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  • 02월 19일 10시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

대한화학회 제121회 학술발표회 및 총회 Photophysical Properties of closo- and nido-Carborane-Acceptor Compounds and Their Application to Fluoride Sensing

등록일
2018년 1월 22일 20시 12분 11초
접수번호
3235
발표코드
INOR.P-23 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 19일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
Inorganic Chemistry
저자 및
공동저자
NGHIA NGUYEN, SURENDRAN SUJITH, Heechai Lee, AJAY KUMAR, Min Hyung Lee*
Department of Chemistry, University of Ulsan, Korea
A family of neutral and anionic carboranyl derivatives of 1,3,4-oxadiazoles (closo-/nido-OXD) and sulfones (closo-/nido-DPS) were prepared and fully characterized. While the closo-compounds were poorly emissive in THF, the corresponding nido-compounds exhibited intense emission with high quantum yields (ΦPL = 0.30-0.45). The results suggested that the nonemissive nature of closo-compounds can be ascribed to the contribution of o-carborane to the LUMO in the S1 excited state and the intramolecular charge transfer (ICT) state from the nido-carborane to acceptor moieties is responsible for the efficient fluorescence in nido-compounds. The addition of fluoride to the THF solution of closo-OXD and -DPS led to strong emission, allowing turn-on fluorescence detection of fluoride anions. Furthermore, the nido-compounds in solid states exhibited highly efficient ICT emissions (ΦPL = 0.46-0.75), demonstrating that nido-carborane acted as an good donor due to its strong electron-donating properties.

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