We show a facile and inexpensive way, termed as plasmonics induced surface modification (PISM), to modify large-scale plasmonic nanostructures by growing Ag nanoislands (NIs) onto their surface merely by simple LED-irradiation. Both the size and density of the Ag NIs can be well regulated by adjusting the irradiating duration. The NIs modification in this system is ascribed to the photocatalytic effect resulting from the enhanced electric fields (E-field) of the plasmonic substrates. The obtained large-scale hierarchical Ag NIs-modified substrates with dense hotspots serve as high-performance surface enhanced Raman scattering (SERS) substrates with the limit of detection to be 10⁻¹⁷ M. Moreover, the structural advantages of the original substrates can be retained and developed. An effective wearable SERS device of glucose detection is further demonstrated. Overall, PISM is promising to be a universal surface modification methodology to expand the variety and complexity of nanostructures, and will be an effective complement to the existing research of plasmonic nanochemistry.

我们展示了一种简单且便宜的方法，称为等离子体激元诱导的表面修饰（PISM），仅通过简单的LED照射即可通过在其表面上生长Ag纳米岛（NI）来修饰大规模的等离子体纳米结构。Ag NIs的大小和密度都可以通过调整照射时间来很好地调节。在这个系统中在NIS修改是归因于从增强电场（所产生的光催化效果Ë电浆基板-field）。获得的具有密集热点的大规模分层Ag NIs修饰基质可作为高性能表面增强拉曼散射（SERS）基质，检测极限为10 ^-17M.此外，原始基板的结构优势得以保留和发展。进一步证明了一种有效的可穿戴式SERS葡萄糖检测装置。总体而言，PISM有望成为一种通用的表面改性方法，以扩大纳米结构的多样性和复杂性，并将成为对等离激元纳米化学研究的有效补充。