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- W2079402885 endingPage "2054" @default.
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- W2079402885 abstract "A well-defined ABC triblock copolymer, poly(2-(2-methoxyethoxy)ethyl methacrylate)-b-poly(2-(dimethylamino)ethyl methacrylate)-b-poly(2-(diethylamino)ethyl methacrylate) (PMEO2MA-b-PDMA-b-PDEA), was synthesized via sequential atom transfer radical polymerization using ethyl 2-bromoisobutyrate as the initiator. Reacting the triblock precursor with propargyl bromide in anhydrous tetrahydrofuran yielded PMEO2MA-b-P(DMA-co-QDMA)-b-PDEA triblock copolymer with clickable moieties, where QDMA was quaternized DMA residues. PMEO2MA-b-P(DMA-co-QDMA)-b-PDEA triblock copolymer exhibited schizophrenic micellization behavior in aqueous solution, forming three-layer onion-like PMEO2MA-core and PDEA-core micelles upon proper adjustment of the solution pH and temperature. For temperature-induced formation of PMEO2MA-core micelles at acidic pH, the critical micellization temperature can be tuned by incorporating oligo(ethylene glycol) methyl ether methacrylate (OEGMA; the mean degree of polymerization was 8-9) residues into the PMEO2MA block, shifting from 38 to 43 degrees C as the OEGMA contents varied in the range of 0-10 mol %. In both types of micelles, the inner shell layer consisted of the middle P(DMA-co-QDMA) segment. Subsequently, cross-linking with tetra(ethylene glycol) diazide via click chemistry in the presence of copper catalysts led to the facile preparation of two types of shell-cross-linked (SCL) micelles with inverted structures in purely aqueous solution. The cores and coronas of SCL micelles exhibited multiresponsive swelling/shrinking and collapse/aggregation behavior, respectively. To the best of our knowledge, this represents the first report of the fabrication of two types of SCL micelles with inverted structures from a single schizophrenic water-soluble triblock copolymer in purely aqueous solution." @default.
- W2079402885 created "2016-06-24" @default.
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- W2079402885 date "2009-01-13" @default.
- W2079402885 modified "2023-10-16" @default.
- W2079402885 title "Fabrication of Two Types of Shell-Cross-Linked Micelles with “Inverted” Structures in Aqueous Solution from Schizophrenic Water-Soluble ABC Triblock Copolymer via Click Chemistry" @default.
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- W2079402885 doi "https://doi.org/10.1021/la803616d" @default.
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