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• W2105465900 endingPage "2593" @default.
• W2105465900 startingPage "2586" @default.
• W2105465900 abstract "Well-defined AB2 Y-shaped miktoarm star polypeptide copolymer, PZLL-b-(PBLG)2, was synthesized via a combination of ring-opening polymerization (ROP) of α-amino acid N-carboxyanhydride (NCA) and click chemistry, where PZLL is poly(ϵ-benzyloxycarbonyl-l-lysine) and PBLG is poly(γ-benzyl-l-glutamate). First, two types of primary-amine-containing initiators, N-aminoethyl 3,5-bis(propargyloxyl)-benzamide and 3-azidopropylamine, were synthesized and employed for the ROP of NCA, leading to the formation of dialkynyl-terminated PZLL and azide-terminated PBLG, dialkynyl-PZLL and PBLG-N3, respectively. The subsequent copper(I)-catalyzed cycloaddition reaction between dialkynyl-PZLL and slightly excess PBLG-N3 led to facile preparation of PZLL-b-(PBLG)2 Y-shaped miktoarm star polypeptide copolymer. The excess PBLG-N3 was scavenged off by reacting with alkynyl-functionalized Wang resin. The obtained Y-shaped miktoarm star polypeptide copolymer was characterized by gel permeation chromatograph (GPC), Fourier transform-infrared spectroscopy (FT-IR), and1H NMR. Moreover, after the hydrolysis of protecting benzyl and benzyloxycarbonyl groups of PZLL-b-(PBLG)2, water-soluble pH-responsive Y-shaped miktoarm star polypeptide copolymer, PLL-b-(PLGA)2, was obtained, where PLL is poly(l-lysine) and PLGA is poly(l-glutamic acid). It can self-assemble into PLGA-core micelles at acidic pH and PLL-core micelles at alkaline pH, accompanied with the coil-to-helix transition of PLGA and PLL sequences, respectively. The spontaneous pH-responsive supramolecular assembly of PLL-b-(PLGA)2 miktoarm star polypeptide copolymer has been investigated via a combination of 1H NMR, laser light scattering (LLS), transmission electron microscopy (TEM), and circular dichroism (CD) spectroscopy." @default.
• W2105465900 created "2016-06-24" @default.
• W2105465900 creator A5018172362 @default.
• W2105465900 creator A5018940391 @default.
• W2105465900 creator A5023154006 @default.
• W2105465900 creator A5030937712 @default.
• W2105465900 date "2008-07-09" @default.
• W2105465900 modified "2023-10-03" @default.
• W2105465900 title "Facile Preparation of Well-Defined AB₂ Y-Shaped Miktoarm Star Polypeptide Copolymer via the Combination of Ring-Opening Polymerization and Click Chemistry" @default.
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• W2105465900 doi "https://doi.org/10.1021/bm800462q" @default.
• W2105465900 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/18611048" @default.
• W2105465900 hasPublicationYear "2008" @default.
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