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Facile route to SnS nanocrystals and their characterization

机译:SnS纳米晶体的简便合成方法及其表征

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摘要

SnS nanocrystals (NCs) were synthesized in oleylamine using the hot-injection technique from tin(II) chloride and diethylammonium diethyldithiocarbamate in the presence of dodecanethiol. X-ray diffraction (XRD) and high resolution transmission electron microscopy (HRTEM) analysis revealed the formation of single crystalline SnS NCs with sizes finely controlled by synthetic conditions. Rutherford backscattering spectrometry (RBS) and X-ray photoelectron spectroscopy (XPS) investigation confirmed the formation of SnS in a nearly stoichiometric ratio with additional evidence of the SnS NCs surface oxidation when NCs were stored in the air. Optical absorption measurements showed a shift in band gap energy of SnS NCs towards larger values with decreasing particle sizes. SnS NCs were successfully transferred into water using cetyltrimethylammonium bromide and Vitamin E as surfactants. These VIS/N1R absorbing SnS NCs should have widespread applications in the construction of efficient photoelectronic devices and probes in bioimaging due to their unique optoelectronic properties and low toxicity.
机译:在十二烷基硫醇的存在下,使用氯化锡(II)和二乙基二硫代氨基甲酸二乙铵的热注射技术在油胺中合成SnS纳米晶体(NCs)。 X射线衍射(XRD)和高分辨率透射电子显微镜(HRTEM)分析显示,单晶SnS NCs的形成受到合成条件的精细控制。卢瑟福背散射光谱(RBS)和X射线光电子能谱(XPS)研究证实,当NCs储存在空气中时,SnS的形成接近于化学计量比,并进一步证明了SnS NCs表面被氧化。光吸收测量结果表明,随着粒径的减小,SnS NCs的带隙能量向更大的值移动。使用十六烷基三甲基溴化铵和维生素E作为表面活性剂将SnS NCs成功转移到水中。这些具有VIS / N1R吸收能力的SnS NCs由于其独特的光电特性和低毒性,因此在生物成像中高效光电器件和探针的构造中应具有广泛的应用。

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  • 来源
    《Materials Science and Engineering》 |2010年第3期|P.117-122|共6页
  • 作者单位

    Department of Chemistry, Vanderbilt University, Station B 351822, Nashville, TN 37235, USA Vanderbilt Institute of Nanoscale Science and Engineering, Vanderbilt University, Station B 350106, Nashville, TN 37235, USA;

    rnDepartment of Chemistry, Vanderbilt University, Station B 351822, Nashville, TN 37235, USA Vanderbilt Institute of Nanoscale Science and Engineering, Vanderbilt University, Station B 350106, Nashville, TN 37235, USA;

    rnVanderbilt Institute of Nanoscale Science and Engineering, Vanderbilt University, Station B 350106, Nashville, TN 37235, USA Department of Chemical and Biomolecular Engineering, Vanderbilt University, VU Station B 351604, Nashville, TN 37235, USA;

    rnDepartment of Chemical and Biomolecular Engineering, Vanderbilt University, VU Station B 351604, Nashville, TN 37235, USA;

    rnVanderbilt Institute of Nanoscale Science and Engineering, Vanderbilt University, Station B 350106, Nashville, TN 37235, USA Department of Chemical and Biomolecular Engineering, Vanderbilt University, VU Station B 351604, Nashville, TN 37235, USA;

    rnDepartment of Chemistry, Vanderbilt University, Station B 351822, Nashville, TN 37235, USA Vanderbilt Institute of Nanoscale Science and Engineering, Vanderbilt University, Station B 350106, Nashville, TN 37235, USA Department of Chemical and Biomolecular Engineering, Vanderbilt University, VU Station B 351604, Nashville, TN 37235, USA Department of Physics and Astronomy, Vanderbilt University, 1807 Station B, Nashville, TN 37235, USA Department of Pharmacology, Vanderbilt University, 1211 Medical Center Drive, Nashville, TN 37232, USA;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    tin sulfide; colloidal nanocrystals; chemical synthesis;

    机译:硫化锡胶体纳米晶体;化学合成;

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