Compact large area and high-quality Au film with a hierarchical structure and its application in SERS†
Abstract
We have described a novel and facile strategy for fabricating a compact large area and high-quality Au film with a hierarchical structure (HS) by using a polyaniline slice as a reductant. The unique morphology of the as-prepared Au HS film, which is controlled by the concentration of AuCl4−, results in enhanced Raman signals toward probe molecules such as