两亲性共聚物自组装成纳米管的新方法：小角中子散射表征

Novel self-assembly of amphiphilic copolymers into nanotubes: characterization by small-angle neutron scattering.

作者信息

Malardier-Jugroot C, van de Ven T G M, Cosgrove T, Richardson R M, Whitehead M A

机构信息

Department of Chemistry, McGill University, Montreal, Canada.

出版信息

Langmuir. 2005 Oct 25;21(22):10179-87. doi: 10.1021/la050888a.

DOI:10.1021/la050888a

PMID:16229543

Abstract

The self-assembly into nanotubes in solution of an amphiphilic copolymer is characterized by small-angle neutron scattering (SANS). This study confirmed the shape and the size of the tubular association and the 3-D association of the tubes predicted by molecular orbital theory. Moreover, the characterization of the stability of the association has revealed that the addition of a very small amount of salt to the solution increases the size of the association. When more salt is added, the size of the association decreases, and the structure is altered. The association was found to be independent of temperature and therefore is very stable.

摘要

两亲性共聚物在溶液中自组装成纳米管的过程通过小角中子散射（SANS）进行表征。该研究证实了分子轨道理论预测的管状聚集体的形状、尺寸以及管的三维聚集体。此外，对聚集体稳定性的表征表明，向溶液中添加极少量的盐会增加聚集体的尺寸。当添加更多盐时，聚集体尺寸减小，结构发生改变。发现该聚集体与温度无关，因此非常稳定。