| 학회 |
한국공업화학회 |
| 학술대회 |
2018년 봄 (05/02 ~ 05/04, 대구 엑스코(EXCO)) |
| 권호 |
22권 1호 |
| 발표분야 |
무기재료_포스터 |
| 제목 |
Silica encapsulation of highly luminescent hydrophobic quantum dots by stőber method |
| 초록 |
Hydrophobic oleic acid-capped CdTe quantum dots(QDs) were assembled in SiO2 particles through a silanization technique. Ligand exchange (3-aminopropyltriethoxysilane (APS) instead of oleic acid) occurred via the connection of amino groups and QDs when APS was added in he toluene solution of the QDs. After being silanized using APS, partially hydrolyzed tetraethyl orthosilicate(TEOS) was attached to the surface of the silanized QDs. The hydrophobic CdTe QDs were then transferred from toluene phase to water phase by the hydrolysis of TEOS through the addition of ethanol, ammonia, and water. Further hydrolysis and condensation of the TEOS and APS causes them to form assemblies in the water phase. After being encapsulated in SiO2 particles, the PL intensity of QDs increased. Because of the resulting SiO2 particles encapsulating multiple hydrophobic CdTe QDs and having a functional surface (amino group), they are applicable to bio-probes. |
| 저자 |
박선아, 유정열, 이유로, 정운호, 김은비, 김우석, 김종규
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| 소속 |
단국대 |
| 키워드 |
CdTe; quantum dot; silanization; silica; ligand exchange
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| E-Mail |
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