Optical and electrical measurement of energy transfer between nanocrystalline quantum dots and photosystem I

Hyeson Jung; Galina Gulis; Subhadra Gupta; Kevin Redding; David J. Gosztola; Gary P. Wiederrecht; Michael A. Stroscio; Mitra Dutta

doi:10.1021/jp102291e

Optical and electrical measurement of energy transfer between nanocrystalline quantum dots and photosystem I

Hyeson Jung, Galina Gulis, Subhadra Gupta, Kevin Redding, David J. Gosztola, Gary P. Wiederrecht, Michael A. Stroscio, Mitra Dutta

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

16 Scopus citations

Abstract

In the natural photosynthesis process, light harvesting complexes (LHCs) absorb light and pass excitation energy to photosystem I (PSI) and photosystem II (PSII). In this study, we have used nanocrystalline quantum dots (NQDs) as an artificial LHC by integrating them with PSI to extend their spectral range. We have performed photoluminescence (PL) and ultrafast time-resolved absorption measurements to investigate this process. Our PL experiments showed that emission from the NQDs is quenched, and the fluorescence from PSI is enhanced. Transient absorption and bleaching results can be explained by fluorescence resonance energy transfer (FRET) from the NQDs to the PSI. This nonradiative energy transfer occurs in ∼6 ps. Current - voltage (I-V) measurements on the composite NQD-PSI samples demonstrate a clear photoresponse.

Original language	English (US)
Pages (from-to)	14544-14549
Number of pages	6
Journal	Journal of Physical Chemistry B
Volume	114
Issue number	45
DOIs	https://doi.org/10.1021/jp102291e
State	Published - Dec 8 2010
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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10.1021/jp102291e

Cite this

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title = "Optical and electrical measurement of energy transfer between nanocrystalline quantum dots and photosystem I",

abstract = "In the natural photosynthesis process, light harvesting complexes (LHCs) absorb light and pass excitation energy to photosystem I (PSI) and photosystem II (PSII). In this study, we have used nanocrystalline quantum dots (NQDs) as an artificial LHC by integrating them with PSI to extend their spectral range. We have performed photoluminescence (PL) and ultrafast time-resolved absorption measurements to investigate this process. Our PL experiments showed that emission from the NQDs is quenched, and the fluorescence from PSI is enhanced. Transient absorption and bleaching results can be explained by fluorescence resonance energy transfer (FRET) from the NQDs to the PSI. This nonradiative energy transfer occurs in ∼6 ps. Current - voltage (I-V) measurements on the composite NQD-PSI samples demonstrate a clear photoresponse.",

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T1 - Optical and electrical measurement of energy transfer between nanocrystalline quantum dots and photosystem I

AU - Jung, Hyeson

AU - Gulis, Galina

AU - Gupta, Subhadra

AU - Redding, Kevin

AU - Gosztola, David J.

AU - Wiederrecht, Gary P.

AU - Stroscio, Michael A.

AU - Dutta, Mitra

PY - 2010/12/8

Y1 - 2010/12/8

N2 - In the natural photosynthesis process, light harvesting complexes (LHCs) absorb light and pass excitation energy to photosystem I (PSI) and photosystem II (PSII). In this study, we have used nanocrystalline quantum dots (NQDs) as an artificial LHC by integrating them with PSI to extend their spectral range. We have performed photoluminescence (PL) and ultrafast time-resolved absorption measurements to investigate this process. Our PL experiments showed that emission from the NQDs is quenched, and the fluorescence from PSI is enhanced. Transient absorption and bleaching results can be explained by fluorescence resonance energy transfer (FRET) from the NQDs to the PSI. This nonradiative energy transfer occurs in ∼6 ps. Current - voltage (I-V) measurements on the composite NQD-PSI samples demonstrate a clear photoresponse.

AB - In the natural photosynthesis process, light harvesting complexes (LHCs) absorb light and pass excitation energy to photosystem I (PSI) and photosystem II (PSII). In this study, we have used nanocrystalline quantum dots (NQDs) as an artificial LHC by integrating them with PSI to extend their spectral range. We have performed photoluminescence (PL) and ultrafast time-resolved absorption measurements to investigate this process. Our PL experiments showed that emission from the NQDs is quenched, and the fluorescence from PSI is enhanced. Transient absorption and bleaching results can be explained by fluorescence resonance energy transfer (FRET) from the NQDs to the PSI. This nonradiative energy transfer occurs in ∼6 ps. Current - voltage (I-V) measurements on the composite NQD-PSI samples demonstrate a clear photoresponse.

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Optical and electrical measurement of energy transfer between nanocrystalline quantum dots and photosystem I

Abstract

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