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Single Quantum Dots in Silica Spheres by Microemulsion Synthesis
Abstract
A new method for the preparation of single quantum dots (QDs) in silica spheres has been developed. The work involves an oil-in-water microemulsion system with cyclohexane as the “oil” phase and Synperonic NP-5 as the surfactant. Reaction parameters such as reactant concentrations, time, and temperature were studied. The method resulted in smooth silica nanoparticles of good monodispersity and high luminescence with single QDs in the center. Elucidating the coating mechanism was attempted. Possible mechanisms include a phase transfer by ligand exchange and a surfactant-supported mechanism. In contrast to sol−gel based methods, this is a straightforward, simple “one-pot” synthesis for such particles. The resulting nanoparticles could be used for further silica growth and assembly of photonic structures, for biolabeling, or for other applications.
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Cited by
Recent Progress on Silica Coating of Nanoparticles and Related Nanomaterials
Guerrero‐Martínez, A., Pérez‐Juste, J., & Liz‐Marzán, L. M. (2010) · Advanced Materials · doi:10.1002/adma.200901263 · Cited by 771
Optical molecular sensing with semiconductor quantum dots (QDs)
Freeman, R., & Willner, I. (2012) · Chemical Society Reviews · doi:10.1039/c2cs15357b · Cited by 485
Application of semiconductor quantum dots in bioimaging and biosensing
Martynenko, I. V., Litvin, A. P., Purcell-Milton, F., Baranov, A. V., Fedorov, A. V., & Gun'ko, Y. K. (2017) · Journal of Materials Chemistry B · doi:10.1039/c7tb01425b · Cited by 382
Quantum‐Dot‐Encoded Silica Nanospheres for Nucleic Acid Hybridization
Pillai, P. P., Reisewitz, S., Schroeder, H., & Niemeyer, C. M. (2010) · Small · doi:10.1002/smll.201000949 · Cited by 25
Metadata
- Authors
- Darbandi, M., Thomann, R., & Nann, T.
- Venue
- Chemistry of Materials
- Publisher
- American Chemical Society (ACS)
- Published
- 2005-10-15
- Volume
- 17
- Issue
- 23
- Pages
- 5720-5725
- ISSN
- 0897-4756 (ISSN-L)
- 1520-5002
- OpenAlex
- W2005986455
- Cited by
- 388
- References
- 0
- FWCI
- 10.08
- Type
- journal article
- Language
- en
- Open access
- closed
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- Darbandi, M., Thomann, R., & Nann, T. (2005). Single Quantum Dots in Silica Spheres by Microemulsion Synthesis. Chemistry of Materials. https://doi.org/10.1021/cm051467h
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