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Investigation of the surface morphology of capped CdSe nanocrystallites by 31 P nuclear magnetic resonance
Abstract
Room temperature 31P magic angle sample spinning (MAS) nuclear magnetic resonance (NMR) is used to study the phosphine chalconide species coordinating the surface of CdSe nanocrystallites. Two surface species are identified: trioctylphosphine oxide (TOPO) and trioctylphosphine selenide (TOPSe). The TOPO coordinates Cd surface sites while trioctylphosphine (TOP) coordinates Se to produce surface TOPSe species. Chemical removal of TOPSe linkages produces CdSe nanocrystallites passivated exclusively with TOPO. A double resonance experiment (31P and 77Se) characterizes the TOPSe species. Quantitative studies indicate coordination to nearly all surface Cd atoms and allows the development of a model for the morphology of an average crystallite surface.
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Citations
Cited by
Synthesis and Characterization of Monodisperse Nanocrystals and Close-Packed Nanocrystal Assemblies
Murray, C. B., Kagan, C. R., & Bawendi, M. G. (2000) · Annual Review of Materials Science · doi:10.1146/annurev.matsci.30.1.545 · Cited by 4,353
Self-citationPerspectives on the Physical Chemistry of Semiconductor Nanocrystals
Alivisatos, A. P. (1996) · The Journal of Physical Chemistry · doi:10.1021/jp9535506 · Cited by 3,595
Luminescent quantum dots for multiplexed biological detection and imaging
Chan, W. C. W., Maxwell, D. J., Gao, X., Bailey, R. E., Han, M., & Nie, S. (2002) · Current Opinion in Biotechnology · doi:10.1016/s0958-1669(02)00282-3 · Cited by 2,068
Liu, F., Zhang, Y., Ding, C., Kobayashi, S., Izuishi, T., Nakazawa, N., Toyoda, T., Ohta, T., Hayase, S., Minemoto, T., et al. (2017) · ACS Nano · doi:10.1021/acsnano.7b05442 · Cited by 960
Anderson, N. C., Hendricks, M. P., Choi, J. J., & Owen, J. S. (2013) · Journal of the American Chemical Society · doi:10.1021/ja4086758 · Cited by 874
Metadata
- Authors
- Becerra, L. R., Murray, C. B., Griffin, R. G., & Bawendi, M. G.
- Venue
- The Journal of Chemical Physics
- Publisher
- AIP Publishing
- Published
- 1994-02-15
- Volume
- 100
- Issue
- 4
- Pages
- 3297-3300
- ISSN
- 0021-9606 (ISSN-L)
- 1089-7690
- OpenAlex
- W2008040230
- Cited by
- 179
- References
- 0
- FWCI
- 8.06
- Type
- journal article
- Language
- en
- Open access
- closed
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- Becerra, L. R., Murray, C. B., Griffin, R. G., & Bawendi, M. G. (1994). Investigation of the surface morphology of capped CdSe nanocrystallites by 31 P nuclear magnetic resonance. The Journal of Chemical Physics. https://doi.org/10.1063/1.466420
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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