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학술발표회초록보기

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

제109회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Improved Photoluminescence of Silicon nanoparticles by FRET

등록일
2012년 3월 2일 15시 52분 15초
접수번호
1573
발표코드
INOR.P-269 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 25일 (수요일) 18:00~21:00
발표형식
포스터
발표분야
무기화학
저자 및
공동저자
조보민, 손홍래
조선대학교 화학과, Korea
Photoluminescent silicon nanoparticles were prepared by an electrochemical etch of n-type silicon under the illumination with a 300 W tungsten filament bulb for the duration of etch. The red photoluminescence emitting at 650 nm with an excitation wavelength of 450 nm is due to the quantum confinement of silicon nanocrystallites in porous silicon (PSi). Surface-oxidized red luminescent PSi was obtained by an electrochemical treatment of fresh PSi with the current of 150 mA for 600 seconds in water and sodium chloride. Prepared PSi was sonicated and centrifuged in toluene solution to obtain photoluminescence silicon quantum dots. Dichlorotetraphenylsilole exhibiting an emission band at 530 nm was reacted with silicon quantum dot to give a silole-derivatized silicon quantum dots. Optical characteristic of silole-derivatized silicon quantum dots were investigated by UV-vis and fluorescence spectrometer. The emission efficiency of fluorescence for the silole-derivatized silicon nanoparticles was increased by about 2.5 times due to FRET from silole moiety to silicon quantum dots.

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