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Advanced Materials

Growth of CdSe Quantum Rods and Multipods Seeded by Noble-Metal Nanoparticles

Authors

  • K.-T. Yong,

    1. Institute for Lasers, Photonics, and Biophotonics, University at Buffalo, The State University of New York, Buffalo, NY 14260-4200, USA
    2. Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260-4200, USA
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  • Y. Sahoo,

    1. Institute for Lasers, Photonics, and Biophotonics, University at Buffalo, The State University of New York, Buffalo, NY 14260-4200, USA
    2. Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260-4200, USA
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  • M. T. Swihart,

    1. Institute for Lasers, Photonics, and Biophotonics, University at Buffalo, The State University of New York, Buffalo, NY 14260-4200, USA
    2. Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260-4200, USA
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  • P. N. Prasad

    1. Institute for Lasers, Photonics, and Biophotonics, University at Buffalo, The State University of New York, Buffalo, NY 14260-4200, USA
    2. Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260-4200, USA
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  • This work was supported in part by a Defense University Research Initiative on Nanotechnology grant, through the Chemistry and Life Sciences Directorate of the Air Force Office of Scientific Research and by an NSF grant from the Solid State and Polymer Chemistry Program of the Division of Materials Research. We also thank the staff at the National Center for Electron Microscopy for assistance with the HRTEM, and Paul Alivisatos and his group for helpful discussions. Supporting Information is available online from Wiley InterScience or from the author.

Abstract

CdSe quantum rods are prepared at much milder conditions than previously reported, using noble-metal seed particles to initiate growth. The CdSe nanocrystals initially form as multipods that cleave to yield freestanding quantum rods (see figure) with high photoluminescence quantum yields. This study provides a new direction in developing facile syntheses of semiconductor NCs with nonspherical morphology, thereby making available new building blocks for nanotechnology.

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