracationic ABAB-phthalocyanines for efficient photodynamic inactivation of Gram-positive and Gram-negative bacteria

Autores/as

Revuelta-Maza, Miguel Á.; González-Jiménez, Patricia; Hally, Cormac; Agut, Montserrat; Nonell, Santi; de la Torre, Gema; Torres, Tomás

Abstract

Herein, we report the synthesis and characterization of new amphiphilic phthalocyanines (Pcs), the study of their singlet oxygen generation capabilities, and biological assays to determine their potential as photosensitizers for photodynamic inactivation of bacteria. In particular, Pcs with an ABAB geometry (where A and B refer to differently substituted isoindole constituents) have been synthesized. These molecules are endowed with bulky bis(trifluoromethylphenyl) groups in two facing isoindoles, which hinder aggregation and favour singlet oxygen generation, and pyridinium or alkylammonium moieties in the other two isoindoles. In particular, two water-soluble Pc derivatives (PS-1 and PS-2) have proved to be efficient in the photoinactivation of S. aureus and E. coli, selected as models of Gram-positive and Gram-negative bacteria.

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Publicación

European Journal of Medicinal Chemistry, 1 February 2020, v.187, 111957

Fecha de publicación

2020-02-01

DOI

https://doi.org/10.1016/j.ejmech.2019.111957