IN-SITU ENCAPSULATION OF QUANTUM DOTS INTO POLYMER MICROSPHERES
SCIE
SCOPUS
- Title
- IN-SITU ENCAPSULATION OF QUANTUM DOTS INTO POLYMER MICROSPHERES
- Authors
- Sheng, WC; Kim, S; Lee, J; Kim, SW; Jensen, K; Bawendi, MG
- Date Issued
- 2006-04-11
- Publisher
- AMER CHEMICAL SOC
- Abstract
- We have incorporated fluorescent quantum dots (QDs) into polystyrene microspheres using functionalized oligomeric phosphine (OP) ligands. We find that a uniform distribution of quantum dots is loaded inside each polymer bead. Some local close-packing of quantum dots in the beads is attributed to the self-polymerization of the functionalized ligands. The presence of quantum dots disturbs the nucleation and growth processes during the formation of polymer microspheres and results in a wider size distribution of the quantum dot-embedded polystyrene beads than for the control without dots. The change in quantum efficiency of the quantum dots before (similar to 20%) and after (12%) loading into the beads substantiates the protection of oligomeric phosphine ligands yet indicates that the properties of these quantum dots are still affected during processing.
- Keywords
- NANOCRYSTALS; BIOMOLECULES; LUMINESCENT; POLYSTYRENE; MICROBEADS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/29057
- DOI
- 10.1021/LA051973L
- ISSN
- 0743-7463
- Article Type
- Article
- Citation
- LANGMUIR, vol. 22, no. 8, page. 3782 - 3790, 2006-04-11
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