Ma Zhanfang, Tian Le, Qiang Hong
Department of Chemistry, Capital Normal University, Beijing 100048, PR China.
J Nanosci Nanotechnol. 2009 Nov;9(11):6716-20. doi: 10.1166/jnn.2009.1365.
A facile approach for fabrication of the gold nanorods (GNRs) monolayer films on quartz slides was exploited. The fabrication procedure just involved that the amino-functionalized quartz slides were immersed directly into the GNRs solutions which was prepared by seed-mediated method and treated with poly(vinyl pyrrolidone) (PVP). The intermolecular hydrogen bonds between the carbonyl groups on the PVP and the amino groups on the amino-functionalized quartz slide were responsible for the GNRs immobilization. The optical response in the visible and the near infrared region of resulting GNRs can be easily controlled simply by varying the immersion time of the substrates. GNRs monolayer films with subtle control over the surface coverage and tunable plasmon resonance as surface-enhanced Raman spectroscopy (SERS) substrates were investigated, which exhibited high SERS activity, stability and reproducibility.
开发了一种在石英载玻片上制备金纳米棒（GNRs）单层膜的简便方法。制备过程仅包括将氨基功能化的石英载玻片直接浸入通过种子介导法制备并用聚乙烯吡咯烷酮（PVP）处理的GNRs溶液中。PVP上的羰基与氨基功能化石英载玻片上的氨基之间的分子间氢键导致GNRs固定。只需改变基底的浸泡时间，就可以轻松控制所得GNRs在可见光和近红外区域的光学响应。研究了作为表面增强拉曼光谱（SERS）基底的、对表面覆盖率有精细控制且等离子体共振可调的GNRs单层膜，其表现出高SERS活性、稳定性和重现性。
