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학술발표회초록보기

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  • 09월 23일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제126회 대한화학회 학술발표회 및 총회 HÜCKEL, MÖBIUS, BAIRD AND 3-DIMENSIONAL AROMATICITY IN VARIOUS EXPANDED PORPHYRINS

등록일
2020년 9월 3일 13시 51분 42초
접수번호
0621
발표코드
KCS1-3 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
월 15시 : 00분
발표형식
심포지엄
발표분야
KCS - [International Symposium] The Future is Already Here: Advancing Frontiers in Chemical Research
저자 및
공동저자
Dongho Kim
Department of Chemistry, Yonsei University, Korea
Modification of aromaticity is regarded as one of the most interesting and important research topics in the field of physical organic chemistry. Particularly, porphyrins and their analogs (porphyrinoids) are attractive molecules for exploring various types of aromaticity as most porphyrinoids exhibit circular conjugation pathways in their macrocyclic rings with various molecular structures. Aromaticity in porphyrinoids is significantly affected by structural modification, redox chemistry, NH tautomerization, and electronic states (singlet and triplet excited states). Conversely, aromaticity significantly affects the spectroscopic properties and chemical reactivities of porphyrinoids. Up to date, considerable efforts have been devoted to understanding and controlling the aromaticity and antiaromaticity of porphyrinoids. Thus, a series of porphyrinoids are in the limelight being expected to shed light on this field because they have some advantages to demonstrate the switching of aromaticity; it is possible to control the aromaticity by lowering the temperature, adding and removing the protons of expanded porphyrins, changing the chemical environment, and switching the electronic states (triplet and singlet excited states) by photoexcitation. In this regard, this presentation will address the control of aromaticity in various expanded porphyrins from the spectroscopic point of view with assistance from theoretical calculations.

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