Efficient excitation transfer from polymer to nanocrystals

Tung Wah Frederick Chang; Sergei Musikhin; Ludmila Bakueva; Larissa Levina; Margaret A. Hines; Paul W. Cyr; Edward H. Sargent

doi:10.1063/1.1755414

Efficient excitation transfer from polymer to nanocrystals

Tung Wah Frederick Chang^*, Sergei Musikhin, Ludmila Bakueva, Larissa Levina, Margaret A. Hines, Paul W. Cyr, Edward H. Sargent

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

93 Scopus citations

Abstract

The efficiency of net transfer of excitation in the polymer to the nanocrystals (NC) was investigated using the normalized photoluminescence excitation spectrum Q(λ) of NCs. The PbS nanocrystals embedded in MEH-PPV (poly[2-methoxy-5-(2́-ethylhexyloxy-p-phenylenevinylene)]) polymer were studied. The excitation transfer efficiency was found to be about 20%, when the composites were made using as-synthesized PbS nanocrystals capped by oleate ligands. It was shown that long insulating ligands did not impede the transfer of excitations from polymers to NCs. The results show that the transfer efficiency increases as the ligand chain length decreases.

Original language	English (US)
Pages (from-to)	4295-4297
Number of pages	3
Journal	Applied Physics Letters
Volume	84
Issue number	21
DOIs	https://doi.org/10.1063/1.1755414
State	Published - May 24 2004

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Efficient excitation transfer from polymer to nanocrystals",

abstract = "The efficiency of net transfer of excitation in the polymer to the nanocrystals (NC) was investigated using the normalized photoluminescence excitation spectrum Q(λ) of NCs. The PbS nanocrystals embedded in MEH-PPV (poly[2-methoxy-5-({\'2}-ethylhexyloxy-p-phenylenevinylene)]) polymer were studied. The excitation transfer efficiency was found to be about 20%, when the composites were made using as-synthesized PbS nanocrystals capped by oleate ligands. It was shown that long insulating ligands did not impede the transfer of excitations from polymers to NCs. The results show that the transfer efficiency increases as the ligand chain length decreases.",

author = "Chang, {Tung Wah Frederick} and Sergei Musikhin and Ludmila Bakueva and Larissa Levina and Hines, {Margaret A.} and Cyr, {Paul W.} and Sargent, {Edward H.}",

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T1 - Efficient excitation transfer from polymer to nanocrystals

AU - Chang, Tung Wah Frederick

AU - Musikhin, Sergei

AU - Bakueva, Ludmila

AU - Levina, Larissa

AU - Hines, Margaret A.

AU - Cyr, Paul W.

AU - Sargent, Edward H.

PY - 2004/5/24

Y1 - 2004/5/24

N2 - The efficiency of net transfer of excitation in the polymer to the nanocrystals (NC) was investigated using the normalized photoluminescence excitation spectrum Q(λ) of NCs. The PbS nanocrystals embedded in MEH-PPV (poly[2-methoxy-5-(2́-ethylhexyloxy-p-phenylenevinylene)]) polymer were studied. The excitation transfer efficiency was found to be about 20%, when the composites were made using as-synthesized PbS nanocrystals capped by oleate ligands. It was shown that long insulating ligands did not impede the transfer of excitations from polymers to NCs. The results show that the transfer efficiency increases as the ligand chain length decreases.

AB - The efficiency of net transfer of excitation in the polymer to the nanocrystals (NC) was investigated using the normalized photoluminescence excitation spectrum Q(λ) of NCs. The PbS nanocrystals embedded in MEH-PPV (poly[2-methoxy-5-(2́-ethylhexyloxy-p-phenylenevinylene)]) polymer were studied. The excitation transfer efficiency was found to be about 20%, when the composites were made using as-synthesized PbS nanocrystals capped by oleate ligands. It was shown that long insulating ligands did not impede the transfer of excitations from polymers to NCs. The results show that the transfer efficiency increases as the ligand chain length decreases.

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Efficient excitation transfer from polymer to nanocrystals

Abstract

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