Gold nanoparticle-coated biomaterial as SERS micro-probes

Bulletin of materials science

G V Pavan Kumar¹ 

[1] Division of Physics and Chemistry, Indian Institute of Science Education and Research (IISER), Pune 411 021, India$$Division of Physics and Chemistry, Indian Institute of Science Education and Research (IISER), Pune 411 021, IndiaDivision of Physics and Chemistry, Indian Institute of Science Education and Research (IISER), Pune 411 021, India$$

关键词: Surface enhanced Raman scattering;    micro-probes;    biomaterial;    plasmonics.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

We report for the first time, on the utility of plant-based biomaterial as enhanced-Raman scattering probes. The bio-substrate used in this study are commonly found in plant extracts, and are cost-effective, mechanically robust, flexible and easily transportable. The probe was fabricated by coating the plant extract with gold nanoparticles and characterized. By employing a ‘single-touch contact’ method, we reveal the ability of these probes to detect routinely used Raman markers such as 2-napthalenethiol and rhodamine B, at nano-molar concentrations, in dry and liquid forms, respectively. Reproducibility of the signals with variation <5%, and the ability to detect biomolecules are demonstrated herein. We envision these bio-probes as potential candidates for enhanced Raman sensing in chemical, environmental, and archaeological applications. By further engineering the shape, morphology, and surface chemistry of these micro-probes, we foresee their utility as miniaturized, natural SERS substrates.

【 授权许可】

Unknown