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  • 09월 10일 16시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제124회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Fluorescence Correlation Spectroscopy of Gold Nanoclusters

등록일
2019년 8월 29일 16시 42분 37초
접수번호
1881
발표코드
PHYS.P-221 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 17일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
Physical Chemistry
저자 및
공동저자
Je in Park, Hahkjoon Kim*
Department of Chemistry, Duksung Women's University, Korea
Nanoclusters are miniaturized nanoparticles of 1-3 nm smaller than nanoparticles and are homogeneous. Hydrodynamic radius of the nanoclusters in solution is important because the fluorescence properties are related to the size of the clusters such as aggregation-induced emission (AIE). Fluorescence correlation spectroscopy (FCS) employs photon correlation analysis of fluctuations in fluorescence intensity to gain insight into the diffusion of the samples such as hydrodynamic radius and average concentration. However, the fluorescence of AuNC is so weak that it is very difficult to obtain fluorescence correlation directly from AuNC. In this research, we synthesized thiolated gold nanoclusters (AuNC) and labeled the gold nanoclusters (Au10~12(SR)10~12, Au15(SR)13, Au18(SR)14, Au25(SR)18) with biotinylated fluorescent dye to measure fluorescence correlation and obtained the characteristic diffusion times AuNCs. We found that the diameters of dye labeled-Au NCs are ~2 nm based on the diffusion times obtained from FCS fits.

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