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Effect of Hydrophobic Octadecyl Groups on pH-Sensitive Aggregation Behavior of Imidazole-Containing Polyaspartammide Derivatives

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The effect of hydrophobic octadecyl groups on pH-dependent aggregation behavior of polyaspartammide derivatives was studied. A series of pH-sensitive amphiphilic polymers with different degrees of octaceylamine (C18) substitution were synthesized through a successive graft reaction of octaceylamine, O-(2-aminoethyl)-O′-methylpolyethylene glycol, and 1-(3-aminopropyl)imidazole on polysuccinimide. Micelle-like nano-aggregates were formed in aqueous solution at pH > 6.8 and they showed different pH dependent aggregation behavior according to degree of substitution (DS) of the hydrophobic C18 chains. These polymers will have a potential application as carriers for pH-sensitive drug release in anticancer or intracellular delivery systems.
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Keywords: 1-(3-AMINOPROPYL)IMIDAZOLE; AMPHIPHILIC POLYMERS; GRAFT COPOLYMERS; PH-SENSITIVE POLYMERS; POLYMER AGGREGATES

Document Type: Research Article

Publication date: 2010-10-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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