Jung Research Group

Mechanism of CO₂ Electrolysis with Heterogenized Molecular Iridium Catalysts Deciphered Using Operando Spectroscopy

Naonari Sakamoto,* Keita Sekizawa, Shunsuke Sato,* Jieun Jung, Taku Wakabayashi, Kenji Kamada, Takamasa Nonaka, Takeshi Uyama, Takeshi Morikawa, Susumu Saito*

J. Am. Chem. Soc. 2025, 147, 47859–47866.

No matter what energy input: tetradentate PNNP-ligated iridium complexes for CO₂ reduction

Jieun Jung* and Susumu Saito*

Chem.–Eur. J. 2025, 31, e202500328.

Selective electroreduction of CO₂ to formate by a heterogenized Ir complex using H₂O as an electron/hydrogen source

Jieun Jung,* Keun Woo Lee, Naonari Sakamoto, Selvam Kaliyamoorthy, Taku Wakabayashi, Kenji Kamada, Keita Sekizawa, Shunsuke Sato, Tomiko M. Suzuki, Takeshi Morikawa, and Susumu Saito*

EES Catal. 2025, 3, 254–258.

Ferrocenyl PNNP Ligands-Controlled Chromium Complex-Catalyzed Photocatalytic Reduction of CO₂ to Formic Acid

Taku Wakabayashi, Yohei Kametani, Eimi Tanahashi, Yoshihito Shiota, Kazunari Yoshizawa, Jieun Jung,* and Susumu Saito*

J. Am. Chem. Soc. 2024, 146, 25963–25975.

Photocatalytic CO₂ Reduction Using an Osmium Complex as a Panchromatic Self-Photosensitized Catalyst: Utilization of Blue, Green, and Red Light

Kenji Kamada, Jieun Jung,* Chihiro Yamada, Taku Wakabayashi, Keita Sekizawa, Shunsuke Sato, Takeshi Morikawa, Shunichi Fukuzumi, and Susumu Saito*

Angew. Chem. Int. Ed. 2024, 63, e202403886.

Importance of steric bulkiness of iridium photocatalysts with PNNP tetradentate ligands for CO₂ reduction

Kenji Kamada, Jieun Jung,* Yohei Kametani, Taku Wakabayashi, Yoshihito Shiota, Kazunari Yoshizawa, Seong Hee Bae, Manami Muraki, Masayuki Naruto, Keita Sekizawa, Shunsuke Sato, Takeshi Morikawa, and Susumu Saito*

Chem. Commun. 2022, 58, 9218–9221.

Photocatalytic CO₂ Reduction Using an Iron–Bipyridyl Complex Supported by Two Phosphines for Improving Catalyst Durability

Taku Wakabayashi, Kenji Kamada, Keita Sekizawa, Shunsuke Sato, Takeshi Morikawa, Jieun Jung,* and Susumu Saito*

Organometallics 2022, 41, 1865−1871.

A Highly Durable, Self-Photosensitized Mononuclear Ruthenium Catalyst for CO₂ Reduction

Kenji Kamada, Hiroko Okuwa, Taku Wakabayashi, Keita Sekizawa, Shunsuke Sato, Takeshi Morikawa, Jieun Jung,* and Susumu Saito*

Synlett 2022, 33, 1137–1141.

Recent Advances in Light-Driven Carbon–Carbon Bond Formation via Carbon Dioxide Activation

Jieun Jung* and Susumu Saito*

Synthesis 2021, 53, 3263–3278.

Photocatalytic CO₂ Reduction Using a Robust Multifunctional Iridium Complex toward the Selective Formation of Formic Acid

Kenji Kamada, Jieun Jung,* Taku Wakabayashi, Keita Sekizawa, Shunsuke Sato, Takeshi Morikawa, Shunichi Fukuzumi, and Susumu Saito*

J. Am. Chem. Soc. 2020, 142, 10261–10266.

Development of Catalytic Reduction of Renewable Carbon Resources Using Well–Elaborated Organometallic Complexes with PNNP Tetradentate Ligands

Shota Yoshioka, Jieun Jung, and Susumu Saito*

J. Syn. Org. Chem. Jpn. 2020, 78, 856–866.

Photocatalytic hydrogen evolution using a Ru(II)-bound heteroaromatic ligand as a reactive site

Takuya Sawaki, Tomoya Ishizuka, Nanase Namura, Dachao Hong, Mayuko Miyanishi, Yoshihito Shiota, Hiroaki Kotani, Kazunari Yoshizawa,* Jieun Jung, Shunichi Fukuzumi, and Takahiko Kojima*

Dalton Trans. 2020, 49, 17230–17242.

Spatiotemporal control of amide radicals during photocatalysis

Shogo Mori, Takahiro Aoki, Kaliyamoorthy Selvam, Shunichi Fukuzumi, Jieun Jung, and Susumu Saito*

ChemRxiv. 2020, Preprint.

Photocatalytic Oxygenation Reactions with a Cobalt Porphyrin Complex Using Water as an Oxygen Source and Dioxygen as an Oxidant

Young Hyun Hong^‡, Ji Won Han^‡, Jieun Jung, Tatsuo Nakagawa, Yong-Min Lee, Wonwoo Nam*, and Shunichi Fukuzumi*

J. Am. Chem. Soc. 2019, 141, 9155−9159.

Photodriven Oxidation of Water by Plastoquinone Analogs with a Nonheme Iron Catalyst

Young Hyun Hong, Jieun Jung, Tatsuo Nakagawa, Namita Sharma, Yong-Min Lee, Wonwoo Nam*, and Shunichi Fukuzumi*

J. Am. Chem. Soc. 2019, 141, 6748−6754.

Long-Lived Photoexcited State of a Mn(IV)-Oxo Complex Binding Scandium Ions That is Capable of Hydroxylating Benzene

Namita Sharma, Jieun Jung, Kei Ohkubo, Yong-Min Lee, Mohamed E. ElKhouly, Wonwoo Nam*, and Shunichi Fukuzumi*

J. Am. Chem. Soc. 2018, 140, 8405–8409.

Thermal and photocatalytic oxidation of organic substrates by dioxygen with water as an electron source

Shunichi Fukuzumi*, Yong-Min Lee*, Jieun Jung, and Wonwoo Nam*

Green Chem. 2018, 20, 948–963.

Photocatalytic oxidation of benzene to phenol using dioxygen as an oxygen source and water as an electron source in the presence of a cobalt catalyst

Ji Won Han^‡, Jieun Jung^‡, Yong-Min Lee, Wonwoo Nam*, and Shunichi Fukuzumi*

Chem. Sci. 2017, 8, 7119–7125.

Bicyclic Baird-type aromaticity

Won-Young Cha, Taeyeon Kim, Arindam Ghosh, Zhan Zhang, Xian-Sheng Ke, Rashid Ali, Vincent M. Lynch, Jieun Jung, Woojae Kim, Sangsu Lee, Shunichi Fukuzumi*, Jung Su Park*, Jonathan L. Sessler*, Tavarekere K. Chandrashekar*, and Dongho Kim*

Nature Chem. 2017, 9, 1243–1248.

Multi-Electron Oxidation of Anthracene Derivatives by Nonheme Manganese(IV)-Oxo Complexes

Namita Sharma, Jieun Jung, Yong-Min Lee, Mi Sook Seo, Wonwoo Nam*, and Shunichi Fukuzumi*

Chem. Eur. J. 2017, 23, 7125–7131.

Effects of Lewis Acids on Photoredox Catalysis

Shunichi Fukuzumi*, Jieun Jung, Yong-Min Lee, and Wonwoo Nam*

Asian J. Org. Chem. 2017, 6, 397–409.

A Chromium(III)-Superoxo Complex as a Three-Electron Oxidant with a Large Tunneling Effect in Multi-Electron Oxidation of NADH Analogues

Tarali Devi, Yong-Min Lee, Jieun Jung, Muniyandi Sankaralingam, Wonwoo Nam*, and Shunichi Fukuzumi*

Angew. Chem. Int. Ed. 2017, 56, 3510–3515.

Switchover of the Mechanism between Electron Transfer and Hydrogen-Atom Transfer for a Protonated Manganese(IV)–Oxo Complex by Changing Only the Reaction Temperature

Jieun Jung, Surin Kim, Yong-Min Lee, Wonwoo Nam*, and Shunichi Fukuzumi*

Angew. Chem. Int. Ed. 2016, 55, 7450–7454.

Photocatalytic Oxygenation of Substrates by Dioxygen with Protonated Manganese(III) Corrolazine

Jieun Jung, Heather M. Neu, Pannee Leeladee, Maxime A. Siegler, Kei Ohkubo, David P. Goldberg*, and Shunichi Fukuzumi*

Inorg. Chem. 2016, 55, 3218−3228.

Homogeneous and Heterogeneous Photocatalytic Water Oxidation by Persulfate

Shunichi Fukuzumi*, Jieun Jung, Yusuke Yamada*, Takahiko Kojima*, and Wonwoo Nam*

Chem. Asian J. 2016, 11, 1138–1150.

Enhanced Electron Transfer Reactivity of a Nonheme Iron(IV)–Imido Complex as Compared to the Iron(IV)-Oxo Analogue

Anil Kumar Vardhaman, Yong-Min Lee, Jieun Jung, Kei Ohkubo, Wonwoo Nam*, and Shunichi Fukuzumi*

Angew. Chem. Int. Ed. 2016, 55, 3709–3713.

Light-Driven, Proton-Controlled, Catalytic Aerobic C–H Oxidation Mediated by a Mn(III) Porphyrinoid Complex

Heather M. Neu, Jieun Jung, Regina A. Baglia, Maxime A. Siegler, Kei Ohkubo, Shunichi Fukuzumi*, and David P. Goldberg*

J. Am. Chem. Soc. 2015, 137, 4614−4617.

Catalytic Two-Electron Reduction of Dioxygen by Ferrocene Derivatives with Manganese(V) Corroles

Jieun Jung, Shuo Liu, Kei Ohkubo, Mahdi M. Abu-Omar*, and Shunichi Fukuzumi*

Inorg. Chem. 2015, 54, 4285−4291.

Activationless Electron Self-Exchange of High-Valent Oxo and Imido Complexes of Chromium Corroles

Shuo Liu, Jieun Jung, Kei Ohkubo, Scott D. Hicks, Curt J. Bougher, Mahdi M. Abu-Omar*, and Shunichi Fukuzumi*

Inorg. Chem. 2015, 54, 9223−9228.

Photocatalytic Oxygenation of 10-Methyl-9,10-dihydroacridine by O₂ with Manganese Porphyrins

Jieun Jung, Kei Ohkubo, David P. Goldberg*, and Shunichi Fukuzumi*

J. Phys. Chem. A 2014, 118, 6223−6229.

Photochemical Oxidation of a Manganese(III) Complex with Oxygen and Toluene Derivatives to Form a Manganese(V)-Oxo Complex

Jieun Jung, Kei Ohkubo, Katharine A. Prokop-Prigge, Heather M. Neu, David P. Goldberg*, and Shunichi Fukuzumi*

Inorg. Chem. 2013, 52, 13594−13604.

Production of hydrogen peroxide as a sustainable solar fuel from water and dioxygen

Satoshi Kato, Jieun Jung, Tomoyoshi Suenobu, and Shunichi Fukuzumi*

Energy Environ. Sci. 2013, 6, 3756–3764.

Water-soluble mononuclear cobalt complexes with organic ligands acting as precatalysts for efficient photocatalytic water oxidation

Dachao Hong, Jieun Jung, Jiyun Park, Yusuke Yamada, Tomoyoshi Suenobu, Yong-Min Lee, Wonwoo Nam*, and Shunichi Fukuzumi*

Energy Environ. Sci. 2012, 5, 7606–7616.