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제116회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Study on elution behavior of non-spherical gold nanoparticles in asymmetrical flow field-flow fractionation (AF4)

2015년 9월 3일 15시 23분 35초
ANAL2.O-14 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
금 15시 : 21분
분석화학 - Oral Presentation of Young Analytical Chemists II
저자 및
최재영, Joontaek Park1, 김선태2, 윤국로, 정의창2, 이승호*
한남대학교 화학과, Korea
1Missouri University of Science & Technology, USA, Korea
2한국원자력연구원 원자력화학연구부, Korea
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승인 1건
Asymmetrical flow field-flow fractionation (AF4) is a diffusion-based separation technique that has been used widely for characterization of various types of colloidal particles and macromolecules. In AF4, the particles (or molecules) of different sizes migrate down the channel at different velocities due to the difference in their diffusion coefficients, yielding a size-based separation. Non-spherical particles have non-uniform diffusive (spreading) movement along the directions of the major and minor axis, while spherical particles have a uniform diffusive movement in all directions. In this study, a theory was developed on the elution behavior of non-spherical particles in AF4. In order to test the proposed theory, non-spherical gold nanoparticle (AuNR) of different aspect ratios were synthesized using the see-mediated growth method, which were coated with cetyl trimethyl ammonium bromide (CTAB) to prevent particle aggregation. The elution behavior of non-spherical particles in AF4 will be discussed based on the measured retention data of the AuNRs.