| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO)) |
| 권호 |
25권 1호 |
| 발표분야 |
포스터-무기재료 |
| 제목 |
Dopamine-induced Self-assembled Anisotropic Strings of Plasmonic Nanoparticles Conjugated with MoS2 for High Performance SERS-based Biosensing |
| 초록 |
Surface-enhanced Raman scattering (SERS) utilizing plasmonic metals combined with transition metal dichalcogenide has received much attention in bio-applications due to highly enhanced detection sensitivity. In this study, we report the SERS-based sensors consisting of ultrathin 2D MoS2 NS decorated Au nanoworms (Au NWs). Au NW was prepared by dopamine-induced self-polymerization of Au nanoparticles (NPs). To enhance the plasmon coupling effects, the gap between Au NW and MoS2 was further controlled within 2 nm level via polyvinyl pyrrolidone. The resultant nanostructure exhibited giant LSPR field enhancement and coupling effect with MoS2 NS, allowing for abundant hot spots. The AuNW@MoS2 with optimized configuration showed SERS enhancement factor on the order of 107 which was 104 times higher than that available with the colloidal Au NPs. |
| 저자 |
원홍, 김동하
|
| 소속 |
이화여자대 |
| 키워드 |
Self-polymerization; SERS; Plasmonic coupling effect; Au NW
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| E-Mail |
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