文献类型：期刊文献

英文题名：Core-shell octa(azidopropyl) POSS-PEO micelle via "click" chemistry

作者：Li, Yujing[1];Wan, Liqiang[1];Huang, Farong[1];Du, Lei[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Specially Funct Polymer Mat & Related Tec, Shanghai 200237, Peoples R China

年份：2014

卷号：196

起止页码：238

外文期刊名：JOURNAL OF MOLECULAR LIQUIDS

收录：;EI(收录号：20141817645300);WOS:【SCI-EXPANDED(收录号:WOS:000337857700033)】；

基金：The authors gratefully acknowledge the financial support of Shanghai Leading Academic Discipline Project (B502) and Fundamental Research Funds for the Central University (WD113006).

语种：英文

外文关键词：Octa(azidopropyl) POSS; Propargyl-terminated PEO; Micelle; Core-shell

摘要：An amphiphilic OAPS-PEO was synthesized by "click" reaction between octa(azidopropyl) POSS (OAPS) and propargyl-terminated PEO. The structure of OAPS-PEO was characterized by nuclear magnetic resonance (NMR). The amphiphilic properties and aggregation process of OAPS-PEO in aqueous solution were investigated by fluorescence, dynamic and static light scattering (DLS and SLS), and transmission electron microscopy (TEM). The critical aggregates concentration was determined at -0.10 mg/mL using fluorescence measurements. At this concentration, unassociated unimolecular micelles with diameter size of 40-50 nm were found by DLS, and were also studied by means of TEM. At a lower concentration, all the OAPS-PEO self-assembled into loose balls. With the increase of the OAPS-PEO polymer concentration, OAPS centralizes to be the core of the aggregates. At the concentration of 2.0 mg/mL, aggregates present to be a core-shell structure. (c) 2014 Elsevier B.V. All rights reserved.