Seeded Synthesis of CdSe/CdS Rod and Tetrapod Nanocrystals
Abstract
Here, we demonstrate a method for the synthesis of multicomponent nanostructures consisting of CdS and CdSe with rod and tetrapod morphologies. A seeded synthesis strategy is used in which spherical seeds of CdSe are prepared first using a hot-injection technique. By controlling the crystal structure of the seed to be either wurtzite or zinc-blende, the subsequent hot-injection growth of CdS off of the seed results in either a rod-shaped or tetrapod-shaped nanocrystal, respectively. The phase and morphology of the synthesized nanocrystals are confirmed using Xray diffraction and transmission electron microscopy, demonstrating that the nanocrystals are phase-pure and have a consistent morphology. The extinction coefficient and quantum yield of the synthesized nanocrystals are calculated using UV-Vis absorption spectroscopy and photoluminescence spectroscopy. The rods and tetrapods exhibit extinction coefficients and quantum yields that are higher than that of the bare seeds. This synthesis demonstrates the precise arrangement of materials that can be achieved at the nanoscale by using a seeded synthetic approach.
- Authors:
-
- Univ. of California, Berkeley, CA (United States). Dept. of Chemical Engineering; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
- Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
- Univ. of Chicago, IL (United States). Dept. of Chemistry; Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materials
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division; Univ. of California, Berkeley, CA (United States). Dept. of Chemistry
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States); Oak Ridge Associated Univ., Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division
- OSTI Identifier:
- 1628635
- Grant/Contract Number:
- AC02-05CH11231; AC02-06CH11357; AC05-06OR23100
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Visualized Experiments
- Additional Journal Information:
- Journal Issue: 82; Journal ID: ISSN 1940-087X
- Publisher:
- MyJoVE Corp.
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; science & technology; chemistry; nanostructures; synthesis; nanocrystals; seeded rods; tetrapods; nanoheterostructures
Citation Formats
Manthiram, Karthish, Beberwyck, Brandon J., Talapin, Dmitri V., and Alivisatos, A. Paul. Seeded Synthesis of CdSe/CdS Rod and Tetrapod Nanocrystals. United States: N. p., 2013.
Web. doi:10.3791/50731.
Manthiram, Karthish, Beberwyck, Brandon J., Talapin, Dmitri V., & Alivisatos, A. Paul. Seeded Synthesis of CdSe/CdS Rod and Tetrapod Nanocrystals. United States. https://doi.org/10.3791/50731
Manthiram, Karthish, Beberwyck, Brandon J., Talapin, Dmitri V., and Alivisatos, A. Paul. Wed .
"Seeded Synthesis of CdSe/CdS Rod and Tetrapod Nanocrystals". United States. https://doi.org/10.3791/50731. https://www.osti.gov/servlets/purl/1628635.
@article{osti_1628635,
title = {Seeded Synthesis of CdSe/CdS Rod and Tetrapod Nanocrystals},
author = {Manthiram, Karthish and Beberwyck, Brandon J. and Talapin, Dmitri V. and Alivisatos, A. Paul},
abstractNote = {Here, we demonstrate a method for the synthesis of multicomponent nanostructures consisting of CdS and CdSe with rod and tetrapod morphologies. A seeded synthesis strategy is used in which spherical seeds of CdSe are prepared first using a hot-injection technique. By controlling the crystal structure of the seed to be either wurtzite or zinc-blende, the subsequent hot-injection growth of CdS off of the seed results in either a rod-shaped or tetrapod-shaped nanocrystal, respectively. The phase and morphology of the synthesized nanocrystals are confirmed using Xray diffraction and transmission electron microscopy, demonstrating that the nanocrystals are phase-pure and have a consistent morphology. The extinction coefficient and quantum yield of the synthesized nanocrystals are calculated using UV-Vis absorption spectroscopy and photoluminescence spectroscopy. The rods and tetrapods exhibit extinction coefficients and quantum yields that are higher than that of the bare seeds. This synthesis demonstrates the precise arrangement of materials that can be achieved at the nanoscale by using a seeded synthetic approach.},
doi = {10.3791/50731},
journal = {Journal of Visualized Experiments},
number = 82,
volume = ,
place = {United States},
year = {Wed Dec 11 00:00:00 EST 2013},
month = {Wed Dec 11 00:00:00 EST 2013}
}
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