Cationic Porphyrin-Anionic Surfactant Mixtures for the Promotion of Self-Organized 1:4 Ion Pairs in Water with Strong Aggregation Properties.
Chemphyschem
; 16(18): 3877-85, 2015 Dec 21.
Article
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| MEDLINE
| ID: mdl-26456707
ABSTRACT
We performed a systematic study on the spectroscopic and aggregation properties of stoichiometric mixtures (14) of the tetracationic meso-tetrakis(4-N-methylpyridinium)porphyrin (H2 TMPyP) 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 H2 TMPyP/alkylsulfate (14) mixtures lead to the formation of large hollow spherical aggregates (60-160â
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.
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MEDLINE
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Porfirinas
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Tensoactivos
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En
Año:
2015
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Article