Controlled In Situ PbSe Quantum Dot Growth around Single-Walled Carbon Nanotubes: A Noncovalent PbSe-SWNT Hybrid Structure

We developed a simple method of synthesizing noncovalently linked hybrids of PbSe quantum dots (QDs) and single-walled carbon nanotubes (SWNTs). The PbSe QDs grow around the SWNTs without any linker molecule or chemical modification of the SWNTs. We are able to control the size and shape of the QDs...

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Published in:Chemistry of materials 2013-07, Vol.25 (13), p.2663-2669
Main Authors: Schornbaum, Julia, Winter, Benjamin, Schießl, Stefan P, Butz, Benjamin, Spiecker, Erdmann, Zaumseil, Jana
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Language:English
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cited_by cdi_FETCH-LOGICAL-a259t-d1b20966ccd3e94c7d026606bb23b3d72298494d2336a4c9c0e4bdd1604fec063
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container_end_page 2669
container_issue 13
container_start_page 2663
container_title Chemistry of materials
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creator Schornbaum, Julia
Winter, Benjamin
Schießl, Stefan P
Butz, Benjamin
Spiecker, Erdmann
Zaumseil, Jana
description We developed a simple method of synthesizing noncovalently linked hybrids of PbSe quantum dots (QDs) and single-walled carbon nanotubes (SWNTs). The PbSe QDs grow around the SWNTs without any linker molecule or chemical modification of the SWNTs. We are able to control the size and shape of the QDs attached to the SWNTs by varying the synthesis conditions and elucidate the three-dimensional (3D) morphology and atomic structure of the half-ring-shaped PbSe QDs bonded to the SWNTs using scanning transmission electron microscopy (STEM) tomography and high-resolution transmission electron microscopy (HRTEM). The PbSe QDs not only assemble on the SWNT bundles, but they actually grow around them. The growth of the PbSe QDs around SWNT sidewalls is favored over the growth of spherical particles in solution, probably due to dipole stabilization by the large π-electron system of the SWNTs.
doi_str_mv 10.1021/cm401202t
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title Controlled In Situ PbSe Quantum Dot Growth around Single-Walled Carbon Nanotubes: A Noncovalent PbSe-SWNT Hybrid Structure
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