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제124회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Fabrication of 2D Tripod Nanoframe Structures for Single-particle Surface-enhanced Raman Scattering Measurement

등록일
2019년 8월 30일 11시 13분 13초
접수번호
1921
발표코드
MAT.P-395 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 17일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
Material Chemistry
저자 및
공동저자
Jeongwon Kim, Sungho Park*, Sungwoo Lee, Junghwa Lee
Department of Chemistry, Sungkyunkwan University, Korea
Single-particle surface-enhanced Raman scattering has been studied through tailoring intermolecular or intramolecular gap sizes of nanoparticles in order to produce hotspots. Herein, the complexed tripod nanoframe structures for SERS substrate were designed from Au nanoprism solid in wet-chemical method, which can confine the electric fields inside of the nanoframe structure. The tripod shape was formed as the tip regions got grew and edge regions etched out during the shape transformation reaction. AuPt tripod frame structures were successfully obtained through multi-steps that involve Pt rim specific growth reaction and Au etching reaction. In the reaction of Au regrowth, the Au residues existed on the inner side of the AuPt frame induce the eccentric growth. When a little amount of silver ions were added in the reaction, the concentric regrowth is favored because silver ions can reduce the lattice mismatches of Au and Pt. The 2D Au tripod nanoframe structure can serve as a single particle SERS enhancer in the concentric growth with tailorable control of the intramolecular gap.

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