首页> 美国卫生研究院文献>Acta Naturae >Gold Nanoparticle Clusters in Quasinematic Layers ofLiquid-Crystalline Dispersion Particles of Double-Stranded NucleicAcids
【2h】

Gold Nanoparticle Clusters in Quasinematic Layers ofLiquid-Crystalline Dispersion Particles of Double-Stranded NucleicAcids

机译:金纳米粒子簇的准运动层双链核的液晶分散粒子酸类

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

The interaction between gold nanoparticles and particles of cholesteric liquid-crystalline dispersions formed by double-stranded DNA and poly(I)×poly(C) molecules is considered. It is shown that small-sized (~ 2 nm) gold nanoparticles induce two different structural processes. First, they facilitate the reorganization of the spatial cholesteric structure of the particles into a nematic one. This process is accompanied by a fast decrease in the amplitude of an abnormal band in the CD spectrum. Second, they induce cluster formation in a “free space” between neighboring nucleic acid molecules fixed in the structure of the quasinematic layers of liquid-crystalline particles. This process is accompanied by slow development of the surface plasmon resonance band in the visible region of the absorption spectrum. Various factors influencing these processes are outlined. Some assumptions concerning the possible mechanism(s) of fixation of gold nanoparticles between the neighboring double-stranded nucleic acid molecules in quasinematic layers are formulated.
机译:考虑了金纳米颗粒与由双链DNA和poly(I)xpoly(C)分子形成的胆甾型液晶分散体颗粒之间的相互作用。结果表明,小尺寸(约2 nm)金纳米颗粒会诱导两种不同的结构过程。首先,它们有助于将颗粒的空间胆甾型结构重组为向列型。该过程伴随着CD频谱中异常频带的幅度的快速减小。其次,它们在固定在液晶粒子准运动层结构中的相邻核酸分子之间的“自由空间”中诱导簇形成。该过程伴随着在吸收光谱的可见区域中表面等离子体激元共振带的缓慢发展。概述了影响这些过程的各种因素。提出了一些关于准纳米层中金纳米颗粒在相邻双链核酸分子之间固定的可能机理的假设。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号