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제123회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Ag@Fe3O4 nanparticles with chiral ligands

2019년 2월 14일 15시 10분 13초
ANAL.P-319 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
4월 19일 (금요일) 11:00~12:30
Analytical Chemistry
저자 및
Junyoung Kwon, Dong-kyu Lee, Jaebeom Lee1,*
Department of Cogno-Mechatronics Engineering, Pusan National University, Korea
1Chemistry, Chungnam National University, Korea
Chirality is a property of asymmetry that has a non-superposable mirror image. The notable property of chirality is the enantioselectivity that is observed in organic, biochemical reactions. It has two forms, L-, D- forms. In some cases, one form is used for medicine, however, the other form has a nonmedical or toxic. So recent developments are focused on this importance to separate two forms by chiral materials. Additionally, by using chiral nanostructure it is possible to controlling polarization of the light. To develop nanoparticles with higher enantioselectivity and polarization selectivity, chiral nanoparticles were synthesized by adsorbing chiral molecules on its surface. Ag@Fe3O4 nanoparticles (NPs) are achiral materials and because of the composition of the shell of the iron, it has a magneto-plasmonic (Mag-plas) property that can be assembled and regulated outer magnetic field and enhanced with varying the shell porosity via an etching process. With increasing shell porosity, the Ag@Fe3O4 NPs are modified to produce highly enhancement of the catalytic activity and surface-enhanced Raman spectroscopy (SERS) effect, resulting from enhanced chemical diffusion into the Ag core. By adsorbing ligands on the surface, we tried to develop Ag@Fe3O4 NPs with chiral surface. Moreover, we tried to modify inner structure by using chiral molecules while crystal formation process of NPs. With this chiral magneto-plasmonic it can be possible to use in biochemistry to distinguish opposite chirality with higher selectivity, which can be used as biosensor and catalyst.