RESEARCH INTERESTS

  • NANOPHOTONICS
    QDs can modulate the wavelength and intensity of emitted light, so they have possible application as switch probes for cellular and whole-body imaging, as optical modulators, and as light-emitting diodes. We synthesize various types of NPs, including core/shell QDs, nanorods, nanotetrapods and nanoporous materials. We have achieved photomodulation of QD conjugate by additional UV excitations that induce the electron transfers to QDs and quench their photoluminescence. We have also used inorganic capping-ligand QDs to sensitize solar cells.
  • NANOPLASMONICS
    Metals can display Surface Plasmon Resonance (SPR) when their sizes are reduced to the nanoscale. The applications of noble metal NPs can be very diverse such as spectroscopic and imaging tools, because SPR properties can be tailored by choosing metals with appropriate dielectric properties, and by selecting the size, shape, local environment of nanoscale metallic structures. We proposed novel metal NP complexes that could be used for highly-efficient cancer therapy and for photoacoustic-guided drug delivery.
  • NANOBIOTECHNOLOGY
    QDs present a possible new technology for in vivo bio-imaging and future medical imaging applications. QDs have proven potential as imaging contrast agents due to their bright luminescence, their resistance to photobleaching, and their tunable emission wavelengths. We developed NIR-II-emitting QD probes, and have achieved cancer diagnosis by using QD-Antibody conjugates. Also, we showed QDs in an amphiphilic polyethyleneimine derivative platform for cell labeling, targeting, gene delivery, and ratiometric oxygen sensing.
  • NANOPHOTONICS
    QDs can modulate the wavelength and intensity of emitted light, so they have possible application as switch probes for cellular and whole-body imaging, as optical modulators, and as light-emitting diodes. We synthesize various types of NPs, including core/shell QDs, nanorods, nanotetrapods and nanoporous materials. We have achieved photomodulation of QD conjugate by additional UV excitations that induce the electron transfers to QDs and quench their photoluminescence. We have also used inorganic capping-ligand QDs to sensitize solar cells.
  • NANOPLASMONICS
    Metals can display Surface Plasmon Resonance (SPR) when their sizes are reduced to the nanoscale. The applications of noble metal NPs can be very diverse such as spectroscopic and imaging tools, because SPR properties can be tailored by choosing metals with appropriate dielectric properties, and by selecting the size, shape, local environment of nanoscale metallic structures. We proposed novel metal NP complexes that could be used for highly-efficient cancer therapy and for photoacoustic-guided drug delivery.
  • NANOBIOTECHNOLOGY
    QDs present a possible new technology for in vivo bio-imaging and future medical imaging applications. QDs have proven potential as imaging contrast agents due to their bright luminescence, their resistance to photobleaching, and their tunable emission wavelengths. We developed NIR-II-emitting QD probes, and have achieved cancer diagnosis by using QD-Antibody conjugates. Also, we showed QDs in an amphiphilic polyethyleneimine derivative platform for cell labeling, targeting, gene delivery, and ratiometric oxygen sensing.

PUBLICATIONS

Chemistry of Materials 2020, 32, 6864-6874
"Colloidal Synthesis of Shape-Controlled Cs2NaBiX6 (X = Cl, Br) Double Perovskite Nanocrystals: Discrete Optical Transition by Non-Bonding Characters and Energy Transfer to Mn Dopants“
Wonseok Lee‡, Doowon Choi‡, and Sungjee Kim* (W.L. and D.C. contributed equally to this work.)
Nature Communications 2020, 11, 3127
"Evolution from unimolecular to colloidal-quantum-dot-like character in chlorine or zinc incorporated InP magic size clusters“
Yongju Kwon‡, Juwon Oh‡, Eunjae Lee, Sang Hyeon Lee, Anastasia Agnes, Gyuhyun Bang, Jeongmin Kim, Dongho Kim* & Sungjee Kim* (Y.K. and J.O. contributed equally to this work.)
Nano Letters 2019, 19, 308–317
"Synthesis of Ag/Mn Co-Doped CdS/ZnS (Core/Shell) Nanocrystals with Controlled Dopant Concentration and Spatial Distribution and the Dynamics of Excitons and Energy Transfer between Co-Dopant…“
Wonseok Lee, Juwon Oh, Woosung Kwon, Sang Hyeon Lee, Dongho Kim*, and Sungjee Kim*
Advanced Healthcare Materials 2018, 7, 1800695
"Multiplexed In Vivo Imaging Using Size-Controlled Quantum Dots in the Second Near-Infrared Window“
Sanghwa Jeong, Yebin Jung, Seoyeon Bok, Yeon-Mi Ryu, Sumin Lee, Young-Eun Kim, Jaejung Song, Miyeon Kim, Sang-Yeob Kim,* G-One Ahn,* and Sungjee Kim* (S.J. and Y.J. contributed equally to this work.)
Advanced Functional Materials 2018, 28, 1703450
"Colorectal Cancer Diagnosis Using Enzyme-Sensitive Ratiometric Fluorescence Dye and Antibody–Quantum Dot Conjugates for Multiplexed Detection“
Youngrong Park+, Yeon-Mi Ryu+, Taejun Wang, Yebin Jung, Sohee Kim, Sekyu Hwang, Joonhyuck Park, Dong-Jun Bae, Jaeil Kim, Heejo Moon, Hyun-Suk Lim, Sang-Yeob Kim, Euiheon Chung, Ki Hean Kim*, Sungjee Kim*, and Seung-Jae Myung* (Y.P. and Y.R. contributed equally to this work.)