38. Parallel Triplet Formation Pathways in a Singlet Fission Material

Nilabja Maity†, Woojae Kim†, Naitik Panjwani, Arup Kundu, Kanad Majumder, Pranav Kasetty, Divji Mishra, Robert Bittl*, Jayashree Nagesh*, Jyotishman Dasgupta*, Andrew J. Musser*, Satish Patil* (†Contributed equally)

Nat. Commun. 2022, 13, 5244.

37. Ultrafast Symmetry-Breaking Charge Separation in a Perylene Bisimide Dimer Enabled by Vibronic Coupling and Breakdown of Adiabaticity

Yongseok Hong, Felix Schlosser, Woojae Kim, Frank Würthner*, Dongho Kim*

J. Am. Chem. Soc. 2022, 144, 15539-15548.

36. Real-time Observation of Structural Dynamics Triggering Excimer Formation in a Perylene Bisimide Folda‐dimer by Ultrafast Time-domain Raman Spectroscopy 

Yongseok Hong†, Woojae Kim†, Taeyeon Kim, Christina Kaufmann, Hyungjun Kim*, Frank Würthner*, Dongho Kim* (†Contributed equally)

Angew. Chem. Int. Ed. 2022, 61, e202114474. (Inside Cover)

35. Synthesis and Characterizations of 5,5′-Bibenzo[rst]pentaphene with Axial Chirality and Symmetry‐Breaking Charge Transfer

Xiushang Xu, Suman Gunasekaran, Scott Renken, Lorenzo Ripani, Dieter Schollmeyer, Woojae Kim, Massimo Marcaccio, Andrew J. Musser*, Akimitsu Narita*

Adv. Sci. 2022, 9, 2200004.

34. Tracking Ultrafast Reactions in Organic Materials through Vibrational Coherence: Vibronic Coupling Mechanisms in Singlet Fission

Woojae Kim, Andrew J. Musser*

Adv. Phys. X 2021, 6, 1918022.

33. Mode-Specific Vibrational Analysis of Exciton Delocalization and Structural Dynamics in Conjugated Oligomers 

Woojae Kim, Shinya Tahara, Hikaru Kuramochi, Satoshi Takeuchi, Taeyeon Kim, Tahei Tahara*, Dongho Kim*

Angew. Chem. Int. Ed. 2021, 60, 16999-17008. (Frontispiece)

32. Switching Resonance Character within Merocyanine Stacks and its Impact on Excited-State Dynamics

Taeyeon Kim, Seongsoo Kang, Eva Kirchner, David Bialas, Woojae Kim, Frank Würthner*, Dongho Kim*

Chem 2021, 7, 715-725.

31. Impact of Cyclic Strain on the Structural Relaxation Dynamics of Macrocyclic Thiophenes

Juwon Oh, Hyeyoung Joung, Woojae Kim, Jaesung Yang*, Dongho Kim*

J. Phys. Chem. C 2021, 125, 1947-1953.

30. Ultrafast Exciton Self-Trapping and Delocalization in Cycloparaphenylenes: The Role of Excited‐State Symmetry in Electron‐Vibrational Coupling

Juno Kim, Ryohei Kishi, Eiichi Kayahara, Woojae Kim, Shigeru Yamago*, Masayoshi Nakano*, Dongho Kim*

Angew. Chem. Int. Ed. 2020, 59, 16989-16996.

29. Efficient Multiexciton State Generation in Charge-Transfer-Coupled Perylene Bisimide Dimers via Structural Control

Yongseok Hong, Juno Kim, Woojae Kim, Christina Kaufmann, Hyungjun Kim, Frank Würthner*, Dongho Kim*

J. Am. Chem. Soc. 2020, 142, 7845-7857.

28. Tracking Structural Evolution during Symmetry-Breaking Charge Separation in Quadrupolar Perylene Bisimide with Time‐Resolved Impulsive Stimulated Raman Spectroscopy 

Woojae Kim, Taeyeon Kim, Seongsoo Kang, Yongseok Hong, Frank Würthner, Dongho Kim*

Angew. Chem. Int. Ed. 2020, 59, 8571-8578. (Inside Cover)

27. Two-Step Charge Separation Passing Through the Partial Charge-Transfer State in a Molecular Dyad

Taeyeon Kim, Woojae Kim, Olena Vakuliuk, Daniel T Gryko*, Dongho Kim*

J. Am. Chem. Soc. 2020, 142, 1564-1573.

26. Ultrafast Coherent Exciton Dynamics in Size-Controlled Perylene Bisimide Aggregates

Seongsoo Kang, Christina Kaufmann, Yongseok Hong, Woojae Kim, Agnieszka Nowak-Król, Frank Würthner*, Dongho Kim*

Struct. Dyn. 2019, 6, 064501.

25. Solvent-Modulated Charge-Transfer Resonance Enhancement in the Excimer State of a Bay-Substituted Perylene Bisimide Cyclophane

Woojae Kim, Agnieszka Nowak-Król, Yongseok Hong, Felix Schlosser, Frank Würthner*, Dongho Kim*

J. Phys. Chem. Lett. 2019, 10, 1919-1927.

24. Solvent and Structural Fluctuations Induced Symmetry-Breaking Charge Transfer in a Porphyrin Triad

Taeyeon Kim, Woojae Kim, Hirotaka Mori, Atsuhiro Osuka, Dongho Kim

J. Phys. Chem. C 2018, 122, 19407-19415.

23. Ping-Pong Energy Transfer in a Boron Dipyrromethane Containing Pt(II)–Schiff Base Complex: Synthesis, Photophysical Studies, and Anti-Stokes Shift Increase in Triplet–Triplet Annihilation Upconversion

Syed S Razi, Yun Hee Koo, Woojae Kim, Wenbo Yang, Zhijia Wang, Habtom Gobeze, Francis D’Souza, Jianzhang Zhao*, Dongho Kim*

Inorg. Chem. 2018, 57, 4877-4890.

22. Ultrafast Exciton Delocalization, Localization, and Excimer Formation Dynamics in a Highly Defined Perylene Bisimide Quadruple π-Stack

Christina Kaufmann†, Woojae Kim†, Agnieszka Nowak-Król, Yongseok Hong, Dongho Kim*, Frank Würthner* (†Contributed equally)

J. Am. Chem. Soc. 2018, 47, 4279-4294.

21. Excited-State Structural Relaxation and Exciton Delocalization Dynamics in Linear and Cyclic π-Conjugated Oligothiophenes

Kyu Hyung Park, Woojae Kim, Jaesung Yang, Dongho Kim*

Chem. Soc. Rev. 2018, 47, 4279-4294.

20. 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*, Dongho Kim*

Nat. Chem. 2017, 9, 1243-1248.

19. S2 Fluorescence from [26]Hexaphyrin Dianion

Won-Young Cha, Woojae Kim, Hirotaka Mori, Tomoki Yoneda, Atsuhiro Osuka*, Dongho Kim*

J. Phys. Chem. Lett. 2017, 8, 3795-3799.

18. Broadband Visible Light Harvesting N^N Pt(II) Bisacetylide Complex with Bodipy and Naphthalene Diimide Ligands: Förster Resonance Energy Transfer and Intersystem Crossing

Peili Wang, Yun Hee Koo, Woojae Kim, Wenbo Yang, Xiaoneng Cui, Wei Ji, Jianzhang Zhao*, Dongho Kim*

J. Phys. Chem. C 2017, 121, 11117-11128.

17. Control and Switching of Aromaticity in Various All-Aza-Expanded Porphyrins: Spectroscopic and Theoretical Analyses

Young Mo Sung, Juwon Oh, Won-Young Cha, Woojae Kim, Jong Min Lim, Min-Chul Yoon, Dongho Kim*

Chem. Rev. 2017, 117, 2257-2312.

16. A Description of Vibrational Modes in Hexaphyrins: Understanding the Aromaticity Reversal in the Lowest Triplet State 

Young Mo Sung, Juwon Oh, Koji Naoda, Taegon Lee, Woojae Kim, Manho Lim*, Atsuhiro Osuka*, Dongho Kim*

Angew. Chem. Int. Ed. 2016, 128, 12109-12113. (Inside Cover)

15. ortho-Phenylene-Bridged Cyclic Oligopyrroles: Conformational Flexibilities and Optical Properties

Fengkun Chen, Takayuki Tanaka*, Yongseok Hong, Woojae Kim, Dongho Kim*, Atsuhiro Osuka*

Chem. Eur. J. 2016, 22, 10597-10606.

14. Direct Observation of Excimer-Mediated Intramolecular Electron Transfer in a Cofacially-Stacked Perylene Bisimide Pair

Jooyoung Sung, Agnieszka Nowak-Król, Felix Schlosser, Benjamin Fimmel, Woojae Kim, Dongho Kim*, Frank Würthner*

J. Am. Chem. Soc. 2016, 138, 9029-9032.

13. β-to-β 2,5-Pyrrolylene-Linked Cyclic Porphyrin Oligomers

Yutao Rao, Jun Oh Kim, Woojae Kim, Guangming Zhong, Bangshao Yin, Mingbo Zhou, Hiroshi Shinokubo, Naoki Aratani, Takayuki Tanaka, Shubin Liu, Atsuhiro Osuka*, Dongho Kim*, Jianxin Song*

Chem. Eur. J. 2016, 22, 8801-8804.

12. Porphyrin Analogues of a Trityl Cation and Anion

Kenichi Kato, Woojae Kim, Dongho Kim*, Hideki Yorimitsu*, Atsuhiro Osuka*

Chem. Eur. J. 2016, 22, 7041-7045.

11. Aromaticity Reversal in the Lowest Excited Triplet State of Archetypical Möbius Heteroannulenic Systems 

Juwon Oh, Young Mo Sung, Woojae Kim, Shigeki Mori, Atsuhiro Osuka*, Dongho Kim*

Angew. Chem. Int. Ed. 2016, 55, 6487-6491. (Back Cover)

10. Modulation of Symmetry-Breaking Intramolecular Charge-Transfer Dynamics Assisted by Pendant Side Chains in π-Linkers in Quadrupolar Diketopyrrolopyrrole Derivatives

Woojae Kim, Jooyoung Sung, Marek Grzybowski, Daniel T. Gryko*, Dongho Kim*

J. Phys. Chem. Lett. 2016, 7, 3060-3066.

9. Chain-Length-Dependent Exciton Dynamics in Linear Oligothiophenes Probed Using Ensemble and Single-Molecule Spectroscopy

Tae-Woo Kim, Woojae Kim, Kyu Hyung Park, Pyosang Kim, Jae-Won Cho, Hideyuki Shimizu, Masahiko Iyoda*, Dongho Kim*

J. Phys. Chem. Lett. 2016, 4, 452-458.

8. Switchable π-electronic network of bis (α-oligothienyl)-substituted hexaphyrins between helical versus rectangular circuit

Juwon Oh, Hirotaka Mori, Young Mo Sung, Woojae Kim, Atsuhiro Osuka*, Dongho Kim*

Chem. Sci. 2016, 7, 2239-2245.

7. The Role of Linkers in the Excited-State Dynamic Planarization Processes of Macrocyclic Oligothiophene 12-Mers

Woojae Kim, Jooyoung Sung, Kyu Hyung Park, Hideyuki Shimizu, Mika Imamura, Minwoo Han, Eunji Sim*, Iyoda Masahiko*, Dongho Kim*

J. Phys. Chem. Lett. 2015, 6, 4444-4450.

6. Excited‐State Dynamic Planarization of Cyclic Oligothiophenes in the Vicinity of a Ring‐to‐Linear Excitonic Behavioral Turning Point

Kyu Hyung Park, Pyosang Kim, Woojae Kim, Hideyuki Shimizu, Minwoo Han, Eunji Sim*, Masahiko Iyoda*, Dongho Kim*

Angew. Chem. Int. Ed. 2015, 54, 12711-12715.

5. Switching between Aromatic and Antiaromatic 1, 3-Phenylene-Strapped [26]-and [28] Hexaphyrins upon Passage to the Singlet Excited-state

Young Mo Sung, Juwon Oh, Woojae Kim, Hirotaka Mori, Dongho Kim*, Atsuhiro Osuka*

J. Am. Chem. Soc. 2015, 137, 11856-11859.

4. Stable [48]‐,[50]‐, and [52] Dodecaphyrins (1.1. 0.1. 1.0. 1.1. 0.1. 1.0): The Largest Hückel Aromatic Molecules 

Takanori Soya, Woojae Kim, Dongho Kim*, Atsuhiro Osuka*

Chem. Eur. J. 2015, 21, 8341-8346. (Inside Back Cover)

3. A Möbius Aromatic [28] Hexaphyrin Bearing a Diethylamine Group: A Rigid but Smooth Conjugation Circuit

Tomohiro Higashino, Takanori Soya, Woojae Kim, Dongho Kim*, Atsuhiro Osuka*

Angew. Chem. Int. Ed. 2015, 54, 5456-5459.

2. Relationship between Dynamic Planarization Processes and Exciton Delocalization in Cyclic Oligothiophenes

Pyosang Kim, Kyu Hyung Park, Woojae Kim, Tomoya Tamachi, Masahiko Iyoda*, Dongho Kim*

J. Phys. Chem. Lett. 2015, 6, 451-456.

1. 5, 20-Bis(α-oligothienyl)-Substituted [26] Hexaphyrins Possessing Electronic Circuits Strongly Perturbed by Meso-Oligothienyl Substituents

Hirotaka Mori, Masaaki Suzuki, Woojae Kim, Jong Min Lim, Dongho Kim*, Atsuhiro Osuka*

Chem. Sci. 2015, 6, 1696-1700.