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  • 09월 01일 18시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제118회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Fungal Derived High Photoluminescent Carbon Quantum Dots: Ultrasensitive Detection of Hg2+ Ions and Splendid Photoinduced Bactericidal Activity

등록일
2016년 9월 1일 15시 30분 44초
접수번호
2418
발표코드
INOR.P-263 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 13일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
무기화학
저자 및
공동저자
SADA VENKATESWARLU, 박경세1, 윤민영*
가천대학교 글로벌캠퍼스 나노화학과, Korea
1군산대학교 화학과, Korea

Among all carbon allotropes, in recent years, carbon quantum dots (CQDs) continue to garner research attention due to their innumerable applications, because of their fascinating features, including superior water solubility, low cost, and unique excitation-dependent fluorescence. Most of the preparation approaches usually possess shortcomings such as the expensive and/or hazardous solvents, complex procedures, harsh reaction conditions, which restricts the availability of large-scale production of the CQDs for their potential applications. In this juncture, we synthesized amenable and oyster mushrooms (Pleurotus) mediated highly photo luminescent and biocompatible carbon quantum dots (CQDs). The resulting mushroom carbon quantum (MCQDs) shows high quantum yield (25 %) and exhibits stable blue fluorescence. MCQDs were applied as a effective fluorescent probe for label free sensitive detection of Hg2+ ions, the limits of detection was 4.13 nM. Functionalization of MCQDs with a dihydrolipoicacid acid moiety allows ultra-sensitivity for Hg2+ sensing as well as selectivity with the detection limit as low as 17.18 pM. In addition, the new fungal based MCQDs not only can be used for a rapid, reliable and ultra-sensitive detection of Hg2+ ions in real water samples, but also can act as an excellent labelling probe for bacteria with an effective photo-induced bactericidal function towards E.coli. The plausible results reveal that the MCQDs were highly effective in bacteria killing under visible light irradiation. These sustainable and affordable carbon materials are potentially compatible for monitoring toxic metals, and useful for visible light responsible bactericidal probe.


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