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제124회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Optical sensing of triclosan with Fluorescence of upconversion nanoparticles composed potassium permanganate

등록일
2019년 8월 19일 18시 51분 24초
접수번호
3101
발표코드
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발표시간
금 09시 : 09분
발표형식
구두발표
발표분야
Analytical Chemistry - Oral Presentation of Young Analytical Chemists II
저자 및
공동저자
Seong-Soo Lee, Bui The Huy, Yong-Ill Lee*
Department of Chemistry, Changwon National University, Korea
Triclosan (TCS) have been widely used in a lot of manufacturers as a preservative and a chronically toxic compound that adversely affects biological organisms and human health. In this work, optical features of upconversion nanoparticles (UCNPs) were used to develop a simple and rapid method for detecting TCS. A novel optical sensor of TCS is designed based on carboxylic group functionalized NaYF4:Yb3+/Er3+ UCNPs coated with potassium permanganate (KMnO4). The TCS sensor is able to do the non-autofluorescence, sensitive, and selective sensing through the “turn off-on fluorescence” technique by fluorescence resonance energy transfer (FRET). The FRET between the KMnO4 and UCNPs occurs under an Near-infrared excitation at 980 nm resulted “turn-off fluorescence”. The sensor becomes “turn-on fluorescence” with the presence of TCS because TCS reduces KMnO4. Recovering the fluorescence of UCNPs has ability to detect TCS. The resulting sensor showed an excellent response to TCS with 0.2 μM of a limit of detection in optimized conditions. Keywords: Triclosan, UCNPs, FRET

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