期刊
CHEMPHYSCHEM
卷 16, 期 18, 页码 3877-3885出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.201500783
关键词
aggregation; cationic porphyrins; ion pairs; spherical aggregates; surfactants
资金
- Association pour la Recherche contre le Cancer, ARC foundation [PDF20101202067]
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 (60-160nm). 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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