Temperature-driven self-assembly of self-limiting uniform supraparticles from non-uniform unimolecular micelles

被引：8
|
作者：
Picco, Agustin S. [1 ]
Yameen, Basit [2 ,3 ]
Knoll, Wolfgang [4 ]
Ceolin, Marcelo R. [1 ]
Azzaroni, Omar [1 ]
机构：
[1] UNLP, CONICET, Inst Invest Fisicoquim Teor & Aplicadas INIFTA, CC 16 Suc 4, RA-1900 La Plata, Buenos Aires, Argentina
[2] Harvard Univ, Sch Med, Lab Nanomed & Biomat, Boston, MA 02115 USA
[3] LUMS, SBA Sch Sci & Engn, Dept Chem, Lahore 54792, Pakistan
[4] AIT, Donau City Str 1, A-1220 Vienna, Austria
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2016年 / 471卷
关键词：
Self-assembly; Supraparticles; Unimolecular micelles; Hyperbranched polymers; Supramolecular assembly; Self-limited growth; PNIPAm; BLOCK-COPOLYMERS; PHASE-TRANSITIONS; HYDRATION STATES; POLY(N-ISOPROPYLACRYLAMIDE); ENCAPSULATION; AGGREGATION; MECHANISM; WATER; CHEMISTRY; POLYMERS;
D O I：
10.1016/j.jcis.2016.03.005
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this work, the self-assembly of non-uniform unimolecular micelles constituted of a hyperbranched polyester core decorated with a corona of thermoresponsive poly(N-isopropylacrylamide) (PNIPAm) chains has been studied. As revealed by dynamic light scattering (DLS), transmission electron microscopy (TEM) and small angle X-ray scattering (SAXS), these unimicelles form uniform supraparticles through a thermally-induced self-limited process, as well as exhibit molecular features commonly observed in PNIPAm-based gels. We believe that these results provide new insights into the application of stimuli responsive polymeric materials as versatile building blocks to build up soft supraparticles displaying well-defined dimensional characteristics. (C) 2016 Elsevier Inc. All rights reserved.
引用
收藏
页码：71 / 75
页数：5
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