Thermally-induced (re)shaping of core-shell nanocrystalline particles

被引：37

作者：

Zhang, Q ^{[1
]}

Clark, CG ^{[1
]}

Wang, M ^{[1
]}

Remsen, EE ^{[1
]}

Wooley, KL ^{[1
]}

机构：

[1] Washington Univ, Dept Chem, St Louis, MO 63130 USA

来源：

NANO LETTERS | 2002年 / 2卷 / 10期

关键词：

D O I：

10.1021/nl025653n

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Confinement of poly(E-caprolactone) (PCL) within a cross-linked shell limits the crystal growth to nanoscale dimensions and allows for the thermal melting and crystallization transitions to be exploited as a means to transform the shapes of discrete nanostructured materials between disks and spheres in solution. When adsorbed onto a substrate, the disc-shaped nanostructures undergo an annealing process, which narrows the particle height distribution. Dynamic light scattering and differential scanning calorimetry are techniques that characterize the average behavior for ensembles of nanoparticles, whereas atomic force microscopy is utilized as a method to monitor the response of individual nanoparticles to the thermal treatment. This study represents an adaptation of the thermal reshaping processes that are more commonly employed for inorganic nanocrystals.

引用

页码：1051 / 1054

页数：4

共 45 条

[1] Nanostructured polymer duplexes via the covalent casting of 1-dimensional H-bonding motifs: A new strategy for the self-assembly of macromolecular precursors [J].