Flinders University, School of Chemical and Physical Sciences, Bedford Park, Adelaide, SA 5042.
Phys Chem Chem Phys. 2011 Nov 21;13(43):19587-93. doi: 10.1039/c1cp21765h. Epub 2011 Oct 7.
Electroless deposition was used to coat porous alumina membranes with gold. This process reduced the pore diameters and provided a platform suitable for surface modifications with self assembled monolayers (SAMs). The surface enhanced Raman scattering (SERS) effect was employed in order to confirm and characterise the formation of SAMs of 3-mercaptobenzoic acid (mMBA) inside the pores of gold nanotube membranes prepared using porous alumina (PA) templates. The investigation of the coverage and reproducibility of SAMs within porous matrices is of utmost importance in the design of filtration membranes and sensing platforms. Raman spectroscopy is capable of spatially resolved techniques such as mapping which was used to characterise the distribution of mMBA assembly within the pores. Due to the highly ordered structure of porous alumina and well controlled electroless gold deposition, these gold coated membranes have the potential to develop into SERS active substrates for ultrasensitive sensing technologies.
采用化学镀的方法在多孔氧化铝膜上沉积金。该过程减小了孔径，并提供了一个适合自组装单层（SAMs）表面修饰的平台。为了证实并表征通过多孔氧化铝（PA）模板制备的金纳米管膜内孔中 3-巯基苯甲酸（mMBA）SAM 的形成，采用表面增强拉曼散射（SERS）效应。在过滤膜和传感平台的设计中，对多孔基质中 SAM 的覆盖率和重现性的研究至关重要。拉曼光谱能够进行空间分辨技术，如映射，用于表征 mMBA 组装在孔内的分布。由于多孔氧化铝的高度有序结构和对化学镀金的良好控制，这些镀金膜有可能成为用于超灵敏传感技术的 SERS 活性衬底。
