Ultrafast dynamics of förster resonance energy transfer and photo-induced charge transfer in cationic polyfluorene/dye-labeled DNA complex

Kwangseuk Kyhm; Inhong Kim; Mijeong Kang; Han Young Woo

doi:10.1166/jnn.2012.6633

Ultrafast dynamics of förster resonance energy transfer and photo-induced charge transfer in cationic polyfluorene/dye-labeled DNA complex

Kwangseuk Kyhm, Inhong Kim, Mijeong Kang, Han Young Woo

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

10 Citations (Scopus)

Abstract

The ultrafast dynamics of Förster resonance energy transfer (FRET) and photo-induced charge transfer (PCT) has been investigated in an electrostatic complex of a fluorescein-labeled singlestranded DNA (as a FRET acceptor) and a cationic polyfluorene copolymer (as a FRET donor). The donor-acceptor intermolecular distance and total energy transfer efficiency are determined for a polymer/DNA complex with two different counter-ions and compared with those obtained using a theoretical model by considering the competition between FRET and PCT processes. The maximum total energy transfer efficiency (0.47) was estimated at the optimum donor-acceptor intermolecular distance of 39.6 Å.

Original language	English
Pages (from-to)	7733-7738
Number of pages	6
Journal	Journal of Nanoscience and Nanotechnology
Volume	12
Issue number	10
DOIs	https://doi.org/10.1166/jnn.2012.6633
Publication status	Published - 2012 Oct
Externally published	Yes

Keywords

Conjugated Polymers
Exciton
Förster Resonance Energy Transfer (FRET)
Optical In-Situ DNA Detection
Photo-Induced Charge Transfer
Time-Resolved Fluorescence

ASJC Scopus subject areas

Bioengineering
Chemistry(all)
Biomedical Engineering
Materials Science(all)
Condensed Matter Physics

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10.1166/jnn.2012.6633

Cite this

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title = "Ultrafast dynamics of f{\"o}rster resonance energy transfer and photo-induced charge transfer in cationic polyfluorene/dye-labeled DNA complex",

abstract = "The ultrafast dynamics of F{\"o}rster resonance energy transfer (FRET) and photo-induced charge transfer (PCT) has been investigated in an electrostatic complex of a fluorescein-labeled singlestranded DNA (as a FRET acceptor) and a cationic polyfluorene copolymer (as a FRET donor). The donor-acceptor intermolecular distance and total energy transfer efficiency are determined for a polymer/DNA complex with two different counter-ions and compared with those obtained using a theoretical model by considering the competition between FRET and PCT processes. The maximum total energy transfer efficiency (0.47) was estimated at the optimum donor-acceptor intermolecular distance of 39.6 {\AA}.",

keywords = "Conjugated Polymers, Exciton, F{\"o}rster Resonance Energy Transfer (FRET), Optical In-Situ DNA Detection, Photo-Induced Charge Transfer, Time-Resolved Fluorescence",

author = "Kwangseuk Kyhm and Inhong Kim and Mijeong Kang and Woo, {Han Young}",

year = "2012",

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doi = "10.1166/jnn.2012.6633",

language = "English",

volume = "12",

pages = "7733--7738",

journal = "Journal of Nanoscience and Nanotechnology",

issn = "1533-4880",

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T1 - Ultrafast dynamics of förster resonance energy transfer and photo-induced charge transfer in cationic polyfluorene/dye-labeled DNA complex

AU - Kyhm, Kwangseuk

AU - Kim, Inhong

AU - Kang, Mijeong

AU - Woo, Han Young

PY - 2012/10

Y1 - 2012/10

N2 - The ultrafast dynamics of Förster resonance energy transfer (FRET) and photo-induced charge transfer (PCT) has been investigated in an electrostatic complex of a fluorescein-labeled singlestranded DNA (as a FRET acceptor) and a cationic polyfluorene copolymer (as a FRET donor). The donor-acceptor intermolecular distance and total energy transfer efficiency are determined for a polymer/DNA complex with two different counter-ions and compared with those obtained using a theoretical model by considering the competition between FRET and PCT processes. The maximum total energy transfer efficiency (0.47) was estimated at the optimum donor-acceptor intermolecular distance of 39.6 Å.

AB - The ultrafast dynamics of Förster resonance energy transfer (FRET) and photo-induced charge transfer (PCT) has been investigated in an electrostatic complex of a fluorescein-labeled singlestranded DNA (as a FRET acceptor) and a cationic polyfluorene copolymer (as a FRET donor). The donor-acceptor intermolecular distance and total energy transfer efficiency are determined for a polymer/DNA complex with two different counter-ions and compared with those obtained using a theoretical model by considering the competition between FRET and PCT processes. The maximum total energy transfer efficiency (0.47) was estimated at the optimum donor-acceptor intermolecular distance of 39.6 Å.

KW - Conjugated Polymers

KW - Exciton

KW - Förster Resonance Energy Transfer (FRET)

KW - Optical In-Situ DNA Detection

KW - Photo-Induced Charge Transfer

KW - Time-Resolved Fluorescence

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DO - 10.1166/jnn.2012.6633

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AN - SCOPUS:84870768474

SN - 1533-4880

VL - 12

SP - 7733

EP - 7738

JO - Journal of Nanoscience and Nanotechnology

JF - Journal of Nanoscience and Nanotechnology

IS - 10

ER -

Ultrafast dynamics of förster resonance energy transfer and photo-induced charge transfer in cationic polyfluorene/dye-labeled DNA complex

Abstract

Keywords

ASJC Scopus subject areas

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