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학술발표회초록보기

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결제문의 member@kcsnet.or.kr

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  • 03월 02일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제109회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Synthesis and electrochemical properties of water-soluble Au25 nanoparticles

등록일
2012년 2월 16일 15시 07분 43초
접수번호
0994
발표코드
ELEC.P-1267 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 25일 (수요일) 18:00~21:00
발표형식
포스터
발표분야
전기화학
저자 및
공동저자
곽규주, 이동일
연세대학교 화학과, Korea
In recent years, the synthesis and characterization of thiolate-protected gold nanoparticles have drawn broad research interests because of their unusual physical and chemical properties. Au25 nanoparticles, in particular, have been extensively studied because they are exceptionally stable and exhibit unique electrochemical and optical properties. In this poster, we present the preparation and electrochemical and spectroscopic characterization of Au25 protected with mercaptopropanoic sulfonate (MPS). The MPS-Au25 nanoparticles were water-soluble, highly monodisperse and their chemical composition was identified as Au25(MPS)18 using electrospray ionization mass spectrometry. The MPS-Au25 nanoparticles also show the characteristic UV-vis absorption profile and photoluminescence properties. The electrochemical characterization of the water soluble MPS-Au25 nanoparticles were carried out by transferring them into organic solvent, for example, dichloromethane, using a phase transfer agent. The phase transferred MPS-Au25 display the characteristic voltammetry of Au25, that is, well-defined voltammetric peaks with large electrochemical HOMO-LUMO gap.

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