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Synthesis and characterization of metallo‐supramolecular micelles
Author(s) -
Gohy JeanFrançois,
Lohmeijer Bas GG,
Décamps Brigitte,
Leroy Eric,
Boileau Sylvie,
van den Broek Jacomina A,
Schubert Dieter,
Haase Winfried,
Schubert Ulrich S
Publication year - 2003
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.1348
Subject(s) - micelle , supramolecular chemistry , dynamic light scattering , copolymer , ethylene oxide , amphiphile , polymer chemistry , materials science , polyelectrolyte , self assembly , ionic bonding , chemical engineering , aqueous solution , chemistry , organic chemistry , nanotechnology , nanoparticle , ion , molecule , polymer , engineering
Two different metallo‐supramolecular amphiphilic block copolymers have been synthesized, using a hydrophilic poly(ethylene oxide) block connected through a bis‐(2,2′:6′2″‐terpyridine–ruthenium) complex either to a hydrophobic polystyrene or to a poly(ethylene‐ co ‐butylene) block. These copolymers were used to prepare aqueous micelles. The morphological characterization of the metallo‐supramolecular micelles was performed by dynamic light scattering and transmission electron microscopy. Besides individual micelles, larger structures were also observed by these two independent techniques. The larger structures were the result of aggregation of individual micelles. In addition, the influence of the ionic strength of the medium was investigated. Although the metallo‐supramolecular copolymers do not contain charged blocks, the corresponding micelles behaved as polyelectrolyte‐like micelles. This behaviour was attributed to the presence of NaCl ions, strongly associated to the poly(ethylene oxide) blocks. This was evidenced by transmission electron microscopy, that revealed the presence of the salt in the metallo‐supramolecular micelles. Copyright © 2003 Society of Chemical Industry