In: Macromolecules, 2011, vol. 44, no. 12, p. 4569–4573
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In: Macromolecules, 2010, vol. 43, no. 10, p. 4752–4760
We study the self-assembly of a dendritic macromolecular system formed by a second-generation dendron with pH-responsive end groups and with a polymer chain emanating from its focal point, typically referred to as dendron-coil system. We use supramolecular ionic interactions to attach to the periphery of the dendrons sulfate-terminated alkyl tails of various lengths. The resulting ionic complexes...
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In: Macromolecules, 2009, vol. 41, no. 21, p. 8130–8137
We report on the dependence of proton conductivity on the morphologies of sulfonated polystyrene−poly(methyl methacrylate) (sPS−PMMA) diblock copolymers. Three different diblock copolymers of varying molecular weight and block volume fraction were studied, and for each one several sulfonation degrees of the PS block were considered. The investigation of the morphologies of the...
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In: Macromolecules, 2009, vol. 41, no. 22, p. 8759–8769
New rod−coil diblock and coil−rod−coil triblock copolymers containing conjugated poly[2,7-(9,9-dihexylfluorene)] (PF) and coil-like poly(2-vinylpyridine) (P2VP) were synthesized by combining coupling reaction and living anionic polymerization. Scanning force microscopy (SFM), transmission electron microscopy (TEM), cryo-transmission electron microscopy (cryoTEM), and dynamic light...
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In: Soft Matter, 2009, vol. 5, p. 92-97
A new "inverted" topological configuration is demonstrated both experimentally and theoretically for self-assembled dendron and dendrimer-based supramolecular liquid crystals in which the dendrons/dendrimers occupy the continuous domain and the ionically attached pendant chains are confined in discrete domains. All previous studies on dendrimer and dendron-based liquid crystals have reported...
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In: Macromolecular Symposia, 2008, vol. 270, no. 1, p. 58 - 64
We describe how cationic dendronized polymers of generations 1, and 2 and anionic monoalkyl tails can be combined by supramolecular ionic complexation into comb-like liquid crystalline polymers. The final structures in bulk of these supramolecular complexes were studied by differential scanning calorimetry (DSC), cross-polarized optical microscopy (CPOM), small angle x-rays scattering (SAXS) and...
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In: Macromolecules, 2007, vol. 40, no. 19, p. 6990 -6997
We describe the synthesis, the morphology, and self-assembly behavior of semiconducting poly(4-vinylpyridine-b-diethylhexyloxy-p-phenylenevinylene) (P4VP-b-PPV) rod-coil block copolymer systems. Three different block copolymers with 55%, 80%, and 88% coil volume fraction were synthesized by convergent anionic polymerization in THF using lithium α-methylstyrene as initiator....
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In: Macromolecules, 2007, vol. 40, no. 21, p. 7609 -7616
The present work describes the molecular structure and the topology in real space of self-assembled comblike liquid crystalline polymers based on supramolecular ionic complexation of dendronized polymers and lipids. The molecular organization was studied as a function of the generation of the dendronized polymers and the length of the lipid tails, both parameters being known to strongly influence...
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In: Macromolecules, 2007, vol. 40, no. 16, p. 5827 -5834
This work describes the synthesis of temperature-responsive polystyrene-block-poly(N-isopropylacrylamide)-block-polystyrene triblock copolymers, i.e., PS-b-PNIPAM-b-PS, their self-assembly and phase behavior in bulk, and demonstration of aqueous thermoresponsive membranes. A series of PS-b-PNIPAM-b-PS triblock copolymers were synthesized using...
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In: Chemistry of Materials, 2007, vol. 19, no. 13, p. 3093 -3095
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