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Mechanochemical synthesis, characterization and functionalization of vinyl-terminated silicon nanoparticles.

机译：乙烯基封端的硅纳米粒子的机械化学合成，表征和功能化。

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摘要

Silicon nanoparticles (SiNPs) are regarded as a promising alternative of traditional II-VI quantum dots in the field of bio-applications due to their photoluminescence and bio-compatibility.;Chapter 1 reviews various synthetic routes and applications of SiNPs.;Chapter 2 describes the mechanochemical synthesis of photoluminescent SiNPs with an organic ligand shell through reactive high energy ball milling (RHEBM). The morphology and size distribution of as-prepared SiNPs were determined by TEM. The bonding modes of the ligand shell including their mole fractions were investigated based on NMR and FTIR spectra of the as-prepared SiNPs.;Chapter 3 introduces the removal of the iron impurities, which were introduced into the SiNPs product from the milling media, stainless steel, by a physical method (GPC) and a chemical method (washing by HCl aqueous solution). The effect of the iron impurities to the optical properties of SiNPs is discussed.;Chapter 4 exhibits the surface functionalization of SiNPs with various functional groups through thiol-ene click reactions of vinyl-terminated SiNPs with various thiols. In addition, SiNP nanoclusters and DNA-conjugated SiNPs were prepared through thiol-ene click reactions of vinyl-terminated SiNPs with a tetrathiol-terminated crosslinker and a thiol-functionalized DNA, respectively.;Chapter 5 is a miscellaneous chapter which includes the preparation of SiNPs through RHEBM of silicon wafers with 2,3-dimethyl-1,3-butadiene, and the effect of UV irradiation at 254 nm to the chemical structures and optical properties of SiNPs.
机译：硅纳米颗粒（SiNPs）由于其光致发光和生物相容性，被认为是生物应用领域中传统的II-VI量子点的有希望的替代品。;第1章介绍了SiNPs的各种合成途径和应用。第2章介绍了通过反应性高能球磨（RHEBM）的化学化学合成具有有机配体壳的光致发光SiNP。通过TEM确定所制备的SiNP的形态和尺寸分布。基于所制备的SiNPs的NMR和FTIR光谱研究了配体壳的键合模式及其摩尔分数。;第3章介绍了铁杂质的去除方法，将铁杂质从研磨介质中引入到SiNPs产品中，不锈钢钢，可以通过物理方法（GPC）和化学方法（用HCl水溶液洗涤）制成。讨论了铁杂质对SiNPs光学性质的影响。第4章通过乙烯基封端的SiNPs与各种硫醇的硫醇-烯点击反应，展示了具有各种官能团的SiNPs的表面官能化。此外，分别通过乙烯基封端的SiNP与四硫醇封端的交联剂和硫醇官能化的DNA的硫醇-烯点击反应制备了SiNP纳米簇和与DNA偶联的SiNP .;第5章是其他章节，其中包括通过具有2,3-二甲基-1,3-丁二烯的硅片的RHEBM制备SiNPs，以及254 nm的紫外线照射对SiNPs的化学结构和光学性质的影响。

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  • 作者

    Kuang, Li.;

  • 作者单位

    Tulane University School of Science and Engineering.;

  • 授予单位 Tulane University School of Science and Engineering.;
  • 学科 Chemistry Physical.;Chemistry Organic.;Chemistry Inorganic.;Chemistry Polymer.;Engineering Chemical.
  • 学位 Ph.D.
  • 年度 2014
  • 页码 223 p.
  • 总页数 223
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 物理化学（理论化学）、化学物理学;
  • 关键词

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