| 학회 |
한국공업화학회 |
| 학술대회 |
2022년 봄 (05/11 ~ 05/13, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 |
26권 1호 |
| 발표분야 |
포스터-정밀화학 |
| 제목 |
SERS and Magnetic Dual-Function Nanoprobes for Highly Sensitive and Effective On-Site Organic Chemical Detection |
| 초록 |
In this work, we synthesized magnetic silver nanoshell (M-AgNS) with magnetic and SERS properties for SERS-based detection. The M-AgNS consists of thousands of Fe3O4 nanoparticles for fast aggregation and bumpy silver shell for sensitive SERS detection by NIR (near-infrared region) laser excitation. The intensity of the SERS signal emitted by the M-AgNS was strong enough to provide single particle level detection abilities. We obtained stronger SERS signal intensity with aggregated M-AgNS than with non-aggregated AgNS. 4-Fluorothiopenol (4-FBT) was detected at a low concentration of 1 nM corresponding to 0.16 ppb and the limit of detection for tetramethylthiuram disulfide was 10 µM, which corresponds to 3 ppm. By using a portable Raman system, the M-AgNS can be used to detect trace amounts of organic molecules. |
| 저자 |
김우연, 김재희, 김윤희, 함경민, 전봉현
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| 소속 |
건국대 |
| 키워드 |
surface-enhanced Raman scattering; magnetic aggregation; on-site detection
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| E-Mail |
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