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​​Publications

2024

  1.  “Water–Ion Interaction Determines the Mobility of Ions in Highly Concentrated Aqueous Electrolytes”, J. Kim, B. Koo, A. Khammari, K. Park, H. Lee, K. Kwak*, and M. Cho*, ACS Appl. Mater. Interface, 2024, 16, 8, 10033-10041

  2.  “High-efficiency Lithium Metal Stabilization and Polysulfide Suppression in Li-S Battery Enabled by Weakly Solvating Solvent”, TD Pham, A Bin Faheem, J Kim, SH Ma, K Kwak*, KK Lee​*, Small (2024), 2307951

  3.  “Synergistic Effects of Bisalt Additives in High-Voltage Rechargeable Lithium Batteries”, TD Pham, J Kim, HM Oh, K Kwak*, KK Lee*, ChemSusChem (2024), e202400636​​

  4.  “Molecular Photothermal Effect on the 2D-IR Spectroscopy of Acetonitrile-Based Li-Ion Battery Electrolytes”, SY Chun, JW Shim, K Kwak*, M Cho*, The Journal of Physical  Chemistry Letters 15 (2024), 7302-7311

  5.  “Characterization of molecular redox states on silica surfaces using shell-isolated nanoparticle-enhanced Raman spectroscopy(SHINERS) with carious shell thicknesses”, JY Kim, SB Yoon, S Lee, J Park, H Park, S Hwang, HB Na, K Kwak*, M Cho*, Sensors and Actuators Reports, 100240​
     

2023

  1.  “Thermoresponse of Odd-Even Effect in n-Alkanethiolate Self-Assembled Monolayers on Gold Substrates”, S. Park, E. Kim, Y. Choi, J. Jang, K. Kwak*, M. Cho*, and H. J. Yoon*, Chem. Eur. J., e202203536 (2023)

  2.  “Redox-active ligand-mediated assembly for high-performance transition metal oxide nanoparticle-based pseudocapacitors”, J. Ahn, Y. Song, Y.J. Kim, D. Nam, T. Kim, K. Kwak, C.H. Kwon, Y. Ko*, S.J. Lee*, J. Cho*, Chemical Engineering Journal 455 (2023) 140742

  3.  “Micro-Raman spectroscopic analysis of liquid-liquid phase separation.”, S. Choi, S.Y. Chun, K. Kwak*, and M. Cho*, Phys. Chem. Chem. Phys., 25 (13), 9051-9060

  4.  “Unlocking the Potential of Lithium Metal Batteries With a Sulfite-Based Electrolyte”, T.D. Pham, A. Bin Faheem, J. Kim, K. Kwak*, and K.K. Lee*, Adv. Func. Matt., 2305284

  5.  “Critical Role of Non-Halogenated Solvent Additives in Eco-Friendly and Efficient All-Polymer Solar Cells”, S. Kim, H. Choi, M. Lee, H. Jung, Y. Shin, S. Lee, K. Kim, M.H. Kim, K. Kwak, and B.S. Kim*, Polymers 15 (6), 1354

  6.  “Dielectric Relaxation Spectroscopy for the Characterization of Ion Transport in Solid Polymer Electrolytes in Li-ion Cells”, K. Kumbhakar, T.D. Pham, K.K. Lee, K. Kwak*, and M. Cho*, Electrochim. Acta, 142759

  7.  “Non-flammable electrolytes based on a fluorine-free salt for safe and high-voltage lithium metal batteries”, T.D. Pham, A. Bin Faheem, J. Kim, K. Kwak*, and K.K. Lee*, Electrochim. Acta 458, 142496

  8.  “Molecular Mechanism of Selective Al2O3 Atomic Layer Deposition on Self-Assembled Monolayers”, Y. Choi, H.J. Kim, E. Kim, J. Park, Y.R. Do*, K. Kwak*, and M. Cho*, ACS Appl. Mater. Interfaces 2023, 15, 34, 41170-41179

  9.  “Revisiting Ultrafast Dynamics in Carbonate-Based Electrolytes for Li-Ion Batteries: Clarifying 2D-IR Cross-Peak Interpretation“, C. Lim, J. Jeon, K. Park, C. Liang, Y. Chae, K. Kwak*, and M. Cho*,  J. Phys. Chem. B, 2023, 127, 44, 9566-9574

  10.  “Unlocking the Potential of Lithium Metal Batteries With a Sulfite‐Based Electrolyte“, T.D. Pham, A.B. Faheem, J. Kim, K. Kwak*, and K.K. Lee*, Adv. Func. Matt., 2023, 33, 2305284

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2022

  1.  “Direct observation of protein structural transitions through entire amyloid aggregation processes in water using 2D-IR spectroscopy”, SY Chun, MK Son, CR Park, C Lim, Hugh I. Kim*, K Kwak*, and M Cho*, Chem. Sci(2022)

  2.  “Important role of alloyed polymer acceptor for high efficiency and stable large-area organic photovoltaics”, S. Park, SH. Park, H. Jin, S. Yoon, H. Ahn, S. Shin, K. Kwak, S. NE. Shin, JH. Noh, BK. Min, HJ. Son*, Nano Energy, 98, 107187 (2022)

  3.  “Effects of π-conjugation on the charge-transport properties of hole-transporting materials featuring diphenylamine-π-quinacridone for perovskite solar cells: A theoretical study”, M. A. M. Rashid, J Kim. D. X. Long, K. Kwak*, J. Hong*, Bull. Korean Chem.Soc 2022, 1.

  4.  “Solvation structure of phosphonium ionic liquid/CH3SCN mixture as electrolytes for Li-ion batteries: Infrared pump-probe spectroscopic studies”, P. K. Sahu, J. Kim, K. Park, E. Kim, S. Mondal, K. Kwak*, M. Cho*, Bull. Korean Chem. Soc 2022, 43(2), 215.

  5.  “Dynamic Water Promotes Lithium-Ion Transport in Superconcentrated and Eutectic Aqueous Electrolytes”, J Kim, B Koo, J Lim, J Jeon, C Lim, H Lee,* K Kwak*, M Cho*, ACS Energy Lett. 2022, 7, 189−196

  6.  “Impact of Molecular Weight on Molecular Doping Efficiency of Conjugated Polymers and Resulting Thermoelectric Performances”, S E Yoon, B Kim, S Y Chun, K Kwak, Jong H. Kim*, B Kim*, Advanced Functional Materials, 2022, 220292

  7.  “Wettability of graphene, water contact angle, and interfacial water structure”, E. Kim, D. Kim, K. Kwak, Y. Nagata, M. Bonn and M. Cho*, Chem 8 (5), 1187-1200 (2022)

  8.  “Two‐Color Strip‐Patterned White OLEDs: Tunable Color‐Temperature via Pattern Dimension Control”, D. Han, M. Lee, W. Jang, S. Lee, J. Yang, H. Lee, K. Kwak, B.S. Kim* and M.S. Kang* Adv. Optical Mater. 2022, 10, 2200456

  9.  “Lithium-ion solvation structure in organic carbonate electrolytes at low temperatures”, Y. Chae, C. Lim, J. Jeon, M. Kim, K.K. Lee*, K. Kwak* and M. Cho*, J. Phys. Chem. Lett. 2022, 13, 7881-7888

  10.  “Remarkably High Conductivity and Power Factor in D–D′-type Thermoelectric Polymers Based on Indacenodithiophene”, A. Tripathi, B.E. Seo, M.J. Kim, Y. Lee, S. Lee, S.E. Yoon, U.J. Kim, Y.W. Kwon, H. Seo, K. Kwak*, J.H. Kim* and H.Y. Woo*, Adv. Electron. Mater. 2022, 8, 2200456

  11.  “Nondestructive Photopatterning of Heavy-Metal-Free Quantum Dots”, J. Yang, M. Lee, S.Y. Park, M. Park, J. Kim, N. Sitapure, D. Hahm, S. Rhee, D. Lee, H. Jo, Y.H. Jo, J. Lim, J. Kim, T.J. Shin, D.C. Lee, K. Kwak, J.S. Kwon, B.S. Kim*, W.K. Bae* and M.S. Kang*, Adv. Mater. 2022, 34, 2205504

  12.  “Ultrafast Continuum IR Generation and Its Application in IR Spectroscopy”, C. Lim, K. Park, Y. Chae, K. Kwak* and M. Cho*, Int. J. Mol. Sci. 2022, 23(21), 13245;

  13.  “Low-Voltage Organic Transistors with Carrier Mobilities over 10 cm2V–2s–1 Using Six-Branched Organic Azide”, M. Lee, B. Choi, P. Ahn, Y.Y. Choi, Y. Heo, J. Kim, J.H. Min, T.J. Shin, K. Kim, H. Choi, H. Kweon, D.H, Ho, J.I. Yoon, H. Kim, E. Lee, D.H. Kim, K. Kwak, M.S. Kang, J.H. Cho*, and B.S. Kim*, Chem. Mater. 2022, 34, 10409-10423

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2021

  1.  “Effect of Isotope Substitution on the Fermi Resonance and Vibrational Lifetime of Unnatural Amino Acids Modified with IR probe; A 2D-IR and Pump-probe Study of 4-Azido-L-Phenyl Alanine”, J. Park, S. Mondal, H. Kwon, H. Han*, K. Kwak*, and M. Cho*, J. Chem. Phys. 153, 164309 (2020).

  2.  “Activated carbons effectively purified by post-heat treatment under vacuum conditions”, J. Kim, HVT.Nhuyen, GJ. Bahk, K. Kwak*, and KK. Lee*, Carbon Lett. In press (2021).

  3.  "Ultrafast Intraband Auger Recombination in Self-Doped Colloidal Quantum Dots", J. Lim, Y. Choi, D. Choi, I. Chang, H. Kim K. Jeong,*, K. Kwak,*, and M. Cho,* Matter, 4, 1072 (2021)

  4.  “Real-Time Reaction Monitoring with In-operando Flow NMR and FTIR Spectroscopy: Reaction Mechanism of Benzoxazoles Synthesis”, Y. Chae, S. Min, E. Park, C. Lim, C. Cheon, K. Jeong*, K. Kwak*, and M. Cho, Anal. Chem. 93, 2106 (2021)

  5.  "Why Does Dimethyl Carbonate Dissociate Li Salt Better Than Other Linear Carbonates? Critical Role of Polar Conformers", H. Lee, S. Hwang, M. Kim, K. Kwak, J. Lee, Y. -K. Han and H. Lee*, J. Phys. Chem. Lett. 11, 10382 (2021).

  6.  "Operando Raman and UV-Vis spectroscopic investigation of the coloring and bleaching mechanism of self-powered photochromic devices for smart windows", S. Y. Chun, S. Park, S. I. Lee, H. D. Nguyen, K. -K. Lee, S. Hong,* C. -H. Han, M. Cho, H. -K. Choi* and K. Kwak*, Nano Energy, 82, 105721 (2021).

  7.  “Synergistic Effects on Lithium Metal Batteries by Preferential Ionic Interactions in Concentrated Bisalt Electrolytes”, TD. Pham, A. Bin Faheem, SY. Chun, JR, Rho, K. Kwak*, and KK. Lee*, Adv. Ener. Mat. 11, 2003520 (2021).

  8.  “Understanding morphological degradation of Ag nanoparticle during electrochemical CO2 reduction reaction by identical location observation”, H. Yun, J. Kim, W. Choi, MH. Han, JH. Park, HS. Oh, DH. Woo, K. Kwak*, and YJ. Hwang*, Electrochimica Acta. 371, 137795 (2021).

  9.  "Wettability of graphene and interfacial water structure", D. Kim, E. Kim, K. Kwak,* and M. Cho,* Chem, 7, 1602 (2021)

  10.  “Substituent Effects on the Vibrational Properties of the CN Stretch Mode of Aromatic Nitriles: IR Probes Useful for Time-resolved IR Spectroscopy”, S. Choi, J. Park, K. Kwak* and M. Cho* Chem Asian J. 16 ,1-8 (2021)

  11.  “Tetrabranched Photocrosslinker Enables Micrometer-Scale Patterning of Light-Emitting Super Yellow for High-Resolution OLEDs” W. Jang, M. Lee, H. Kweon, H. Park, J. Yang, S. Kim,.H. Jo, C. Lee, J. Cho, K. Kwak, D. Kim,* B. Kim,*.and M. Kang*, ACS Photonics 8, 2519 (2021)

  12.  “Quantum Mechanical/Molecular Mechanical Approach for the Simulation of UV-Vis Absorption Spectra of π-Conjugated Oligomers”, M. Rashid, K. Ahn, J. Jeon, M. Cho, B. S. Kim,* K. Lee,* K Kwak,*, J. Mol. Liq. 341, 117406 (2021)

  13.  “Solvation Structure around Li+ ion in Organic Carbonate Electrolytes: Spacer-Free Thin Cell IR Spectroscopy” C. Lim, J. Kim, Y. Chae, K. Lee,* K. Kwak,* M. Cho*, Anal. Chem. 93, 21954-12601 (2021)

  14.  “Adsorbed Water Structure on Acrylate-based Biocompatible Polymer Surface”, S.Mondal, J.  Kang, K. Park, J. Lim, J. Ha, K. Kwak*, and M. Cho*, J. Phys. Chem. Lett.  38, 9275-9282 (2021).

  15.  “Dynamic Water Promotes Lithium-Ion Transport in Super-concentrated and Eutectic Aqueous Electrolytes”, J. Kim, B. Koo, J. Lim, J. Jeon, C. Lim, H. Lee,* K. Kwak,* and M. Cho*, ACS Ener. Lett. Accepted (2021)

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2020

  1.  "New Insights into the Photodegradation Mechanism of PTB7-Th Film: Photooxidation of π-conjugated Backbone and Disaggregation upon Sunlight Illumination", Sangjun Kim, Md Al Mamunur Rashid, Taewon Ko, Kyusang Ahn, Yukung Shin, Sanghee Nah, Myung Hwa Kim, BongSoo Kim,* Kyungwon Kwak,* and Minhaeng Cho*, J. Phys. Chem. C.. 124, 2762-2770  (2020)

  2.  "2D Star-Shaped Non-Fullerene Electron Acceptors with Modulation of J-/H-Type Aggregations: Molecular Design-Morphology-Electrical Property Correlation", Koh CW, Cho HW, Rashid MA,  Lee TH, Park SY, Lee W, Kwak K*, Kim JY*, Woo, HY*, Adv. Materials Techonolgies, 5, 2000174 (2020).

  3.  "Theoretical Investigation of Azobenzene-Based Photochromic Dyes for Dye-Sensitized Solar Cells", Rashid, MA, Hayati, D, Kwak, K *, Hong, J*, NANOMATERIALS, 10, 914 (2020)

  4.  "Propionitrile as a single organic solvent for high voltage electric double-layer capacitors", Nguyen, HV, Bin Faheem, A, Kwak, K*, Lee, KK*, JOURNAL OF POWER SOURCES, 463, 228134 (2020)

  5.  "IrCo Nanocactus on CoxSy Nanocage as a Highly Efficient and Robust Electrocatalyst for Oxygen Evolution Reaction in Acidic Media", J. Kim, T. Kwon, S. Yu, S. Y. Chun, A. Oh, J. M. Kim, H. Baik, H. C. Ham, J. Y. Kim, K. Kwak*, K. Lee*, Nanoscale, 12, 17074 (2020)

  6.  "Two-dimensional IR Spectroscopy Reveals a Hidden Fermi Resonance Band in the Azido Stretch Spectrum of β-Azidoalanine", J. Park, H. Kwon, S. Mondal, H. Han*, K. Kwak*, and M. Cho*, Phys. Chem. Chem. Phys. 22, 19223 (2020)

  7.  "Study of aqueous Am(III)-aliphatic dicarboxylate complexes: Coordination mode-dependent optical property and stability changes", H. Kim*, K. Jeong, H. Cho, K. Kwak*, E. Jung, W. Cha, Inorg. Chem. 59, 13912 (2020)

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2019

  1.  "Computational Investigation of Tuning the Electron-Donating Ability in Metal-Free Organic Dyes Featuring an Azobenzene Spacer for Dye-Sensitized Solar Cells", Md Al Mamunur Rashid, Dini Hayati, Kyungwon Kwak,* and Jongin Hong,* Nanomaterials, 9, 119 (2019)

  2.  "Tuning of carbon dots emission color for sensing of Fe3+ ion and bioimaging applications", Suresh Kumar Kailasa, Siyoung Ha, Seung Hoon Baek, Le Minh Tu Phan, Sangjun Kim, Kyungwon Kwak, Tae Jung Park⁎, Materials Science & Engineering C 98,  834–842 (2019)

  3.  "1,1-Dimethylpyrrolidinium tetrafluoroborate as novel salt for highvoltage electric double-layer capacitors, Hoai Van T. Nguyen", Kyungwon Kwak *, Kyung-Koo Lee *, Electrochimica Acta, 299, 98-106 (2019)

  4.  "High-efficiency non-fullerene polymer solar cell fabricated by a simple process using new conjugated terpolymers", Mai Ha Hoang, Gi Eun Park, Suna Choi, Chang Geun Park, Su Hong Park, Tuyen Van Nguyen, Sangjun Kim, Kyungwon Kwak, Min Ju Cho* and Dong Hoon Choi, J. Mater. Chem. C, 7, 111—118 (2019)

  5.  "Two-dimensional Infrared Spectroscopy and Molecular Dynamics Simulation Studies of Nonaqueous Lithium-ion Battery Electrolytes", Joonhyung Lim, Kyung-Goo Lee, Chungwen Liang, Kwang-Hee Park, Minjoo Kim, Kyungwon Kwak, and Minhaeng Cho∗, J. Phys. Chem. B. 123, 6651-6653 (2019)

  6.  "Spectroscopic speciation of aqueous Am(III)-oxalate complexes", H.–K. Kim*, K. Jeong, H.–R. Cho, E. C. Jung, K. Kwak*, W. Cha, Dalton Transactions 48, 10023-10032 (2019)

  7.  "Rational Design of an Acetylenic Infrared Probe with Enhanced Dipole Strength and Increased Vibrational Lifetime", Dorota Kossowska, Kwanghee Park, Jun Young Park,‡ Chaiho Lim,  Kyungwon Kwak,* and Minhaeng Cho*, J. Phys. Chem. B. 123, 6274-6281  (2019)

  8.  "High voltage electric double-layer capacitors based on bis(oxalate)borate-containing electrolytes", Hoai Van T. Nguyen, Sanghee Lee, Kyungwon Kwak*, Kyung-Koo Lee*, Electrochimica Acta, 321, 134649 (2019)

  9.  "Two-dimensional infrared spectroscopic study of cytochrome c peroxidase activity in deep  eutectic solvent", Koji Osawa, Dorota Kossowska, Kwanghee Park, Kyungwon Kwak,* and Minhaeng Cho*, Struct. Dyn. 6 ,064703 (2019)

  10.  "Simultaneous Enhancements of Vibrational Transition Dipole and Lifetime of Alkyne IR Probe with π-d Backbonding and Vibration-Isolating Groups", Dorota Kossowska, Giseong Lee, Hogyu Han,* Kyungwon Kwak,*,Minhaeng Cho*, Phys. Chem. Chem. Phys. 21, 24929 (2019)

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2018

  1.  "In-situ measurement of vitamin C content in commercial tablet products by terahertz time-domain spectroscopy", JuHee Kang, Jeonghun Song, Tae Sub Jung, Kyungwon Kwak*, Hyang Sook Chun*, Journal of Infrared, Millimeter, and Terahertz Waves, 39, 366-376 (2108)

  2.  "Hindered C-N Bond Rotation in Triazinyl Dithiocarbamates", Taesub Jung, Hee-Jin Do, Jongwoo Son, Jae Hee Son , Wansik Cha, Yeong-Joon Kim*, Kyung-Koo Lee*, Kyungwon Kwak*, Journal of Molecular Structure, 1152, 215-222 (2018)

  3.  "Revealing the Solvation Structure and Dynamics of Carbonate Electrolytes in Lithium-Ion Batteries by Two-Dimensional Infrared Spectrum Modeling", Chungwen Liang, Kyungwon Kwak, Minhaeng Cho*,  J. Phys. Chem. Lett. 8, 5779-5784 (2017)

  4.  "Synthesis of Organic Semiconductor Bearing B←N Bridged Thienylthiazole and Diketopyrrolopyrrole for the Application of High Open-circuit Voltage Organic Photovoltaics", Ka Yeon Ryu, Dan-Bi Sung, Suk-Young Won, Ara Jo, Kyusang Ahn, Hyun Yeong Kim, Arulraj ArulKashmir, Kyungwon Kwak, Chongmok Lee, Won-Suk Kim,∗∗, Kyungkon Kima,∗ Dyes and Pigments,  149, 858-866 (2018)

  5.  "Cyanamide as an Infrared Reporter: Comparison of Vibrational Properties between Nitriles Bonded to N and C Atoms", Giseong Lee, Dorota Kossowska, Joonhyung Lim, Soobin Kim, Hogyu Han,* Kyungwon Kwak,*, and Minhaeng Cho*, J. Phys. Chem. B. 122, 4035-4044 (2018)

  6.  "Electrochemical Formation of Divalent Samarium Cation and Its Characteristics in LiCl−KCl Melt", Sang-Eun Bae,* Tae Sub Jung, Young-Hwan Cho, Jong-Yun Kim, Kyungwon Kwak,*, and Tae-Hong Park*, Inorg. Chem. 57, 8299-8306 (2018) .

  7.  "Electronic Effect on the Molecular Motion of Aromatic Amides: Combined Studies Using VT-NMR and Quantum Calculations", Sungsoo Kim, Jungyu Kim, Jieun Kim, Daeun Won, Suk-Kyu Chang, Wansik Cha, Keunhong Jeong*, Sangdoo Ahn* and Kyungwon Kwak*, Molecules, 23, 2294 (2018)

  8.  "Systematic Investigation of the Acinetobactin Transport Process in Acinetobacter baumannii and Proposal of a Thermally Stable Acinetobactin Surrogate Suitable as an Antibiotic Delivery Vehicle", Woon Young Song, Min Wook Lee, Haeun Lee, Ye Song Park, Minju Kim, Kyungwon Kwak, Man Hwan Oh*, Hak Joong Kim*, Org. Lett. 20, 6476−6479 (2018)

  9.  "Nanometric water channels in water-in-salt lithium-ion battery electrolyte", Joonhyung Lim, Kwanghee Park, Hochan Lee, Jungyu Kim, Kyungwon Kwak* and Minhaeng Cho*, J. Am. Chem. Soc, 140, 15661 (2018).

  10. "Do Osmolytes Impact the Structure and Dynamics of Myoglobin?", Dorota Kossowska, Kyungwon Kwak* and Minhaeng Cho*, Molecules, 23, 3189 (2018)

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2017

  1.  "Ultrafast fluxional exchange dynamics in electrolyte solvation sheath of lithium ion battery", Kyung-Koo Lee, Kwanghee Park, Hochan Lee, Yohan Noh, Dorota Kossowska, Kyungwon Kwak* & Minhaeng Cho*, Nature Comm. 8, 14658 (2017)

  2.  "Modulating Ion Transport and Self-Assembly of Polymer Electrolytes via End-Group Chemistry", Ha Young Jung†, Prithwiraj Mandal†‡, Gyuha Jo† , Onnuri Kim†, Minju Kim§∥, Kyungwon Kwak§∥, and Moon Jeong Park*†‡, Macromolecules, 50,3224 (2017)

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Before 2017

  1.  “Two-dimensional vibrational spectroscopy. IV. Relationship between through-space vibrational coupling and intermolecular distance”, Hahn S, Kwak K, Cho M.  Journal of Chemical Physics 112 4553-4556 (2000)    

  2.  “Vibrational interactions of acetonitrile: Doubly vibrationally resonant IR-IR-visible four-wave-mixing spectroscopy”, Kwak K, Cha S, Cho MH, Wright J. Journal o. Chemical Physics 117 5675-5687 (2002)

  3.  “ Two-color transient grating spectroscopy of two level system” Kwak K, Cho MH, Fleming GR, et al. Bull. Kor. Chem. Soc. 24 1609 (2003)

  4.   “Amide I modes of alpha-helical polypeptide in liquid water:Conformational fluctuation, phase correlation, and linear and nonlinear vibrational spectra”  S. Ham, S. Hahn, C. Lee, T.-K. Kim, K. Kwak, M. Cho, J. Phys. Chem. B. 108, 9333 (2004) 

  5.  “Dynamics of water probed with vibrational echo correlation spectroscopy” Asbury JB, Steinel   T, Kwak K, Fayer MD. J. Chem. Phys. 121 12431 (2004)

  6.  “Ultrafast dynamics of solute-solvent complexation observed at thermal equilibrium in real time" J. Zheng, K. Kwak, J. Asbury, X. Chen, I.R. Piletic, M.D. Fayer, Science,  309, 1338, (2005)

  7.  “Accidental Vibrational degeneracy in vibrational excited states observed with Ultrafast two-dimensional IR vibrational echo spectroscopy”Zheng JR, Kwak K, Steinel T, Fayer   MD. J. Chem. Phys. 123 164301 (2005)

  8.  “Formation and dissociation of intra inter-molecular hydrogen-bonded solute-solvent complexes:  Chemical exchange two-dimensional IR vibrational echo spectroscopy” Zheng JR, Kwak K, Chen X, Fayer MD. J. Am. Chem. Soc. 128, 2977 (2006).

  9.  “Ultrafast two-dimensional infrared vibrational echo chemical exchange experiments and theory”  Kwak K, Zheng JR, Cang H, Fayer MD. J. Phys. Chem. B. 110 19998 (2006)

  10.  “Phenol-benzene complexation dynamics: Quantum chemistry calculation,  molecular dynamics simulations, and two dimensional IR spectroscopy”Kwac K, Lee C, Jung Y, Han J, Kwak K, Zheng J, Fayer MD and Cho M.  J. Chem. Phys. 125, 244508 (2006)  

  11.  “Ultrafast Carbon-Carbon Single Bond Rotational Isomerization in room temperature solution” Zheng JR, Kwak K, Xie J, Fayer MD Science 313 1952 (2006).

  12.  “Ultrafast 2D-IR Vibrational Echo Spectroscopy”  Zheng J, Kwak K, Fayer MD  Acc. Chem. Res. 40 75 (2007)

  13.  “Probing dynamics of complex molecular systems with Ultrafast 2D-IR  vibrational echo spectroscopy” Finkelstein IJ, Zheng J, Ishikawa H, Kim S, Kwak K and Fayer MD.                              Phys. Chem. Chem. Phys. 9 1533 (2007)

  14.  “Dynamics around solute and solute-solvent complex in mixed solvents” Kwak K, Park S and Fayer MD. Proc. Nat. Acad. Sci. U.S.A. 104 14221 (2007) 

  15.  “Ultrafast 2D-IR Vibrational Echo Spectroscopy: A Probe of Molecular Dynamics”S Park, K Kwak, and MD Fayer. Laser Phys. Lett. 4 704 (2007)

  16.  “Neuroglobin dynamics observed with ultrafast 2D-IR vibrational echo spectroscopy” H Ishikawa, IJ. Finkelstein, S Kim, K Kwak, JK. Chung, K Wakasugi, AM. Massari, and MD Fayer. Proc. Nat. Acad. Sci. U.S.A. 104 10116 (2007).

  17.  “Frequency-frequency correlation functions and apodization in two-dimensional infrared echo  spectroscopy” Kwak K, Park S, Finkelstein IJ and Fayer MD J. Chem. Phys. 127 124503 (2007).

  18.  “Disulfide bonds’ influence on protein structural dynamics probed with 2D-IR vibrational echo spectroscopy” H Ishikawa, S Kim, K Kwak, K Wakasugi, and MD. Fayer Proc. Nat. Acad. Sci. U.S.A. 104 19309 (2007).

  19.  “Direct observation of fast protein conformational switching” H Ishikawa, K Kwak, JK Chung, S Kim, and MD Fayer, Proc. Nat. Acad. Sci. U.S.A. 105 8619 (2007).

  20.  “Native and Unfoled Cytochrome C-Comparison of Dynamics Using 2D-IR Vibrational Echo Spectroscopy” S Kim, JK. Chung, K Kwak, SEJ Bowman, KL Bren, B Bagchi, and M. D. Fayer  J. Phys. Chem. B. 112 10221 (2008)

  21.  “Taking Apart the 2D-IR Vibrational Echo Line Shape: Elimination of Distortions in determination of the Frequency-Frequency Correlation Function” K Kwak, RE Daniel, MD Fayer J. Chem. Phys. 128 204505 (2008).

  22.  “Solute-Solvent complex Switching Dynamics of Chloroform between Acetone and Dimethylsulfoxide-2D IR Chemical Exchange Spectroscopy.” K Kwak, RE Daniel, MD Fayer J. Phys. Chem. B. 112 10054 (2008)

  23.  “Hydrogen Bond Migration between Molecular Sites Observed with Ultrafast 2D IR Chemical Exchange Spectroscopy”  RE Daniel, K Kwak, Z Gengeliczki and MD Fayer J. Phys. Chem. B. 113,13300 (2010).

  24.  “Biomimetic Self-Templating Supramolecular Structure” WJ Chung, JW Oh, K Kwak ,BY Lee, J Meyer, E Wang, A Hexamer, SW Lee Nature, 478 364. (2011)

  25.  “Second-harmonic generating properties of polar noncentrosymmetric aluminoborate solid solutions, Al5−xGaxBO9 (0.0 ≤ x ≤ 0.5)” Y Shin, DW Lee, JI Hong, K Kwak, KM Ok Dalton Trans., 41 3233 (2012)

  26.  “Extracting Frequency-Frequency Correlation function from Two-dimensional Infrared Spectroscopy: Peak-shift Measurement” K Kwak Bull. Kor. Chem. Soc. 33 3391 (2012).

  27.  “Crystallinity-Controlled Naphthalene-alt-diketopyrrolopyrrole Copolymers for High-Performance Ambipolar Field Effect Transistors” J. Phys. Chem. C, 116, 26204 (2012)

  28.  “Ultrafast intermolecular vibrational excitation transfer from solute to solvent: Observation of intermediate states”, Hyewon Son, Kwang-Hee Park, Kyung-won Kwak*, Sungnam Park*, and Minhaeng Cho*, Chem. Phys. 422, 37 (2013)

  29.  “Computational IR and 2D IR Photon Echo Spectroscopy of Both Wild-Type and Double Mutant Myglobin-CO Protiens.”, Jun-Ho Choi, Kyung-won Kwak*, Minhaeng Cho*, J. Phys. Chem. B. 117, 15462 (2013)

  30.  “Polarization-Controlled Chiroptical and 2D Optical Spectroscopy” , Kyungwon Kwak, Kwang-Hee Park, and Minhaeng Cho  in Ultrafast Infrared Vibrational Spectroscopy, CRC Press: Boca Raton, FL (2013)

  31.  “Facile synthesis of metal-free organic dyes featuring a thienylethynyl spacer for dye sensitized solar cells”, Manal Al-Eid, SungHwan Lim, Kwang-Won Park, Brian Fitzpatrick, Chi-Hwan Han, Kyungwon Kwak*, Jongin Hong*, Graeme Cooke*, Dyes and Pigments, 104, 197 (2014).

  32.  “A molecular porous zirconium–.organic material exhibiting highly selective CO2 adsorption, high thermal stability, reversible hydration, facile ligand exchange and exclusive dimerization of phenylacetylene”, Nam Hee Lee, Dong Woo Lee, Hakmin Yeo, Kyungwon Kwak, Hyang Sook Chun, Kan Min O*k, CrystEngComn, 16, 5619 (2014)

  33.  “Nanoscopic Management of Molecular Packing and Orientation of Small Molecules by a Combination of Linear and Branched Alkyl Side Chains”, Minwoo Jung, Youngwoon Yoon, Jae Hoon Park, Wonsuk Cha, Ajeong Kim, Jinback Kang, Sanjeev Gautam,  Dongkyun Seo,  Jeong Ho Cho,  Hyunjung Kim, Jong Yong Choi,  Keun Hwa Chae, Kyungwon Kwak, Hae Jung Son, Min Jae Ko, Honggon Kim, Doh-Kwon Lee, Jin Young Kim, Dong Hoon Choi, BongSoo Kim*, ,ACS Nano, 8, 5988 (2014)

  34.  "Ferroelectric Nanodot Formation from Spin-Coated Poly(vinylidene fluoride-co-trifluoroethylene) Films and Their Application to Organic Solar Cells", Yoon-Young Choi, Kyungwon Kwak*, Ji-Won Seo, Moonkyu Park, Haemin Paik, Jung-Yong Lee, Jongin Hong, Kwangsoo No*, Journal of Applied Polymer Science, 41230 (2014)

  35.  "Vibrational dynamics of thiocyanate and selenocyanate bound to horse heart myoglobin", Michał Maj, Younjun Oh, Kwanghee Park, Jooyong Lee, Kyung-Won Kwak, and Minhaeng Cho*, J. Chem. Phys. 127 124503 (2014).

  36.  "Infrared Pump−.Probe Study of Nanoconfined Water Structure in Reverse Micelle", Jooyong Lee, Michał Maj, Kyungwon Kwak*, and Minhaeng Cho*, J. Phys. Chem. Lett. 5, 3404 (2014)

  37.  "Structural and morphological tuning of dithienobenzodithiophenecore small molecules for efficient solution processed organic solar", Minwoo Jung, Dongkyun Seo, Kyungwon Kwak, Ajeong Kim, Wonsuk Cha, Hyunjung Kim, Youngwoon Yoon, Min Jae Ko, Doh-Kwon Lee, Jin Young Kim, Hae Jung Son *, BongSoo Kim *, Dyes and Pigments, 115, 23-34 (2015).

  38.  "Density Functional Theory Study on Silolodithiophene-thiophenepyrolepyroledione-Based Small molecules: the Effect of Side Alkyl Chain length in Electron-donor Materials on electronic structure and molecular geometry.", Dong-Kyun Seo, Youngwoon Yoon, Kyung-Koo Lee, BongSoo Kim, Kyungwon Kwak*, Bull. Kor. Chem. Soc.  36,513-159 (2015).

  39.  "Enhancement of Organic Photovoltaic Efficiency via Nanomorphology Control using Conjugated Polymers Incorporating Fullerene Compatible Side-Chains", Sungmin Park, Dongkyun Seo, Tae In Ryu, Gukil Ahn, Kyungwon Kwak, Hyunjung Kim, Cheol Hong Cheon, Nam-Gyu Park, BongSoo Kim, Min Jae Ko, Doh-Kwon Lee, Jin Young Kim, Honggon Kim, and Hae Jung Son*, Macromolecules,48, 337-345 (2015)

  40.  "Analysis of the Terahertz Absorption Spectrum of Melamine", Yeun Hee Hwang, Yo Han Noh, Dongkyun Seo, Hak Min Yeo, Seongheun Kim, Jaehun Park, Hyang Sook Chun,§,* and Kyungwon Kwak,* Bull. Kor. Chem. Soc.  36, (2015).

  41.  "Simultaneous Enhancement of Upconversion and Downshifting Luminescence via Plasmonic Structure", Lee, Kyu-Tae; Park, Jong-Hyun; Kwon, S. Joon; Kwon, Hyun-Keun; Kim, Ji-Hoon; Kwak, Kyungwon; Jang, Ho Seong; Kim, Su Yeon; Han, Joon Soo; Lee, Sung-Hwan; Shin, Dong-Hun; Ko, Hyungduk; Han, Il Ki; Ju, Byeong-Kwon*; Kwon, Soon-Hong*; Ko, Doo-Hyun*, Nano Letters, 15, 2491-2497 (2015).

  42. "Highly Planar Fluorinated Benzothiadiazole-Based Conjugated Polymer for High-Performance Organic Thin-Film Transistors", Benjamin Nketia-Yawson, Hyo-Sang Lee, Dongkyun Seo, Youngwoon Yoon, Won-Tae Park, Kyungwon Kwak, Hae Jung Son, BongSoo Kim*, Yong-Young Noh1,* Adv. Mater, 27, 3045 (2015)

  43.  "β-Isocyanoalanine as an IR probe: comparison of vibrational dynamics between isonitrile and nitrile-derivatized IR probes", Michał Maj, Changwoo Ahn, Dorota Kossowska, Kwanghee Park, Kyungwon Kwak, Hogyu Han* and Minhaeng Cho*, Phys. Chem. Chem. Phys. , 17, 11770 (2015)

  44.  "Bathochromic Shift in Absorption Spectra of Conjugated Polymer Nanoparticles with Displacement along Backbones", Dongkyun Seo, Jonghyup Park, Tae Joo Shin, Pil J. Yoo, Juhyun Park *, and Kyungwon Kwak*, Macro. Res, 23,574 (2015)

  45.  "Modulation of the Hydrogen Bonding Structure of Water by Renal Osmolytes, Pramod Kumar Verma, Hochan Lee, Joon-Young Park, Joon-Hyung Lim, Michal Maj, Jun-Ho Choi, Kyungwon Kwak, Minhaeng Cho*, J. Phys. Chem. Lett. 6, 2773 (2015)

  46.  "Fast ultrasound-assisted synthesis of Li2MnSiO4 nanoparticles for a lithium-ion battery", Chahwan Hwang, Taejin Kim, Joongpyo Shim, Kyungwon Kwak, Kang Min Ok, Kyung-Koo Lee*, Journal of Power Sources, 294, 522 (2015)

  47.  "Density Functional Investigation of Graphene Doped with Amine-Based Organic Molecules", Yeun Hee Hwang, Hyang Sook Chun, Kang Min Ok, Kyung-Koo Lee*, Kyungwon Kwak*, Journal of nanomaterials, 917673 (2015).

  48.  "Effects of dynamic 3D-volume of side chains in conjugated polymers on nano-scale morphology and solar cell properties", Sungmin Park, Dongkyun Seo, Kyungwon Kwak, Dae Sung Chung, Cheol Hong Cheon, Bongsoo Kim, Hae Jung Son*, Dyes and Pigments, 123,323-330 (2015).

  49.  "Ultrafast Structural Fluctiations of Myglobin-Bound Thiocyanate and Selecnocyanate Ions Measured with Two-Dimensional Infrared Photon Echo Spectroscopy", Michal Maj, Kyungwon Kwak, Minhaneng Cho*, ChemPhysChem, 16,3468-3476 (2015).

  50.  "Synthesis, characterization, and electrochemical performance of V-doped Li2MnSiO4/C composites for Li-ion battery", Chahwan Hwang, Taejin Kim, Yohan Noh, Wansik Cha, Joongpyo Shim, Kyungwon Kwak*, Kang Min Ok*, Kyung-Koo Lee*, Mater. Lett. 164, 270-273 (2016)

  51.  "Detection of the carbamate insecticide methomyl in foods using terahertz time-domain spectroscopy",  Seung Hyun Baek; Ju Hee Kang; Yeun Hee Hwang; Kang Min Ok; Kyungwon Kwak*; Hyang Sook Chun*, published online, Journal of Infrared, Millimeter, and Terahertz Waves, 37, 486-497  (2016)     

  52.  "Effect of Amine-Based Organic Compounds on the Work-Function Decrease of Graphene". Ki Chang Kwon, Ho Won Jang, Yeun Hee Hwang, Kyungwon Kwak, Ho Jun Son, Jeong Hyeon Oh, Tae-Won Lee, Kwangyong Park*, Soo Young Kim*, J. Phys. Chem. C , 120, 1309-1316 (2016)

  53.  "Enzymatic formation of cyclodextrin ring catalyzed by single-walled carbon nanotubes", Moon Seop Hyun, Jong Pil Park, Dongkyun Seo, Seok Jae Lee, Sang Yup Lee, Kyungwon Kwak*, Tae Jung Park*, Bioprocessed and Biosystems Engineering , 39, 725-733 (2016)

  54.  "DFT computational investigation of tuning the electron donating ability in metal-free organic dyes featuring a thienylethynyl spacer for dye sensitized solar cells:, Dongkyun Seo†, Kwang-Won Park†, Jiyoon Kim, Jongin Hong* and Kyungwon Kwak*, Computational and Theoretical Chemistry, 1081, 30-37 (2016)

  55.  "Water Hydrogen-bonding Network Structure and Dynamics at Phospholipid Multibilayer Surface: Femtosecond Mid-IR Pump-Probe Spectroscopy", Achintya Kundu, Bartosz Błasiak, Joon-Hyung Lim, Kyungwon Kwak, Minhaeng Cho*, J. Phys. Chem. Lett.7, 741-745 (2016)

  56.  "Water Structure at the Lipid Multibilayer Surface: Anionic Versus Cationic Head Group Effects", Achintya Kundu,  Kyungwon Kwak, Minhaeng Cho*, J. Phys. Chem. B. 120, 5002-5007(2016)

  57.  "Effect of multi-armed triphenylamine-based hole transporting materials for high performance perovskite solar cells", Sungmin Park,  Jin Hyuck Heo, Jae Hoon Yun, Tae Sub Jung, Kyungwon Kwak, Min Jae Ko,  Cheol Hong Cheon, Jin Young Kim,  Sang Hyuk Im* and Hae Jung Son* , Chemical Science, 7, 5517-5522 (2016)

  58.  "Isonitrile as an Ultrasensitive Infrared Reporter of Hydrogen-Bonding Structure and Dynamics", Michał Maj, Changwoo Ahn, Bartosz Błasiak, Kyungwon Kwak, Hogyu Han,* and Minhaeng Cho* J. Phys. Chem. B. 120, 10167-10180 (2016)

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