Cationic porphyrin - anionic surfactant mixtures for the promotion of self-organized 1:4 ion pair in water with strong aggregation properties - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue ChemPhysChem Année : 2015

Cationic porphyrin - anionic surfactant mixtures for the promotion of self-organized 1:4 ion pair in water with strong aggregation properties

Résumé

We performed a systematic study on the spectroscopic and aggregation properties of stoichiometric mixtures (1:4) of the tetracationic meso-tetrakis(4-N-methylpyridinium)porphyrin (H2TMPyP) and three sodium alkylsulfate surfactants (tetradecyl, hexadecyl, and octadecylsulfate) in an aqueous solution. The objective was to build a supramolecular aggregate, which would favor the internalization of tetracationic porphyrins in cells without chemical modification of the structure of the porphyrin. We show that stoichiometric H2TMPyP/alkylsulfate (1:4) mixtures lead to the formation of large hollow spherical aggregates (60–160 nm). The TEM images show that the membrane of these aggregates are composed of smaller aggregates, which are probably rod-like micelles. These rod-like micelles have a hydrophobic core composed of the alkyl chains of the alkylsulfate surfactant, whereas the charged surface corresponds to the tetracationic porphyrins.

Dates et versions

hal-01920327 , version 1 (13-11-2018)

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Vincent Pradines, Christian Bijani, Jean-Luc Stigliani, Muriel Blanzat, Isabelle Rico-Lattes, et al.. Cationic porphyrin - anionic surfactant mixtures for the promotion of self-organized 1:4 ion pair in water with strong aggregation properties. ChemPhysChem, 2015, 16 (18), pp.3877-3885. ⟨10.1002/cphc.201500783⟩. ⟨hal-01920327⟩
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