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  • 09월 01일 18시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제118회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Controlled Assembly of Nanoparticles for Plasmon Coupling Studies

등록일
2016년 8월 28일 14시 11분 59초
접수번호
2102
발표코드
PHYS3-1 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 13시 : 20분
발표형식
분과기념
발표분야
물리화학 - Recent Physical Chemistry Studies on Nanomaterials
저자 및
공동저자
윤상운
중앙대학교 화학과, Korea
The assembly of noble metal nanoparticles offers an appealing means to control and enhance the plasmonic properties of nanostructures. Despite their great advantages, however, making nanoassemblies in a controlled fashion with high efficiency remains challenging. In this talk, I will present our efforts to assemble nanoparticles into various structures with high yields, including core-satellites, sphere dimers, and sphere-cube dimers.[1–3] The interparticle distance (d) in these assemblies is finely tuned at the molecular level using self-assembled monolayers of alkanedithiol linkers. The controlled interparticle distance and ultrahigh purity of the prepared nanoassemblies allow us to investigate the plasmon coupling between the nanoparticles as a function of the gap distance. We find that the plasmon coupling follows the classical electromagnetic model when the nanoparticles are far apart (d > 1 nm); however, quantum tunneling effects play a significant role in the plasmonic response of nanoassemblies in the subnanometer gap region.[1,2,4] I will also briefly introduce our recent attempts to control the interparticle distance continuously using photooxidative desorption of linkers.[5] At the end of the talk, I will discuss the future direction of our research.

[1] Cha, H.; Yoon, J. H.; Yoon, S. ACS Nano 2014, 8, 8554.
[2] Yoon, J. H.; Lim, J.; Yoon, S. ACS Nano 2012, 6, 7199.
[3] Lee, D.; Yoon, S. J. Phys. Chem. C 2015, 119, 7873.
[4] Yoon, J. H.; Zhou, Y.; Blaber, M. G.; Schatz, G. C.; Yoon, S. J. Phys. Chem. Lett. 2013, 4, 1371.
[5] Jung, H.; Cha, H.; Lee, D.; Yoon, S. ACS Nano 2015, 9, 12292.

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