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  • 09월 20일 16시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제126회 대한화학회 학술발표회 및 총회 Synthesis of Red Luminescence Carbon dot by Eu3+ and Detect Method

등록일
2020년 9월 2일 21시 06분 38초
접수번호
1275
발표코드
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발표시간
화 10시 : 16분
발표형식
구두발표
발표분야
Analytical Chemistry - Oral Presentation of Young Analytical Chemists II
저자 및
공동저자
Ji won Park, Weekyung Kang1,*
Department of Chemistry, Soongsil university, Korea
1Department of Chemistry, Soongsil University, Korea
Carbon quantum dot (CQD) is a new class of Carbon based fluorescent nano materials (less than 10nm in size), which has recently attracted considerable attention due to their superior properties of stability, bio-compatibility, low toxicity, good water solubility. The luminescent properties of CQD depend on the funtional groups contained on their surfaces. The lanthanide based luminescent nano structures have been recognized for their better chemical and optical properties originating from their electronic structures of f-orbital electrons. Europium has red luminescent fluorescence and sharp peak characteristic at 615nm(5D07F2) of line type red f-f emission. Research for Eu3+-modified CQD has been actively pursued because it is soluble in water and has a wide range of applications : light-emitting diode, organic lgith-emitting diode, bioimaging, sensing and targeting specific DNA structures. In during of CQD synthesis, we tried to combine Eu but the Eu3+ emission is rapidly quenched by water for OH-. Several papers have found that using β-diketone caused complexing with Eu and could prevent Eu from losing a red light. When composing CQD, Eu was added, β-diketone was used to block OH- ions, and the red light from Eu-CQD under UV lamps was finally determined. Also the width peak under UV lamps was measured at a rapid peak of λem=615nm in the expiratory spectrum. By introducing this method, the carbon dots that combine Europium are expected to be used in various filed today.

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