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  • 09월 05일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제120회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Surface-Enhanced Raman Scattering of Gold Nanourchins with Sharp and Short Branches

등록일
2017년 8월 11일 17시 32분 17초
접수번호
3008
발표코드
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발표시간
목 09시 : 34분
발표형식
구두발표
발표분야
Analytical Chemistry - Oral Presentation of Young Analytical Chemists I
저자 및
공동저자
MINJUNG SEO, JI WON HA*
Department of Chemistry, University of Ulsan, Korea
Raman spectroscopy is a useful technique to observe vibrational, rotational, and other low-frequency modes in a system. Raman spectroscopy is complementary with IR and can be used when IR is forbidden. But, spontaneous Raman scattering is typically very weak compared with Rayleigh scattering because Raman intensity is almost 0.001% of the source intensity. Therefore, it is important to develop methods to enhance the signals. SERS (Surface Enhanced-Raman Scattering) is one of the methods that can enhance the signals up to 〖10〗^11. It is the basic principle of SERS that enhances Raman scattering by molecules adsorbed on rough metal surfaces or nanostructures. Various conditions are required for SERS. In the present study, we tried to optimize SERS with gold nanourchins (AuNUs) having sharp tips and rough surface. We tried SERS effect with R6G, p-aminothiophenol as probe molecules, 100-nm AuNUs. Raman spectra were measured with confocal homemade-Raman spectroscopy, and a 785-nm diode laser was used as a radiation source. LSPR peak of 100-nm AuNUs is close to 785-nm laser for resonance effect.

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