Jirage K B, Hulteen J C, Martin C R
Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523.
Anal Chem. 1999 Nov 1;71(21):4913-8. doi: 10.1021/ac990615i.
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-C(16)H(33) 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-C(16)H(33) 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-C(2)H(4)OH preferentially transported the more hydrophilic permeant pyridine. Finally, we show here that the HS-C(16)H(33) derivatized membrane can be used to separate hydrophobic species from hydrophilic species.
采用化学镀金法在聚碳酸酯模板膜的孔内沉积金纳米管。为这些研究制备了内径为2纳米和3纳米的含金纳米管的膜。硫醇化学吸附在管内壁上，以改变管内的化学环境。研究了管内化学环境对含管膜传输性能的影响。用HS-C(16)H(33)修饰的膜优先传输疏水性渗透分子。当使用一系列同系物渗透分子时，疏水性最强的渗透分子优先分配到HS-C(16)H(33)衍生化膜中并通过该膜传输。此外，还研究了硫醇R-SH同系物中烷基链长度（R）的影响。疏水性渗透分子优先分配到含最大烷基的膜中并通过该膜传输。相比之下，用HS-C(2)H(4)OH修饰的膜优先传输亲水性更强的渗透分子吡啶。最后，我们在此表明，HS-C(16)H(33)衍生化膜可用于从亲水性物质中分离疏水性物质。
