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From Cd-Rich to Se-Rich − the Manipulation of CdSe Nanocrystal Surface Stoichiometry
Abstract
We report a protocol for manipulating the surface composition of CdSe nanocrystals. By combining the successive ion layer adhesion and reaction (SILAR) method developed by Li et al. J. Am. Chem. Soc. 2003, 125, 12567 with a phosphine-free selenium precursor, the surface stoichiometry of CdSe can be tunably altered from Cd- to Se-rich. By changing the overall surface stoichiometry, we demonstrate ligand binding to specific surface sites. Tertiary phosphines produce a dramatic enhancement in photoluminescence quantum yield of CdSe particles with Se-rich surfaces but have little effect on Cd-rich surfaces. Unpassivated selenium surface sites are also shown to be a cause of the photobrightening behavior of CdSe nanocrystals.
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Dabbousi, B. O., Rodriguez-Viejo, J., Mikulec, F. V., Heine, J. R., Mattoussi, H., Ober, R., Jensen, K. F., & Bawendi, M. G. (1997) · The Journal of Physical Chemistry B · doi:10.1021/jp971091y · Cited by 4,229
Cited by
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
Size-Dependent Valence and Conduction Band-Edge Energies of Semiconductor Nanocrystals
Jasieniak, J., Califano, M., & Watkins, S. E. (2011) · ACS Nano · doi:10.1021/nn201681s · Cited by 699
Self-citationLeng, M., Yang, Y., Zeng, K., Chen, Z., Tan, Z., Li, S., Li, J., Xu, B., Li, D., Hautzinger, M. P., et al. (2018) · Advanced Functional Materials · doi:10.1002/adfm.201704446 · Cited by 533
Semiconductor Quantum Dots: An Emerging Candidate for CO2 Photoreduction
Wu, H., Li, X., Tung, C., & Wu, L. (2019) · Advanced Materials · doi:10.1002/adma.201900709 · Cited by 486
Jasieniak, J. J., Fortunati, I., Gardin, S., Signorini, R., Bozio, R., Martucci, A., & Mulvaney, P. (2008) · Advanced Materials · doi:10.1002/adma.200701582 · Cited by 95
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Metadata
- Authors
- Jasieniak, J., & Mulvaney, P.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2007-02-20
- Volume
- 129
- Issue
- 10
- Pages
- 2841-2848
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W1967263226
- Cited by
- 379
- References
- 1
- FWCI
- 11.70
- Type
- journal article
- Language
- en
- Open access
- closed
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- Jasieniak, J., & Mulvaney, P. (2007). From Cd-Rich to Se-Rich − the Manipulation of CdSe Nanocrystal Surface Stoichiometry. Journal of the American Chemical Society. https://doi.org/10.1021/ja066205a
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
