基于乳酸衍生物的含液晶配体的银纳米颗粒。

Silver Nanoparticles with Liquid Crystalline Ligands Based on Lactic Acid Derivatives.

作者信息

Troha Tinkara, Kaspar Miroslav, Hamplova Vera, Cigl Martin, Havlicek Jaroslav, Pociecha Damian, Novotna Vladimira

机构信息

Institute of Physics of the Czech Academy of Sciences, 18221 Prague, Czech Republic.

Faculty of Chemistry, University of Warsaw, ul. Zwirki i Wigury 101, 02-089 Warsaw, Poland.

出版信息

Nanomaterials (Basel). 2019 Jul 25;9(8):1066. doi: 10.3390/nano9081066.

DOI:10.3390/nano9081066

PMID:31349601

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6723366/

Abstract

We have prepared and studied silver nanoparticles functionalized with ligands based on lactic acid derivatives. Several types of hybrid systems that differed in the size of silver nanoparticles as well as the length of surface ligands were analyzed. Transmission electron microscopy (TEM) observation provided information about the size and shape of nanoparticles and proved good homogeneity of studied systems. By dynamic light scattering (DLS) measurements, we have measured the size distribution of nanoparticle systems. Plasmonic resonance was detected at around 450 nm. For two hybrid systems, the mesomorphic behaviour has been demonstrated by x-ray measurements. The observed thermotropic liquid crystalline phases reveal lamellar character. We have proposed a model based on self-assembly of intercalated liquid crystalline ligands.

摘要

我们制备并研究了基于乳酸衍生物配体功能化的银纳米颗粒。分析了几种在银纳米颗粒尺寸以及表面配体长度方面存在差异的杂化体系。透射电子显微镜（TEM）观察提供了有关纳米颗粒尺寸和形状的信息，并证明了所研究体系具有良好的均匀性。通过动态光散射（DLS）测量，我们测定了纳米颗粒体系的尺寸分布。在约450nm处检测到等离子体共振。对于两种杂化体系，通过X射线测量证明了其介晶行为。观察到的热致液晶相呈现层状特征。我们提出了一种基于插层液晶配体自组装的模型。