Quadruple-Responsive Nanocomposite Based on Dextran-PMAA-PNIPAM, Iron Oxide Nanoparticles, and Gold Nanorods

被引：9

作者：

Feng, Wenqian ^{[1
]}

Lv, Weipeng ^{[1
]}

Qi, Junjie ^{[1
]}

Zhang, Guoliang ^{[1
]}

Zhang, Fengbao ^{[1
]}

Fan, Xiaobin ^{[1
]}

机构：

[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2012年 / 33卷 / 02期

基金：

中国国家自然科学基金;

关键词：

blue-shift; gold nanorod; reversible addition fragmentation chain transfer (RAFT); stimuli-sensitive polymers; superparamagnetic iron oxide; MAGNETIC NANOPARTICLES; DRUG-DELIVERY; PH; TEMPERATURE; STIMULI; MICROGELS; POLYMERS; ACID); FUNCTIONALIZATION; NANOMATERIALS;

D O I：

10.1002/marc.201100595

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 [高分子化学与物理];

摘要：

A quadruple-responsive nanocomposite that responds to temperature, pH, magnetic field, and NIR is obtained by incorporating superparamagnetic iron oxide nanoparticles (SPIONs) and gold nanorods (AuNRs) into a dextran-based smart copolymer network. The dual-sensitive copolymer is prepared by sequential RAFT polymerization of methacrylic acid and N-isopropylacrylamide from trithiocarbonate groups linked to dextran in one pot. These functionalized nanocomposites with superior stability can respond to the four stimuli mentioned above well. As evidenced by UVvis and TEM measurements, the temperature-induced unusual blue-shift in the longitudinal plasmon band is possibly due to the side-to-side assembly of AuNRs.

引用

页码：133 / 139

页数：7

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