• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chemistry: A European journal >Ionic Liquids of Bis(alkylethylenediACHTUNGTRENUNGamine)silver(I) Salts and the Formation of Silver(0) Nanoparticles from the Ionic Liquid System
【24h】

Ionic Liquids of Bis(alkylethylenediACHTUNGTRENUNGamine)silver(I) Salts and the Formation of Silver(0) Nanoparticles from the Ionic Liquid System

机译：双（烷基乙烯二ACHTUNGTRENUNG胺）银（I）盐的离子液体和离子液体体系中银（0）纳米粒子的形成

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We have prepared novel ionic liquids of bis(N-2-ethylhexylethACHTUNGTRENUNGyl-ACHTUNGTRENUNGenediamine)silver(I) nitrate ([Ag(ethhex-en)2]NO3 and bis(N-hexylethylenediamine) silver(I) hexafluorophosphate ([AgACHTUNGTRENUNG(hex-en)2]PF6), which have transition points at -54 and -6 8C, respectively. Below these transition temperatures, both the silver complexes assume amorphous states, in which the extent of the vitrification is larger for the ethhex- en complex than for the hex-en complex. The diffusion coefficients of both the complex cations, measured between 30 (or 35) and 70 8C, are largely dependent on temperature; the dependence is particularly large in the case of the eth-hex-en complex cation below 40 8C. Small-angle X-ray scattering studies showed that the bilayer structure of the metal complex is formed in the liquid state for both the silver complexes. A direct observation of the yellowish [Ag(eth-hex-en)2]NO3 liquid by transmission electron microscopy (TEM) indicates the presence of nanostructures, as a microemulsion, of less than 5 nm. Such structures were not clearly observed in the [AgACHTUNGTRENUNG hexen) 2]PF6 liquid. Although the [Ag(ethhex-en)2]NO3 liquid is sparingly soluble in bulk water, it readily incorporates a small amount of water up to [water]/[metal complex]=7:1. Homogeneous and uniformly sized silver(0) nanoparticles in water were created by the reduction of the [Ag(eth-hex-en)2]NO3 liquid with aqueous NaBH4, whereas silver(0) nanoparticles were not formed from the [AgACHTUNGTRENUNG(hex-en)2]PF6 liquid in the same way.
机译：我们已经制备了双（N-2-乙基己基乙基ACHTUNGTRENUNGUNG-ACHTUNGTRENUNGEN二胺）硝酸银（[Ag（ethhex-en）2] NO3和双（N-己基乙二胺）六氟磷酸银（I） -en）2] PF6），它们的转变点分别在-54和-6 8C。在这些转变温度以下，两种银配合物均呈非晶态，其中乙稀配合物的玻璃化程度较大在30（或35）和70 8 C之间测得，两种络合物阳离子的扩散系数在很大程度上取决于温度;在eth-hex-en络合物的情况下，这种依赖性特别大阳离子低于40 8C。小角度X射线散射研究表明，两种银配合物均在液态下形成了金属配合物的双层结构，直接观察到微黄色[Ag（eth-hex-en）2用透射电子显微镜（TEM）观察到的] NO3小于5nm的作为微乳液的纳米结构。在[AgACHTUNGTRENUNG hexen）2] PF6液体中未清晰观察到此类结构。尽管[Ag（ethhex-en）2] NO3液体微溶于大量水，但它很容易掺入少量水，直至[水] / [金属络合物] = 7：1。通过用水性NaBH4还原[Ag（eth-hex-en）2] NO3液体，可在水中形成均一且尺寸均匀的银（0）纳米粒子，而[AgACHTUNGTRENUNG（hex）不会形成银（0）纳米粒子-en）2] PF6液体。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

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