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학술발표회초록보기

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

제118회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Structural Effects on Symmetry Breaking Photoinduced Charge Transfer of 9,9’-Bianthracene

등록일
2016년 9월 1일 14시 30분 44초
접수번호
2380
발표코드
PHYS.P-445 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 13일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
물리화학
저자 및
공동저자
이창민, 주태하*
POSTECH 화학과, Korea

Photoinduced symmetry breaking charge transfer (SBCT) is fascinating process because of its importance in biological system and artificial solar energy harvesting system. 9,9’-Bianthracene (BA) is representative model system of the phenomena as it has simple two anthracene moieties (Figure 1). BA undergo SBCT only in polar solvents. Because it has orthogonal torsional geometry in ground state, charge transfer is unexpected process. Thus, not only solvation but structural change is important in SBCT of BA. However, it is still controversial about whether and how structural motion affects overall process. Time-resolved fluorescence with high time resolution (~50 fs) can be a good strategy to obtain clear dynamics as it contains the information of excited state exclusively. Time-resolved fluorescence and its spectrum of BA in non-polar and polar solvents revealed that reaction time in acetonitrile which has fast solvation time may not be same with solvation time (~400 fs). This results can state the importance of structural change on the process.

References
[1] Vauthey, E. Chemphyschem 2012. 13, 2001-2011.
[2] Takaya, T. Hamaguchi, H., Kuroda, H., Iwata, K. Chem. Phys. Lett. 2004. 399, 210-214.


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