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제117회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Synthesis, characterization and properties of bithiophene scaffold based octathiaporphyrin

등록일
2016년 2월 25일 07시 27분 08초
접수번호
1897
발표코드
ORGN.P-406 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 22일 (금요일) 13:00~14:30
발표형식
포스터
발표분야
유기화학
저자 및
공동저자
이창희*, Ranjan Dutta, 고유림
강원대학교 화학과, Korea
Porphyrinoids have attracted wide interest for their intriguing structural features and tunable electronic properties. Considerable variation in the electronic properties of a porphyrin are observed upon replacing all of the pyrroles by furan or thiophene sub-units.1 Recent reports highlight the unexplored facet of the electron-transfer process in expanded thiophene-based pi-conjugated macrocycles. Completely conjugated macrocyclic polythiophene undergoes systematic pi-oxidation to form radical cation or bipolaron species. Recently synthesis and characterization of an air- and water-stable neutral 25-π pentathiophene macrocyclic radical is also described.2 Keeping all these facts in consideration, we have explored bithiophene scaffold for the synthesis of novel thiaporphyrinoid. The bithiophene building block is synthesized in good yield by a modified literature procedure. Acid catalyzed condensation of bithiophene with appropriate aldehyde followed by oxidation with suitable oxidant afforded the desired octathiaporphyrin. The target compound is characterized by standard spectroscopic techniques. Interestingly the radical feature of the octathiaporphyrin is established from a combined evidence of MALDI-TOF, UV-Vis and 1H NMR study. Further spectroscopic and electronic properties of the compound will be presented in details.

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