Home      학술발표회 - 초록 상세보기

  학술발표회 - 초록 상세보기

문의 : 초록(, 참가비(


현재 가능한 작업은 아래와 같습니다.

  • 02월 19일 10시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능
대회명 대한화학회 제121회 학술발표회 및 총회
등록일 2018년 3월 19일 20시 13분 34초
접수번호 6662
발표코드 AWARD-1 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간 금 13시 : 30분
발표형식 기념강연
발표분야 KCS - 2018 Academic Excellence Prize
저자 및 공동저자 Dongho Kim
Department of Chemistry, Yonsei University, Korea
제목 A Journey to Molecular Excitonic World
내용 Various synthetic strategies have been developed to devise a variety of artificial molecular arrays in molecular photonics because of their similarities in architecture and subunit structures to the natural photosynthetic light-harvesting complexes. For the molecular arrays to be efficient devices, they should have very regular pigment arrangements which allow a facile light energy or charge flow along the array but do not result in the alteration of individual properties of the constituent pigments leading to the formation of energy or charge sink. In these respects, understanding of photophysical properties of these macromolecular architectures is essential for the rational design of molecular devices for photovoltaic, or optoelectronic applications. Here, we have revealed that the ultrafast excitation energy migration processes in molecular arrays are strongly influenced by the electronic couplings among the constituent molecules as well as the structural rigidity of overall architectures.[1] Our investigations have been extended to H-type aggregated perylenebisimide (PBI)[2] and polythiophene oligomers (linear vs. cyclic)[3]. Not only intermolecular exciton couplings but intramolecular electronic structures have been investigated in a series of expanded porphyrins in conjunction with their molecular structures, the number of π-electrons (Hückel’s [4n+2] rule) as well as their conjugation pathways. Our study demonstrates a relationship between the photophysical properties such as absorption/emission properties, excited state dynamics and the aromaticity of expanded porphyrin systems. Based on these spectroscopic observations, we have found the reversal of aromaticity in the excited states of aromatic/antiaromatic expanded porphyrin congeners.[4] Detailed studies of the modulation events are expected to provide additional fruitful insight into the relationship between (anti)aromaticity and electronic structures. To the extent this proves true, it could have far-reaching practical applications that complement the advances in theoretical understanding that our studies are likely to provide.
- 등록된 그림이 있는경우 그림을 클릭하시면 원본 그림파일을 볼 수 있습니다.
- 최종본을 확인하지 않아 발생된 문제에 대해서는 책임지지 않습니다.
- 미리보기의 그림위치는 임시 위치입니다. 모든 그림파일은 Abstract 하단에 위치하게 됩니다.