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首页> 外文期刊>Physical chemistry chemical physics: PCCP >Versatile surface-active ionic liquid: construction of microemulsions and their applications in light harvesting
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Versatile surface-active ionic liquid: construction of microemulsions and their applications in light harvesting

机译：通用表面活性离子液体：微乳液的构建及其在光收获中的应用

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摘要

This article outlines a sustainable method towards the synthesis of advanced materials such as core/shell Quantum Dots (QDs) and their in situ stabilization using microemulsions (MEs). QDs are versatile materials which show unusual optical properties. We have constructed MEs consisting of an Ionic Liquid (IL) based surfactant i.e. choline dioctylsulfosuccinate, [Cho][AOT] as an emulsifier, toluene as a nonpolar phase and water as a polar phase. The system forms a large single-phase region in the phase diagram without any co-surfactant. Spontaneous formation of micelles has been observed and studied through tensiometry and fluorescence and isothermal titration calorimetry (ITC). The exceptional swelling behaviour of the MEs was studied using Dynamic Light Scattering (DLS) and small angle neutron scattering (SANS). In ME droplets, i.e. Reverse Micelles (RMs), we successfully synthesized spherical core/shell QDs (size similar to 3 to similar to 6 nm) with precise control over the size and morphology. The QDs have been characterized using Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and Powder X-ray Diffraction (PXRD). QDs stabilized in MEs exhibited excellent optical properties and can be suitably used as light harvesting materials for diverse applications.
机译：本文概述了一种可持续的方法，旨在合成核心/壳量子点（QDS）等先进材料，使用微乳液（MES）原位稳定。 QD是多功能材料，显示出异常的光学性质。我们已经构建了由基于离子液体（IL）基础表面活性剂的MES，即胆碱二辛酰磺酸盐，[CHO] [AOT]作为乳化剂，甲苯作为非极性相和作为极性相的水。该系统在没有任何共表面活性剂的相图中形成大的单相区域。已经观察到胶束自发形成，并通过张力测定和荧光和等温滴定热量（ITC）研究。使用动态光散射（DLS）和小角度散射（SAN）研究了ME的特殊膨胀行为。在ME液滴中，即反转胶束（RMS），我们成功地合成了球形核心/壳QD（尺寸与3至相似的尺寸为6 nm），具有精确控制尺寸和形态。已经使用扫描电子显微镜（SEM），透射电子显微镜（TEM）和粉末X射线衍射（PXRD）表征了QD。在MES中稳定的QD表现出优异的光学性能，可适合用作不同应用的光收集材料。

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    Damarla Krishnaiah; Mehra Sanjay; Bahadur Pratap; Ray Debes; Aswal V. K.; Kumar Arvind;

  • 作者单位

    CSIR Cent Salt &

    Marine Chem Res Inst GB Marg Bhavnagar 364002 Gujarat India;

    CSIR Cent Salt &

    Marine Chem Res Inst GB Marg Bhavnagar 364002 Gujarat India;

    VN South Gujarat Univ Dept Chem Udhana Magdalla Rd Surat 395007 Gujarat India;

    Bhabha Atom Res Ctr Div Solid State Phys Mumbai 400085 Maharashtra India;

    Bhabha Atom Res Ctr Div Solid State Phys Mumbai 400085 Maharashtra India;

    CSIR Cent Salt &

    Marine Chem Res Inst GB Marg Bhavnagar 364002 Gujarat India;

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  • 正文语种 eng
  • 中图分类 物理学;化学;
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