Ki-Se Kim - Academia.edu (original) (raw)
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Papers by Ki-Se Kim
Clean Technology, Jun 30, 2014
Macromolecular Research, Feb 1, 2018
Macromolecular Research, May 30, 2019
Thin Solid Films, Sep 1, 2011
Soft Matter, 2009
Since fluorescence resonance energy transfer (FRET) between fluorophores strongly depends on the ... more Since fluorescence resonance energy transfer (FRET) between fluorophores strongly depends on the distance between and position of donors and acceptors at the nanometer scale, the accurate organization of multiple fluorophores in a specific arrangement plays a critical role in controlling their energy-transferring processes. Herein, we highlight our recent development on the utilization of nanostructures of diblock copolymer micelles for nanoscale arrangement of multiple fluorophores including quantum dots (QDs) to adjust FRET for tuning emissions from a single emitting layer.
Journal of Nanoscience and Nanotechnology, Oct 1, 2010
Macromolecular Chemistry and Physics, Oct 19, 2010
Macromolecular Rapid Communications, Jul 3, 2009
ACS Nano, May 31, 2012
Recently, it has been noticed that surface plasmon resonance of metal nanoparticles can alter the... more Recently, it has been noticed that surface plasmon resonance of metal nanoparticles can alter the intrinsic properties of nearby fluorophores. Field enhancement and radiative decay engineering are major principles for understanding a number of experimental observations such as enhanced and quenched emission of fluorophores in the vicinity of metal nanoparticles. At the same time, there are apparent similarities between surface-plasmon-coupled fluorescence and fluorescence resonance energy transfer (FRET), as both are near-field through-space interactions. From this perspective, we hypothesize that donor-acceptor interaction in the FRET can be altered by metal nanoparticles. Our approach is based on diblock copolymer micelles, which have been widely applied for nanoscale arrangement of functionalities. By applying self-assembling techniques of copolymer micelles to organize the spatial location of semiconductor quantum dots, fluorescent dyes, and metal nanoparticles, the FRET in hybrid assemblies can be switched off by plasmonic effects.
Macromolecular Chemistry and Physics, Jun 7, 2018
Macromolecular Chemistry and Physics, Aug 24, 2011
Macromolecular Chemistry and Physics, 2018
Fluorescence resonance energy transfer (FRET) has attracted a great deal of attention in chemical... more Fluorescence resonance energy transfer (FRET) has attracted a great deal of attention in chemical and biological analysis because fluorescence intensity of given fluorophores (acceptor) can be amplified by placing energy‐harvesting molecules (donor) in their vicinity. However, FRET‐based fluorescence has a certain limitation in terms of signal amplification because it inherently relies on the intrinsic properties of donors and acceptors as well as the donor‐to‐acceptor distance. To overcome this limitation, metal nanoparticles (NPs) are introduced to a FRET system to engineer the dipole–dipole interaction in FRET using the localized surface plasmon resonance (LSPR) of metal NPs. A 63.1‐fold fluorescence enhancement is observed using an LSPR‐coupled FRET process based on layer‐by‐layer (LbL) assemblies composed of a pair of donor–acceptor fluorescent dyes and metal NPs. It is discovered that by a) optimizing LSPR‐coupled excitation enhancement in donors as well as emission enhancemen...
Macromolecular Research, 2018
Nanoscale, Jan 11, 2016
Photonic crystals can be represented by periodic nanostructures with alternating refractive indic... more Photonic crystals can be represented by periodic nanostructures with alternating refractive indices, which create artificial stop bands with the appearance of colors. In this regard, nanodomains of block copolymers and the corresponding structural colors have been intensively studied in the past. However, the practical application of photonic crystals of block copolymers has been limited to a large degree because of the presence of large defects and grain boundaries in the nanodomains of block copolymers. The present study focuses on the alternative opportunity of short-range ordered nanodomains of block copolymers for fluorescence enhancement, which also has a direct relevance to the development of fluorescence sensors or detectors. The enhancement mechanism was found to be interconnected with the excitation process rather than the alternation of the decay kinetics. In particular, we demonstrate that randomly oriented, but regular grains of lamellae of polystyrene-block-polyisopren...
Soft Matter, 2009
Since fluorescence resonance energy transfer (FRET) between fluorophores strongly depends on the ... more Since fluorescence resonance energy transfer (FRET) between fluorophores strongly depends on the distance between and position of donors and acceptors at the nanometer scale, the accurate organization of multiple fluorophores in a specific arrangement plays a critical role in controlling their energy-transferring processes. Herein, we highlight our recent development on the utilization of nanostructures of diblock copolymer micelles for nanoscale arrangement of multiple fluorophores including quantum dots (QDs) to adjust FRET for tuning emissions from a single emitting layer.
Macromolecular Chemistry and Physics, 2011
Clean Technology, Jun 30, 2014
Macromolecular Research, Feb 1, 2018
Macromolecular Research, May 30, 2019
Thin Solid Films, Sep 1, 2011
Soft Matter, 2009
Since fluorescence resonance energy transfer (FRET) between fluorophores strongly depends on the ... more Since fluorescence resonance energy transfer (FRET) between fluorophores strongly depends on the distance between and position of donors and acceptors at the nanometer scale, the accurate organization of multiple fluorophores in a specific arrangement plays a critical role in controlling their energy-transferring processes. Herein, we highlight our recent development on the utilization of nanostructures of diblock copolymer micelles for nanoscale arrangement of multiple fluorophores including quantum dots (QDs) to adjust FRET for tuning emissions from a single emitting layer.
Journal of Nanoscience and Nanotechnology, Oct 1, 2010
Macromolecular Chemistry and Physics, Oct 19, 2010
Macromolecular Rapid Communications, Jul 3, 2009
ACS Nano, May 31, 2012
Recently, it has been noticed that surface plasmon resonance of metal nanoparticles can alter the... more Recently, it has been noticed that surface plasmon resonance of metal nanoparticles can alter the intrinsic properties of nearby fluorophores. Field enhancement and radiative decay engineering are major principles for understanding a number of experimental observations such as enhanced and quenched emission of fluorophores in the vicinity of metal nanoparticles. At the same time, there are apparent similarities between surface-plasmon-coupled fluorescence and fluorescence resonance energy transfer (FRET), as both are near-field through-space interactions. From this perspective, we hypothesize that donor-acceptor interaction in the FRET can be altered by metal nanoparticles. Our approach is based on diblock copolymer micelles, which have been widely applied for nanoscale arrangement of functionalities. By applying self-assembling techniques of copolymer micelles to organize the spatial location of semiconductor quantum dots, fluorescent dyes, and metal nanoparticles, the FRET in hybrid assemblies can be switched off by plasmonic effects.
Macromolecular Chemistry and Physics, Jun 7, 2018
Macromolecular Chemistry and Physics, Aug 24, 2011
Macromolecular Chemistry and Physics, 2018
Fluorescence resonance energy transfer (FRET) has attracted a great deal of attention in chemical... more Fluorescence resonance energy transfer (FRET) has attracted a great deal of attention in chemical and biological analysis because fluorescence intensity of given fluorophores (acceptor) can be amplified by placing energy‐harvesting molecules (donor) in their vicinity. However, FRET‐based fluorescence has a certain limitation in terms of signal amplification because it inherently relies on the intrinsic properties of donors and acceptors as well as the donor‐to‐acceptor distance. To overcome this limitation, metal nanoparticles (NPs) are introduced to a FRET system to engineer the dipole–dipole interaction in FRET using the localized surface plasmon resonance (LSPR) of metal NPs. A 63.1‐fold fluorescence enhancement is observed using an LSPR‐coupled FRET process based on layer‐by‐layer (LbL) assemblies composed of a pair of donor–acceptor fluorescent dyes and metal NPs. It is discovered that by a) optimizing LSPR‐coupled excitation enhancement in donors as well as emission enhancemen...
Macromolecular Research, 2018
Nanoscale, Jan 11, 2016
Photonic crystals can be represented by periodic nanostructures with alternating refractive indic... more Photonic crystals can be represented by periodic nanostructures with alternating refractive indices, which create artificial stop bands with the appearance of colors. In this regard, nanodomains of block copolymers and the corresponding structural colors have been intensively studied in the past. However, the practical application of photonic crystals of block copolymers has been limited to a large degree because of the presence of large defects and grain boundaries in the nanodomains of block copolymers. The present study focuses on the alternative opportunity of short-range ordered nanodomains of block copolymers for fluorescence enhancement, which also has a direct relevance to the development of fluorescence sensors or detectors. The enhancement mechanism was found to be interconnected with the excitation process rather than the alternation of the decay kinetics. In particular, we demonstrate that randomly oriented, but regular grains of lamellae of polystyrene-block-polyisopren...
Soft Matter, 2009
Since fluorescence resonance energy transfer (FRET) between fluorophores strongly depends on the ... more Since fluorescence resonance energy transfer (FRET) between fluorophores strongly depends on the distance between and position of donors and acceptors at the nanometer scale, the accurate organization of multiple fluorophores in a specific arrangement plays a critical role in controlling their energy-transferring processes. Herein, we highlight our recent development on the utilization of nanostructures of diblock copolymer micelles for nanoscale arrangement of multiple fluorophores including quantum dots (QDs) to adjust FRET for tuning emissions from a single emitting layer.
Macromolecular Chemistry and Physics, 2011