2,2-dimethylhexadecane-1-thiol | 1005762-27-5

• 分子结构分类: 有机化合物 - 有机硫化合物 - 硫醇
• 英文名称: 2,2-dimethylhexadecane-1-thiol
• 英文别名: 2,2-Dimethylhexadecane-1-thiol
• CAS: 1005762-27-5
• 化学式: C₁₈H₃₈S
• 分子量: 286.566
• InChiKey: IWBPNQDCVOQJAL-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  9.1
• 重原子数：
  19
• 可旋转键数：
  14
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  1
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  在 lithium aluminium tetrahydride 作用下， 以 四氢呋喃 为溶剂， 反应 6.0h， 以2.1 g的产率得到2,2-dimethylhexadecane-1-thiol
  参考文献：
  名称：

  Rationally Designed Ligands that Inhibit the Aggregation of Large Gold Nanoparticles in Solution

  摘要：

  Hexadecanethiol (n-C16), 2,2-dimethylhexadecane-1-thiol (DMC16), and the multidentate thiol-based ligands 2-tetradecylpropane-1,3-dithiol (C16C2), 2-methyl-2-tetradecylpropane-1,3-dithiol (C16C3), and 1,1,1-tris(mercaptomethyl)pentadecane (t-C16) were evaluated for their ability to stabilize large gold nanoparticles (> 15 nm) in organic solution. Citrate-stabilized gold nanoparticles (20-50 nm) treated with the ligands were extracted from aqueous solution and dispersed into toluene. The degree of aggregation of the gold nanoparticles was monitored visually and further confirmed by UV-vis spectroscopy and dynamic light scattering (DLS). The bidentate ligands (C16C2 and C16C3) and particularly the tridentate ligand (t-C16) showed enhanced abilities to inhibit the aggregation of large gold nanoparticles in organic solution. For gold nanoparticles modified with these multidentate ligands, bound thiolate (S-2p3/2 binding energy of 162 eV) was the predominant sulfur species (>85%) as evaluated by X-ray photoelectron spectroscopy (XPS). Although an entropy-based resistance to ordering of the loosely packed surfactant layers was initially considered to be a plausible mechanism for the enhanced stabilization afforded by the multidentate ligands, when taken as a whole, the data presented here support a model in which the enhanced stabilization arises largely (if not solely) from the multidentate chelate effect.

  DOI：

  10.1021/ja0724588

文献信息

• Rationally Designed Ligands that Inhibit the Aggregation of Large Gold Nanoparticles in Solution
  作者：Shishan Zhang、Gyu Leem、La-ongnuan Srisombat、T. Randall Lee

  DOI：10.1021/ja0724588

  日期：2008.1.1

  Hexadecanethiol (n-C16), 2,2-dimethylhexadecane-1-thiol (DMC16), and the multidentate thiol-based ligands 2-tetradecylpropane-1,3-dithiol (C16C2), 2-methyl-2-tetradecylpropane-1,3-dithiol (C16C3), and 1,1,1-tris(mercaptomethyl)pentadecane (t-C16) were evaluated for their ability to stabilize large gold nanoparticles (> 15 nm) in organic solution. Citrate-stabilized gold nanoparticles (20-50 nm) treated with the ligands were extracted from aqueous solution and dispersed into toluene. The degree of aggregation of the gold nanoparticles was monitored visually and further confirmed by UV-vis spectroscopy and dynamic light scattering (DLS). The bidentate ligands (C16C2 and C16C3) and particularly the tridentate ligand (t-C16) showed enhanced abilities to inhibit the aggregation of large gold nanoparticles in organic solution. For gold nanoparticles modified with these multidentate ligands, bound thiolate (S-2p3/2 binding energy of 162 eV) was the predominant sulfur species (>85%) as evaluated by X-ray photoelectron spectroscopy (XPS). Although an entropy-based resistance to ordering of the loosely packed surfactant layers was initially considered to be a plausible mechanism for the enhanced stabilization afforded by the multidentate ligands, when taken as a whole, the data presented here support a model in which the enhanced stabilization arises largely (if not solely) from the multidentate chelate effect.