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  • 02월 28일 19시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제111회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Thermodynamics of covalent and noncovalent chemistry on carbon nanotubes using photoluminescence: Importance of Self Assembly of Surfactants

등록일
2013년 2월 14일 17시 07분 15초
접수번호
1267
발표코드
ANAL1-5 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
목 11시 : 00분
발표형식
심포지엄
발표분야
분석화학 - Recent Advances in Inorganic Material Analysis
저자 및
공동저자
주상용
연세대학교 화학과, Korea
In spite of the broad scientific attention that single walled carbon nanotubes (SWNTs) have charmed thus far, their lack of chirally-pure nanotubes confines the effective utilization in in both academic research and high-end applications. At the heart of such nanotube purification, the binding affinities between SWNTs and self-assembled surfactants play a key role and current state of the art in nanotube separation exploits cosurfactants for enhancing sorting efficiency. However, the deterministic design rule of utilization of cosurfactant in the sorting scheme is still unknown. In this contribution, we provide flavin mononucleotide (FMN)-wrapped SWNTs as a platform for exchanging with other cosurfactants and reaction with diazonium salt. The determined equilibrium constants from various surfactants originate from the native stability between nanotube and the initial surfactant and provide quantitative information of relative binding affinity and binding mode of various cosurfactants towards each (n,m) nanotubes. Temperature-programmed photoluminescence experiments provide the effects of the combination of two surfactants on the resulting PL, absorption, and thermodynamic parameters. This highlights the importance of surfactant arrangement of surfactant on carbon nanotubes. ACKNOWLEDGMENTS This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2011-0015154).

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