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  • 03월 02일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제117회 대한화학회 학술발표회, 총회 및 기기전시회 안내 The development of more sensitive detection of cyanide ions in aqueous solutions

등록일
2016년 2월 18일 16시 40분 33초
접수번호
1711
발표코드
ORGN.P-388 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 22일 (금요일) 13:00~14:30
발표형식
포스터
발표분야
유기화학
저자 및
공동저자
이혜리, 이건형1,*
인하대학교 화학화공융합학과, Korea
1인하대학교 화학과, Korea
The displacement methods using the Cu2+-based chemosensing ensembles have been studied for highly selective detection of cyanide ions in aqueous solutions. A stable ensemble with Cu2+ showed little fluorescence by the quenching effect of Cu2+. The addition of cyanide ions removed Cu2+ from the ensemble due to the formation of very stable [Cu(CN)x]n−, resulting in an increase in fluorescence. In the present work, we used the tripeptide (GlyGlyHis) that had been well-known for the amino terminal copper and nickel (ATCUN) binding peptide motif in aqueous solutions. 7-nitro-2,1,3-benzoxadiazole (NBD) and 4-chloro-7-Nitro-2,1,3-benzothiadiazole (SNBD) that have a high quantum yield and absorb visible light were conjugated at the N-terminal of the peptide for the preparing peptide ensembles for cyanide ions by a fluorescent change as well as a colorimetric change. The ensemble of NBD-GGH showed a selective response to cyanide ions among various anions, however, its response time was very slow. To reduce the response time, NBD was replaced with SNBD and characterized the selectivities and response times of the ensembles.

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