PUBLICATIONS

Tailoring the photovoltaic performance of benzothiadiazole-based D–A-type polymers by incorporating robust electron-withdrawing substituents

Dinda Fariesta Nugraha, Eunhye Yang, Juan Anthony Prayogo, Soo Yeon Lee, Yu Kyung Lee, Dong Ryeol Whang, Jincheol Kim, Sung Heum Park, Dong Wook Chang

Optical Materials 2024, 154, 115778

Enhancement of Interfacial Properties by Indoloquinoxaline‐Based Small Molecules for Highly Efficient Wide‐Bandgap Perovskite Solar Cells

Jihye Yong, Yu Kyung Lee, Hansol Park, Senthilkumar Muthu, Juhwan Shin, Dong Ryeol Whang, Bong‐Gi Kim, Dong Wook Chang, Hui Joon Park

Advanced Functional Materials 2024, 34, 2312505

Nature-Inspired Photocatalytic Hydrogen Production with a Flavin Photosensitizer

Lucia Ivanová, Jan Truksa, Dong Ryeol Whang, Niyazi Serdar Sariciftci, Cigdem Yumusak, Jozef Krajčovič

ACS Omega 2024, 9, 5534

High Open‐Circuit Voltage Wide‐Bandgap Perovskite Solar Cell with Interface Dipole Layer

Jihyeon Heo, Juan Anthony Prayogo, Seok Woo Lee, Hansol Park, Senthilkumar Muthu, JeeHee Hong, Haeun Kim, Young‐Hoon Kim, Dong Ryeol Whang, Dong Wook Chang, Hui Joon Park

Small 2024, 2404784

Density-of-state engineering of conjugated polymers by implanting partial two-dimensional conjugation: Broad absorption and high performing organic photovoltaics

Yeongkwon Kang, Jung Won Yoon, Yu Kyung Lee, Sooji Hwang, Hyungju Ahn, Dong Ryeol Whang, Jihoon Lee, Dong Wook Chang, Hyosung Choi, Bong-Gi Kim

Chemical Engineering Journal 2023, 478, 147250

Interfacial modification of wide-bandgap perovskite solar cell approaching 20% with organic hole transport material

Jihyeon Heo, Seok Woo Lee, Jihye Yong, Hansol Park, Yu Kyung Lee, Juhwan Shin, Dong Ryeol Whang, Dong Wook Chang, Hui Joon Park

Chemical Engineering Journal 2023, 474, 145632

Controlling photovoltaic performances of trifluoromethylated quinoxaline-based polymers via fluorine substitution

Yu Kyung Lee, Dong Hwan Son, Seok Woo Lee, Dinda Fariesta Nugraha, Dong Ryeol Whang, Joo Hyun Kim, Dong Wook Chang

Materials Today Energy 2023, 36, 101368

Achieving Highly Sensitive Near‐Infrared Organic Photodetectors using Asymmetric Non‐Fullerene Acceptor

Un‐Hak Lee, Byoungwook Park, Seunghyun Rhee, Jong‐Woon Ha, Dong Ryeol Whang, Hyeong Ju Eun, Jong H Kim, Yeongseok Shim, Junseok Heo, Changjin Lee, Bumjoon J Kim, Sung Cheol Yoon, Jaewon Lee, Seo‐Jin Ko

Advanced Optical Materials 2023, 11, 17, 2300312

Controlling the interfacial dipole via functionalization of quinoxaline-based small molecules for electron transport layer in organic light emitting diodes

Seok Woo Lee, Xiangyang Fan, Dong Ryeol Whang, Ji Won Jang, Hyosung Choi, Dong Wook Chang, Bo Ram Lee

Journal of Information Display 2023, 3, 189-198

Substituent Effects of Electron-Withdrawing and Electron-Donating Groups on Photovoltaic Properties of Quinoxaline-Based Polymers

Dinda Fariesta Nugraha, Danbi Kim, Eunhye Yang, Seok Woo Lee, Dong Ryeol Whang, Sang A Lee, Sung Heum Park, Dong Wook Chang

ACS Appl. Electron. Mater. 2023, 5, 2, 1174–1182

Effect of Chlorine Substituents on the Photovoltaic Properties of Monocyanated Quinoxaline-Based D–A-Type Polymers

Seok Woo Lee, MD Waseem Hussain, Jihoon Lee, Dong Ryeol Whang, Woo Hyeon Jeong, Hyosung Choi, Dong Wook Chang

ACS Appl. Mater. Interfaces 2023, 15, 4, 5547–5555

Strategic structural evolution for enhancing the photovoltaic performance of quinoxaline-based polymers

Dinda Fariesta Nugraha, Dong Hwan Son, Ratri Puspita Wardani, Seok Woo Lee, Dong Ryeol Whang, Joo Hyun Kim, Dong Wook Chang

Journal of Industrial and Engineering Chemistry 2022, 114, 331-337

Improved Photovoltaic Performance of Quinoxaline-Based Polymers by Systematic Modulation of Electron-Withdrawing Substituents

Christyowati Primi Primi Sagita, Jung Won Yoon, Minju Kyeong, Seok Woo Lee, Hyemin Bae, Dong Ryeol Whang, Hyosung Choi, Seo-Jin Ko, Dong Wook Chang

J. Mater. Chem. C, 2022, 10, 10338

Effect of Electron-Withdrawing Chlorine Substituent on Morphological and Photovoltaic Properties of All Chlorinated D–A-Type Quinoxaline-Based Polymers

Seok Woo Lee, Hee Jeong Shin, Byoungwook Park, Sanchari Shome, Dong Ryeol Whang, Hyemin Bae, Sein Chung, Kilwon Cho, Seo-Jin Ko, Hyosung Choi, Dong Wook Chang

ACS Appl. Mater. Interfaces, 2022, 14, 19785

Effect of electron-withdrawing fluorine and cyano substituents on photovoltaic properties of two-dimensional quinoxaline-based polymers

Seok Woo Lee, MD. Waseem Hussain, Sanchari Shome, Su Ryong Ha, Jae Taek Oh, Dong Ryeol Whang, Yunseul Kim, Dong-Yu Kim, Hyosung Choi, and Dong Wook Chang

Scientific Reports, 2021, 11, 24381

Simple Methoxy-Substituted Quinoxaline-Based D-A Type Polymers for Nonfullerene Polymer Solar Cells

Ratri Puspita Wardania, Mijin Jeong, Seok Wook Lee, Dong Ryeol Whang, Joo Hyun Kim, Dong WookChang

Dyes and Pigments, 2021, 192, 109346

Deep-Red Fluorescent Poly(acrylic acid) Hydrogel: Proton Transfer to the Water Soluble Dibasic Luminescent Dye Followed by Ion-Pair Formation

Junjie Cui, Ji Eon Kwon. Dong Ryeol Whang, and Soo Young Park

Dyes and Pigments, 2021, 188, 109223

Enhanced photovoltaic performance of quinoxaline-based donor-acceptor type polymers with monocyano substituent

Christyowati Primi Sagita, Jun Ho Lee, Seok Woo Lee, Dong Ryeol Whang, Joo Hyun Kim, Dong Wook Chang

Journal of Power Sources, 2021, 491, 229588

Tunable Properties of Nature-Inspired N,N′-Alkylated Riboflavin Semiconductors

Jan Richtar, Lucia Ivanova, Dong Ryeol Whang, Cigdem Yumusak, Dominik Wielend, Martin Weiter, Markus Clark Scharber, Alexander Kovalenko, Niyazi Serdar Sariciftci, and Jozef Krajcovic

Molecules, 2021, 26, 27

EKC 2019 Conference Proceedings

Science, Technology, and Humanity: Advancement and Sustainability

Jong Mun Park and Dong Ryeol Whang

DOI: 10.1007/978-981-15-8350-6

Immobilization of molecular catalysts for artificial photosynthesis

Roll-to-Roll Compatible Quinoxaline-Based Polymers toward High Performance Polymer Solar Cells

Mun Ho Yang, Seo-Jin Ko, Na Gyeong An, Dong Ryeol Whang, Seung-Hoon Lee, Hyungju Ahn, Jin Young Kim, Doojin Vak, Sung Cheol Yoon, Dong Wook Chang

Journal of Materials Chemistry A, 2020, 8, 25208

Mechanically interlocked carbon nanotubes as a stable electrocatalytic platform for oxygen reduction

Dominik Wielend, Mariano Vera-Hidalgo, Hathaichanok Seelajaroen, Niyazi Serdar Sariciftci, Emilio M Pérez, Dong Ryeol Whang

ACS Applied Materials & Interfaces, 2020, 12, 32615

Unraveling Doping Capability of Conjugated Polymers for Strategic Manipulation of Electric Dipole Layer toward Efficient Charge Collection in Perovskite Solar Cells

Jaehong Park, Sang Eun Yoon, Jongmin Lee, Dong Ryeol Whang, Sang Yeon Lee, So Jeong Shin, Ji Min Han, Hyungtak Seo, Hui Joon Park, Jong H Kim, Bong‐Gi Kim

Advanced Functional Materials, 2020, 2001560

Effect of cyano substituent on photovoltaic properties of quinoxaline-based polymers

Shinta Lieviana Handoko, Ho Cheol Jin, Dong Ryeol Whang, Joo Hyun Kim, Dong Wook Chang

Journal of Industrial and Engineering Chemistry, 2020, 86, 244-250

High Efficiency Doping of Conjugated Polymer for Investigation of Intercorrelation of Thermoelectric Effects with Electrical and Morphological Properties

Sang Eun Yoon, Yeongkwon Kang, So Yeon Noh, Jeongwoo Park, Sang Yeon Lee, Jaehong Park, Dae Woon Lee, Dong Ryeol Whang, Taekyeong Kim, Gun-Ho Kim, Hyungtak Seo, Bong-Gi Kim, Jong H Kim

ACS Applied Materials & Interfaces, 2020, 12, 1, 1151-1158

Synthesis of Quinoxaline-Based Small Molecules Possessing Multiple Electron-Withdrawing Moieties for Photovoltaic Applications 

Jun Tae Kim, Ho Cheol Jin, Sella Kurnia Putri, Dong Ryeol Whang, Joo Hyun Kim, Dong Wook Chang 

Macromolecular Research, 2019, 27, 1268-1274

Effects of pyridine and pyrrole moieties on supercapacitive properties of imine-rich nitrogen-doped graphene

Min Seok Lee, Dong Ryeol Whang, Yeon Hwa Song, Jun Tae Kim, Mun Ho Yang, U Hyeok Choi, Dong Wook Chang

Carbon, 2019, 152, 915-923

Synthesis of quinoxaline-based polymers with multiple electron-withdrawing groups for polymer solar cells

Shinta Lieviana Handoko, Ho Cheol Jin, Dong Ryeol Whang, Sella Kurnia Putri, Joo Hyun Kim, Dong Wook Chang 

Journal of Industrial and Engineering Chemistry, 2019, 73, 192

A Highly Fluorescent and Photoresponsive Polymer Gel Consisting of Poly (acrylic acid) and Supramolecular Cyanostilbene Crosslinkers

Hyeong‐Ju Kim, Hyun Jun Lee, Jong Won Chung, Dong Ryeol Whang, Soo Young Park

Advanced Optical Materials, 2019, 7, 1801348

Enhanced open-circuit voltages of trifluoromethylated quinoxaline-based polymer solar cells

Sella Kurnia Putri, Ho Cheol Jin, Dong Ryeol Whang, Joo Hyun Kim, Dong Wook Chang

Organic Electronics, 2019, 65, 363

Synthesis of Trifluoromethylated Quinoxaline‐Based Polymers for Photovoltaic Applications

Sella Kurnia Putri, Yun Hwan Kim, Dong Ryeol Whang, Joo Hyun Kim, Dong Wook Chang

Macromolecular Rapid Communications, 2018, 39, 1800260

Synthesis of Quinoxaline-Based Small Molecules Possessing Multiple Electron-Withdrawing Moieties for Photovoltaic Applications

Jun Tae Kim, Ho Cheol Jin, Sella Kurnia Putri, Dong Ryeol Whang, Joo Hyun Kim, Dong Wook Chang

Macromolecular Research, 2019, 27, 1268

An electron-reservoir Re (I) complex for enhanced efficiency for reduction of CO2 to CO

Dong Ryeol Whang, Dogukan Hazar Apaydin, Soo Young Park, Niyazi Serdar Sariciftci

Journal of Catalysis, 2018, 363, 191

Artificial Photosynthesis: Learning from Nature

Dong Ryeol Whang and Dogukan Hazar Apaydin

ChemPhotoChem 2018, 2, 148

Sang Kyu Park, Jin Hong Kim, Tatsuhiko Ohto, Ryo Yamada, Andrew Jones, Dong Ryeol Whang, Illhun Cho, Sangyoon Oh, Jeffrey Hong, Ji Eon Kwon, Jong H. Kim, Yoann Olivier, Roland Fischer, Roland Resel, Johannes Gierschner, Hirokazu Tada, Soo Young Park, “Highly Luminescent 2D-type Slab Crystals Based on a Molecular Charge-Transfer Complex as Promising Organic Light-Emitting Transistor Materials”, Adv. Mater., 29, 1701346 (2018)

Min Seok Lee, Dong Ryeol Whang, Hyun-Jung Choi, Mun Ho Yang, Bong-Gi Kim, Jong-Beom Baek, Dong Wook Chang, “A facile approach to tailoring electrocatalytic activities of imine-rich nitrogen-doped graphene for oxygen reduction reaction”, Carbon, 122, 515 (2017)  †: equal contribution

Seolhee Jeon, Jung Hun Lee, Jai Il Park, Bonghyun Jo, Dong Ryeol Whang, Tae Kyu Ahn, Hui Joon Park, Sung Dong Kim, Wi Hyoung Lee, Bong-Gi Kim, “Manipulation of Chain Conformation for Optimum Charge Transport Pathway in Conjugated Polymers”, ACS Applied Materials & Interfaces, 9, 22757 (2017)

Jincheol Kim, Youngmin You, Seong-Jun Yoon, Jong H. Kim, Boseok Kang, Sang Kyu Park, Dong Ryeol Whang, Jangwon Seo, Kilwon Cho, and Soo Young Park, "Bistable Solid-State Fluorescence Switching in Photoluminescent Infinitely Coordinated Polymer", Chem. Eur. J., 23, 10017 (2017)

Sanghyuk Park, Ji Eon Kwon, Sun-Young Park, Oh-Hoon Kwon, Joon Ki Kim, Seong-Jun Yoon, Jong Won Chung, Dong Ryeol Whang, Sang Kyu Park, Dong Ki Lee, Du-Jeon Jang, Johannes Gierschner, and Soo Young Park, “Crystallization-Induced Emission Enhancement and Amplified Spontaneous Emission from CF3-containing Excited-State Intramolecular Proton Transfer Molecule”, Adv. Opt. Mater., 5, 1700353, (2017)

Sella Kurni Putria, Yun Hwan Kim, Dong Ryeol Whang, Min Seok Lee, Joo Hyun Kim, Dong Wook Chang, “Step-by-step improvement in photovoltaic properties of fluorinated quinoxaline-based low-band-gap polymers”, Org. Elec., 47, 14 (2017)

Jaekwan Kim, Dong Ryeol Whang,* Soo Young Park,* "Designing Highly Efficient CuI Photosensitizer for Photocatalytic H2 Evolution from Water", ChemSusChem, 10, 1883-1886, (2017)

Hiromu Kumagai, Leif Hammarström, Dong Ryeol Whang, Yuki Shinohara, Jose Martinez, Joshua Karlsson, Peter Summers, Christopher D Windle, Masanori Kodera, Richard Cogdell, Kristine Rodulfo Tolod, Dogukan Hazar Apaydin, Etsuko Fujita, Alexander Kibler, Fengtao Fan, Elizabeth A Gibson, Hisanao Usami, Akihide Iwase, Haruo Inoue, Akihiko Kudo, Devens Gust, Kazunari Domen, Flavia Cassiola, Katsuhiko Takagi, Sang Ook Kang, Akira Yamakata, Can Li, Licheng Sun, Hyunwoong Park, Young Soo Kang, Rengui Li, Fabio Di Fonzo, Tohru Setoyama, Osamu Ishitani, “Inorganic assembly catalysts for artificial photosynthesis: general discussion”, Faraday discussions, 198, 481 (2017)

Junjie Cui, Ji Eon Kwon, Hyeong-Ju Kim, Dong Ryeol Whang, Soo Young Park, "Smart Fluorescent Nanoparticles in Water Showing Temperature-Dependent Ratiometric Fluorescence Color Change", ACS Appl. Mater. Interfaces, 9 (3), 2883-2890 (2017)

Hiromu Kumagai, Leif Hammarström, Dong Ryeol Whang, Yuki Shinohara, Jose Martinez, Joshua Karlsson, Peter Summers, Christopher D Windle, Masanori Kodera, Richard Cogdell, Kristine Rodulfo Tolod, Dogukan Hazar Apaydin, Etsuko Fujita, Alexander Kibler, Fengtao Fan, Elizabeth A Gibson, Hisanao Usami, Akihide Iwase, Haruo Inoue, Akihiko Kudo, Devens Gust, Kazunari Domen, Flavia Cassiola, Katsuhiko Takagi, Sang Ook Kang, Akira Yamakata, Can Li, Licheng Sun, Hyunwoong Park, Young Soo Kang, Rengui Li, Fabio Di Fonzo, Tohru Setoyama, Osamu Ishitani, “Inorganic assembly catalysts for artificial photosynthesis: general discussion”, Faraday Discussions, 198, 481 (2017)

Won Sik Yoon, Dong Won kim, Jun-Mo Park, Illhun Cho, Oh Kyu Kwon, Dong Ryeol Whang, Jin Hong Kim, Jung-Hwa Park, Soo Young Park, "A Novel bis-Lactam Acceptor with Outstanding Molar Extinction Coefficient and Structural Planarity for Donor-Acceptor Type Conjugated Polymer", Macromolecules, 49 (22), 8489–8497, (2016)

Hyeong-Ju Kim, Dong Ryeol Whang, Johannes Gierschner, and Soo Young Park, "Highly Enhanced Fluorescence of Supramolecular Polymers Based on a Cyanostilbene Derivative and Cucurbit[8]uril in Aqueous Solution", Angew. Chem. Int. Ed., 55 (51), 15915–15919, (2016)

Dongha Kim, Dong Ryeol Whang,* Soo Young Park,* "Self-Healing of Molecular Catalyst and Photosensitizer on Metal-Organic Framework: Robust Molecular System for Photocatalytic H2 Evolution from Water", J. Am. Chem. Soc., 138 (28), 8698-8701, (2016)

Jin Hong Kim, Sang Kyu Park, Jong H. Kim, Dong Ryeol Whang, Won Sik Yoon, Soo Young Park, "Self-assembled organic single crystalline nanosheet for solution processed n-channel field-effect transistors", Adv. Mater., 28 (28), 6011-6015, (2016)

Hyeong-Ju Kim, Jin Hong Kim, Jangwon Seo, Jaehun Jung, Dong Ryeol Whang, and Soo Young Park, "Tuning the charge transport properties of dicyanodistyrylbenzene derivatives by the number of fluorine substituents", Synt. Met., 216, 51-58, (2016)

Sang Kyu Park, Ilhun Cho, Johannes Gierschner, Jinhong Kim, Jong H. Kim, Ji Eon Kwon, Oh Kyu Kwon, Dong Ryeol Whang, Jung-Hwa Park, Byeong-Kwan An, and Soo Young Park, "Stimuli-Responsive Reversible Fluorescence Switching in the Crystalline Donor-Acceptor Mixture Film: Mixed Stack Charge-Transfer Emission vs. Segregated Stack Monomer Emission", Angew. Chem. Int. Ed., 55(1), 203-207, (2016)

Dong Ryeol Whang and Soo Young Park, "Rational Design of Electron-Reservoir PtII Complex for Highly Efficient Photocatalytic Hydrogen Production from Water", ChemSusChem, 8, 3204-3207, (2015)

Michael Wykes, Sang Kyu Park, Santanu Bhattacharyya, Shinto Varghese, Ji Eon Kwon, Dong Ryeol Whang, Ilhun Cho, Reinhold Wannemacher, Larry Lüer, Soo Young Park, Johannes Gierschner, "Excited State Feature and Dynamics in a Distyrylbenzene Based Mixed Stack Donor-Acceptor Co-Crystal with Luminescent Charge Transfer Characteristics", J. Phys. Chem. Lett., 6, 3682-3687, (2015)

Hyeong-Ju Kim, Dong Ryeol Whang, Johannes Gierschner, Chong Han Lee, Soo Young Park, "High-Contrast Red–Green–Blue Tricolor Fluorescence Switching in Bicomponent Molecular Film", Angew. Chem. Int. Ed., 54 (14), 4330-4333, (2015)

Joachim Maier, Pengfei Liu, Xile Hu, Galen Stucky, Shi-Gang Sun, Liang Chen, Wei Han, Dong Ryeol Whang, Gang Chen, Chao Zhan, Jian He, Lee Cronin, Shihe Yang, Erwin Reisner, Lulu Long, Andrew Mount, Ram Seshadri, Xudong Yang, Fuping Pan, Hong Liu, Zhonghua Li, Zhongqun Tian, Heinz Frei, Jingshan Luo, Fei Li, Pingwu Du, Baohua Wang, Yu Li, Yicheng Zhao, Licheng Sun, Takashi Hisatomi, Can Li, Kai Zhu, Nam-Gyu Park, Huiqiong Wang, Michael Grätzel, “Solar cells and photocatalytic systems: general discussion”, Faraday Discussions, 176, 313 (2017)

Mina Kim, Dong Ryeol Whang, Johannes Gierschner, Soo Young Park, "A Distyrylbenzene Based Highly Efficient Deep Red/Near-Infrared Emitting Organic Solid ", Journal of Materials Chemistry C, 3, 231-234, (2015) – Front Cover Highlighted

Dong Ryeol Whang, Ken Sakai, and Soo Young Park, "Highly Efficient Photocatalytic Water Reduction with Robust Iridium(III) Photosensitizers Containing Arylsilyl Substituents.", Angew. Chem. Int. Ed., 52, 11612-11615 (2013)

Xiaolong Yang, Zuam Huang, Cheuk-Lam Ho, Guijiang, Dong Ryeol Whang, Chunliang Yao, Xianbin Xu, Soo Young Park, Chung Hin Chui, and Wai Yeung Wong, "Dynamic dualstage phosphprescence chromatic change in a diboryated iridium phosphor for fluoride ion sensing with concentration discrininating capability", RSC Advances, 6553-6563, (2013)

Dong Ryeol Whang, Youngmin You, Weon-Sik Chae, Jeongyun Heo, Sehoon Kim, and Soo Young Park, "Solid-State Phosphorescence-to-Fluorescence Switching in a Cyclometalated Ir(III) Complex Containing an Acid-Labile Chromophoric Ancillary Ligand: Implication for Multimodal Security Printing", Langmuir, 6;28,(44),15433-7, (2012)

Jeongyun Heo, Chang-Keun Lim, Dong Ryeol Whang, Jiyoung Shin, Seo Young Jeong, Soo Young Park, Ick Chan Kwon, and Sehoon Kim, "Self-Deprotonation and Colorization of 1,3-Bis(dicyanomethylidene)indan in Polar Media: A Facile Route to a Minimal Polymethine Dye for NIR Fluorescence Imaging ", Chem. Eur. J., 18(28), 8699-8704, (2012)

Xu Lin, Shiki Yagai, Akihide Kitamura, Dong Ryeol Whang, Soo Young Park, Young-Seo Park, Jang-Joo Kim, and Takashi Karatsu, "Small molecular host based on carbazole and m-terphenyl derivatives for efficient solution processed organic light-emitting diodes", Synth. Met., 162(3-4), 303-308, (2012)

Yunoh Jung, Jangwon Seo, Jong H. Kim, Dong Ryeol Whang, Se Hoon Ghim, Chong Rae Park, and Soo Young Park, "Fabrication of aligned microwire arrays of perylene bisimide by micromolding in capillary", Synth. Met., 160, 1287-1290, (2010)

Dong Ryeol Whang, Youngmin You, Se Hun Kim, Won-Ik Jeong, Young-Seo Park, Jang-Joo Kim, and Soo Young Park, "A Highly Efficient Wide-bandgap Host Material for Blue Electrophosphorescent Light-emitting Devices", Appl. Phys. Lett., 91, 233501, (2007)