Effect of thiol chemisorption on the transport properties of gold nanotubule membranes
Effect of thiol chemisorption on the transport properties of gold nanotubule membranes
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DOI：
10.1021/ac990615i
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发表时间：
1999-11-01
影响因子：
7.4
通讯作者：
Martin, CR
中科院分区：
文献类型：
--
作者：
Jirage, KB;Hulteen, JC;Martin, CR
采用无电镀金沉积方法在聚碳酸酯模板膜的孔内沉积存款Au纳米管，制备了内径为2和3 nm的含有Au纳米管的膜用于这些研究。巯基被化学吸附到肾小管内壁上，以改变肾小管内的化学环境。研究了肾小管内的化学环境对含小管膜的转运性质的影响。用HS-C16 H33改性的膜优先运输疏水渗透分子。当使用一系列同源的渗透物分子时，最疏水的渗透物优先被分配到HS-C16 H33衍生膜中并被其转运。此外，还研究了烷基链长（R）对硫醇R-SH同系物的影响，疏水性渗透分子优先分配到含最大烷基的膜中并被其转运。与此相反，膜改性与HS-C2 H4 OH优先运输更亲水渗透吡啶。最后，我们在这里表明，HS-C16 H33衍生膜可用于分离疏水性物质从亲水性物质。
An electroless gold deposition method was used to deposit Au nanotubules within the pores of a polycarbonate template membrane, Membranes containing Au nanotubules with inside diameters of 2 and 3 nm were prepared for these studies. Thiols were chemisorbed to the inside tubule walls in order to change the chemical environment within the tubules, The effect of the chemical environment within the tubules on the transport properties of the tubule-containing membrane was investigated. Membranes modified with HS-C16H33 preferentially transported hydrophobic permeant molecules. When a homologous series of permeant molecules was used, the most hydrophobic permeant was preferentially partitioned into and transported by the HS-C16H33 derivatized membrane. In addition, the effect of alkyl chain length (R), in a homologous series of thiols R-SH, was investigated, Hydrophobic permeant molecules were preferentially partitioned into and transported by membranes containing the largest alkyl group. In contrast, membranes modified with HS-C2H4OH preferentially transported the more hydrophilic permeant pyridine. Finally, we show here that the HS-C16H33 derivatized membrane can be used to separate hydrophobic species from hydrophilic species.