Solubility of gold nanoparticles as a function of ligand shell and alkane solvent.
Solubility of gold nanoparticles as a function of ligand shell and alkane solvent.
复制标题
金纳米粒子的溶解度与配体壳和烷烃溶剂的函数关系。
DOI：
10.1039/c2cp40645d
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
C. Sorensen
中科院分区：
文献类型：
--
作者：
B. Lohman;J. Powell;S. Cingarapu;C. Aakeroy;A. Chakrabarti;K. Klabunde;B. Law;C. Sorensen
Ca的溶解度。5.0系统地研究了纳米金纳米粒子作为配体壳层和溶剂的功能。配体为正辛烷硫醇、癸烷硫醇、十二烷硫醇和十六烷硫醇;溶剂为正烷烃（从己烷到十六烷）和甲苯。在室温（23 °C）下用UV-Vis分光光度法测量与沉淀的纳米颗粒超簇平衡的上清液浓度。与癸烷和十二烷乙烷连接的纳米颗粒的溶解度分别在正癸烷和正十二烷中最大。与此相反，与辛烷-和十六烷基乙基醚连接的纳米颗粒的溶解度随着溶剂链长度的增加而降低。此外，辛烷乙基醚连接体系的溶解度显示出非单调的溶剂碳数官能度，偶数溶剂是比相邻的奇数溶剂更好的溶剂。
The solubility of ca. 5.0 nm gold nanoparticles was studied systematically as a function of ligand shell and solvent. The ligands were octane-, decane-, dodecane- and hexadecanethiols; the solvents were the n-alkanes from hexane to hexadecane and toluene. Supernatant concentrations in equilibrium with precipitated superclusters of nanoparticles were measured at room temperature (23 °C) with UV-Vis spectrophotometry. The solubility of nanoparticles ligated with decane- and dodecanethiol was greatest in n-decane and n-dodecane, respectively. In contrast, the solubility of nanoparticles ligated with octane- and hexadecanethiol showed decreasing solubility with increasing solvent chain length. In addition the solubility of the octanethiol ligated system showed a nonmonotonic solvent carbon number functionality with even numbered solvents being better solvents than neighboring odd numbered solvents.