| 학회 |
한국공업화학회 |
| 학술대회 |
2018년 가을 (10/31 ~ 11/02, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 |
22권 2호 |
| 발표분야 |
무기재료_포스터 |
| 제목 |
Silica encapsulation of highly luminescent hydrophobic CdSe quantum dots by sonochemical method |
| 초록 |
A method has been developed to incorporate multiple hydrophobic CdSe quantum dots(QDs) into SiO2 beads by a two-step sonochemical process and retain the high photoluminescence(PL) efficiencies of the QDs. In step 1, the QDs were silanized by using partially hydrolyzed tetraethyl orthosilicate(TEOS) via replacing oleic acid(OA) on the surface of QDs. In step 2, these silanized QDs were transferred into aqueous phase in the reverse micelle solution by adding a small amount of water and using ultrasonic irradiation. In orde to analyze the physical properties, Transmission electron microscopy(TEM) were used. The TEM images revealed the dependence of SiO2 thickness on the ultrasonic irradiation time. The optical property was characterized by PL and UV-vis spectroscopy, respectively. As a result, after being encapsulated in SiO2 particles, the PL intensity of QDs increased. Also absorption spectra were observed a slight blue shift corresponding to the PL result. |
| 저자 |
박선아, 김종규, 유정열, 이유로, 정운호, 김은비
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| 소속 |
단국대 |
| 키워드 |
Silica coating; Sonochemical method
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| E-Mail |
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