| A SERS method with attomolar sensitivity: a case study with the flavonoid catechin | |
|---|---|
| 學年 | 106 |
| 學期 | 1 |
| 出版（發表）日期 | 2018-01-17 |
| 作品名稱 | A SERS method with attomolar sensitivity: a case study with the flavonoid catechin |
| 作品名稱（其他語言） | |
| 著者 | Chia-Chi Huang; Wenlung Chen |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | Microchimica Acta 185, 120 |
| 摘要 | Making good use of interactions between analyte molecules and the metal nanoparticles is key to impact the detection limit in a surface-enhanced Raman scattering (SERS) based detections. SERS was applied to the analysis of catechin and it was found that the relative abundance of catechin in the sample to citrate-capped AgNPs and the aggregation agent NaCl plays a critical role in the quality of detection. At a component volume ratio of 6:2:1 (catechin:AgNPs:NaCl), catechin can be detected at µM levels. When the ratio is 12:2:1, Raman signals are discernible even at the attomolar concentration level (10−18 M). Under these conditions, the SERS mechanisms and the force of laser tweezers function best. The extent of signal enhancement enabled an ultrasensitive and reproducible Raman spectroscopic determination of catechin. |
| 關鍵字 | Raman spectroscopy;Citrate-capped AgNPs;Aggregation agent;Attomolar detection |
| 語言 | en_US |
| ISSN | 1436-5073 |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | 是 |
| 國別 | AUT |
| 公開徵稿 | |
| 出版型式 | ,電子版,紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/120072 ) |
| SDGS | 夥伴關係,良好健康和福祉,優質教育 |
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