| 학회 |
한국고분자학회 |
| 학술대회 |
2013년 가을 (10/11 ~ 10/12, 창원컨벤션센터) |
| 권호 |
38권 2호 |
| 발표분야 |
의료용 고분자 부문위원회 |
| 제목 |
Synthesis and Characterization of Near IR-emitting CIS/ZnS Quantum Dots for Bio-imaging Applications |
| 초록 |
CuInS2/ZnS quantum dots (CIS/ZnS QDs) have gotten great interests of not only its great optical properties, but also its less toxicity due to non heavy metal content. We synthesize CIS/ZnS quantum dots with a high quantum yield at various emission spectra from visible to NIR region (570-730 nm). The initial Cu/In ratio of the CIS core is changed from 1/4 to 2/1 to control the emission spectrum. The CIS/ZnS QDs are transferred from dichloromethane to an aqueous solution via an emulsification technique with thiol-functionalized six-armed polyethylene glycol (PEG). The multi-armed PEG-coated QD/PEG nanocapsules show excellent dispersion stability in deionized water and exhibit high luminescence efficiency. Preliminary in vitro studies also show that the NIR CIS/ZnS QDs is more suitable for deep tissue imaging as compared to visible light emitting QDs. |
| 저자 |
최형석, 이정유, 남윤성
|
| 소속 |
한국과학기술원 |
| 키워드 |
quantum dots; near-ir; bioimaging; non-heavy metal
|
| E-Mail |
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