1.      “Hydration of DNA Base Cations in the Gas Phase”, Kim, N. J.; Kim, Y. S.; Jeong, G.; Ahn, T. K.; Kim, S. K. Int. J. Mass Spectrometry 2002, 219, 11-21. 

2.      “Photovoltaic Properties of Self-Assembled Monolayers of Porphyrins and Phophyrin-Fullrene Dyads on ITO and Gold Surfaces”, Yamada, H.; Imahori, H.; Nishimura, Y.; Yamazaki, I.; Ahn, T. K.; Kim, S. K.; Kim, D.; Fukuzumi, S. J. Am. Chem. Soc. 2003, 125, 9129-9139. 

3.      “Singlet Excited State (S₁) of Higher Fullerenes C₇₆ and C₈₄: Correlation between Lifetime and HOMO-LUMO Energy Gap”, Cho, H. S.; Ahn, T. K.; Yang, S. I.; Jin, S. M.; Kim, D.; Kim, S. K.; Kim, H. D. Chem. Phys. Lett. 2003, 375, 292-298. 

4.      “Dihedral-Angle Modulation of meso-meso Linked Zn^II Diporphyrin through Diamine Coordination and Its Application to Reversible Switching of Excitation Energy Transfer”, Shinmori, H.; Ahn, T. K.; Cho, H. S.; Kim, D.; Yoshida, N.; Osuka, A. Angew. Chem. Int. Ed. 2003, 42, 2754-2758. 

5.      “Efficient Excitation Energy Transfer in Long Meso-Meso Linked Zn(II) Porphyrin Arrays Bearing a 5,15-Bisphenylethynylated Zn(II) Porphyrin Acceptor”, Aratani, N.; Cho, H. S.; Ahn, T. K.; Cho, S.; Kim, D.; Sumi, H.; Osuka, A. J. Am. Chem. Soc. 2003, 125, 9668-9681. 

6.      “Substituent Effects of Porphyrin Monolayers on the Structure and Photoelectrochemical Properties of Self-Assembled Monolayers of Porphyrin on Indium-Tin Oxide Electrode”, Imahori, H.; Hosomizu, K.; Mori, Y.; Sato, T.; Ahn, T. K.; Kim, S. K.; Kim, D.; Nishimura, Y.; Yamazaki, I.; Ishii, H.; Hotta, H.; Matano, Y. J. Phys. Chem. B 2003, 108, 5018-5025. 

7.      “Vectorial Electron Relay at ITO Electrodes Modified with Self-Assembled Monolayers of Ferrocene-Porphyrin-Fullerene Triads and Porphyrin-Fullerene Dyads for Molecular Photovoltaic Devices”, Imahori, H.; Kimura, M.; Hosomizu, K.; Sato, T.; Ahn, T. K.; Kim, S. K.; Kim, D.; Nishimura, Y.; Yamazaki, I.; Araki, Y.; Ito, O.; Fukuzumi, S. Chem. Eur. J. 2004, 10, 5111-5122. 

8.      “Novel Fullerene-Porphyrin-Fullerene Triad Linked by Metal Axial Coordination: Synthesis, X-ray Crystal Structure, and Spectroscopic Characterizations of trans-Bis([60]fullerenoacetato)tin(IV) porphyrin”, Kim, H. J.; Park, K.-M.; Ahn, T. K.; Kim, S. K.; Kim, K. S.; Kim, D.; Kim, H. J. Chem. Commun. 2004, 2594-2595. 

9.      “Porphyrin Boxes Constructed by Homochiral Self-Sorting Assembly: Optical Separation, Exciton Coupling, and Efficient Excitation Energy Migration”, Hwang I.-W.; Kamada, T.; Ahn, T. K.; Ko, D. M.; Nakamura, T.; Tsuda, A.; Osuka, A.; Kim. D., J. Am. Chem. Soc. 2004, 126, 16187-16198. 

10.  “A Dodecameric Porphyrin Wheel”, Peng, X.; Aratani, N.; Takagi, A.; Matsumoto, T.; Kawai, T.; Hwang, I.-W.; Ahn, T. K.; Kim, D.; Osuka, A. J. Am. Chem. Soc. 2004, 126, 4468-4469. 

11.  “Photovoltaic Cells using Composite Nanoclusters of Porphyrins and Fullerenes with Gold Nanoparticles”, Hasobe, T.; Imahori, H.; Kamat, P. V.; Ahn, T. K.; Kim, S. K.; Kim, D.; Fujimoto, A.; Hirakawa, T.; Fukuzumi, S. J. Am. Chem. Soc. 2005, 127, 1216-1228. Most-cited article 2005 in ACS publications. 

12.  “Enhancement of Light-Energy Conversion Efficiency by Multi-Porphyrin Arrays of Porphyrin-Peptide Oligomers with Fullerene Clusters”, Hasobe, T.; Kamat, P. V.; Troiani, V.; Solladie, N.; Ahn, T. K.; Kim, S. K.; Kim, D.; Kongkanard, A.; Kuwabata, S.; Fukuzumi, S. J. Phys. Chem. B 2005, 109,19-23. 

13.  “Directly meso-meso Linked Porphyrin Rings: Synthesis, Characterization, and Efficient Excitation Energy Hopping”, Nakamura, Y.; Hwang, I.-W.; Aratani, N.; Ahn, T. K.; Ko, D. M.; Takagi, A.; Kawai, T.; Matsumoto, T.; Kim, D.; Osuka, A. J. Am. Chem. Soc. 2005, 127, 236-246.  

14.  “Unusually High Performance Photovoltaic Cell Based on [60]Fullerene Metal Cluster-Porphyrin Dyad SAM on ITO electrode”, Cho, Y.-J.; Ahn, T. K.; Song, H.; Kim, K. S.; Seo, W. S.; Lee, C. Y.; Kim, S. K.; Park, J. T.; Kim, D. J. Am. Chem. Soc. Commun. 2005, 127, 2380-2381. 

15.   “Large Two-Photon Absorption (TPA) Cross-Section of Directly Linked Fused Diporphyrins”, Kim, D. Y.; Ahn, T. K.; Kwon, J. H.; Kim, D.; Aratani, N.; Maeda, S.; Osuka, A.; Shigeiwa, M.; Ikeue, T.;  J. Phys. Chem. A 2005, 109, 2996-2999. 

16.  “Excitation Energy Migration in A Dodecameric Porphyrin Wheel”, Hwang, I.-W.; Ko, D. M.; Ahn, T. K.; Yoon, Z. S.; Kim, D., J. Phys. Chem. B 2005, 109, 8643-8651. 

17.  “Excitation Energy Migration in Self-Assembled Cyclic Zinc(II) Porphyrin Arrays: A Close Mimicry of Natural Light Harvesting System", Hwang, I.-W., Park, M., Ahn, T. K., Yoon, Z. S., Ko, D. M., Kim, D., Ito, F., Ishibashi, Y., Khan, K. R., Nagasawa, Y., Miyasaka, H., Ikeda, C., Takahashi, R., Ogawa, K., Satake, A., Kobuke, Y., Chem. Eur. J. 2005, 11, 3753-3761. 

18.  “Effect of Conformational Heterogeneity on Excitation Energy Transfer Efficiency in Directly meso-meso Linked Zn(II) Porphyrin Arrays”, Ahn, T. K.; Yoon, Z. S.; Hwang, I.-W.; Kim, S. K.; Aratani, N.; Osuka, A.; Kim, D., J. Phys. Chem. B 2005, 109, 11223-11230. 

19.  “Comparative Photophysics of [26] and [28]Hexaphyrins(1.1.1.1.1.1): Large Two-Photon Absorption Cross Section of Aromatic [26]Hexaphyrins(1.1.1.1.1.1)”, Ahn, T. K.; Kwon, J. H.; Kim, D. Y.; Cho, D. W.; Jeong, D. H.; Kim, S. K.; Suzuki, M.; Osuka, A.; Kim, D., J. Am. Chem. Soc. 2005, 127, 12856-12861. 

20.  “Tribenzosubporphines: Synthesis and Characterizations”, Inokuma, Y.; Kwon, J. H.; Ahn, T. K.; Yoon, M.-C.; Kim, D.; Osuka, A. Angew. Chem. Int. Ed. 2006, 461, 961-964. 

21.  “Relationship between Two-Photon Absorption and the -Conjugation Pathway in Porphyrin Arrays through Dihedral Angle Control”, Ahn, T. K.; Kim, K. S.; Kim, D. Y.; Noh, S. B.; Aratani, N.; Ikeda, C.; Osuka, A.; Kim, D. J. Am. Chem. Soc. 2006, 128, 1700-1704. 

22.  “A Directly Fused Tetrameric Porphyrin Sheet and Its Anomalous Electronic Properties That Arise from the Planar Cyclooctatetraene Core”, Nakamura, Y.; Aratani, N.; Shinokubo, H.; Takagi, A.; Kawai, T.; Matsumoto, T.; Yoon, Z. S.; Kim, D. Y.; Ahn, T. K.; Kim, D.; Muranaka, A.; Kobayashi, N.; Osuka, A. J. Am. Chem. Soc. 2006, 128, 4119-4127. 

23.  “Relationship between Incoherent Excitation Energy Migration Processes and Molecular Structures in Zinc(II) Porphyrin Dendrimers”,Cho, S.; Li, W.-S.; Yoon, M.-C.; Ahn, T. K.; Jiang, D. –L.; Kim, J.; Aida,T.; Kim, D. Chem. Eur. J. 2006, 12, 7576-7584. 

24.  “Comparative Photophysical Properties of Free-base, bis-Zn(II), bis-Cu(II) and bis-Co(II) Doubly N-Confused Hexaphyrins (1.1.1.1.1.1)”, Kwon, J. H.; Ahn, T. K.; Yoon, M.-C.; Kim, D. Y.; Koh, M. K.; Suzuki, M.; Osuka, A; Kim, D. J. Phys. Chem. B 2006,. 110, 11683-11690.  

25.  “Direct spectroscopic observation of interligand energy transfer in cyclometalated heteroleptic iridium(III) complexes: A strategy for phosphorescence color tuning and white light generation”, You, Y; Kim K. S.; Ahn, T. K., Kim, D., Park, S. Y. J. Phys. Chem. C 2007, 111, 4052-4060. 

26.  “Evidence for wavelike energy transfer through quantum coherence in photosynthetic systems”, Engel, G. S.; Calhoun, T. R.; Read, E.; Ahn, T.-K.; Mancal, T.; Chung, Y.-C.; Blankenship, R. E.; Fleming, G. R. Nature 2007, 446, 782-786.   

27.  “Cross-peak-specific two-dimensional electronic spectroscopy”, Read, E.; Engel, G. S.; Calhoun, T. R.; Mancal, T.; Ahn, T.-K.; Blankenship, R. E.; Fleming, G. R. Proc. Nat’l Acad. Sci. USA 2007, 204, 14203-14208. 

28.  “Highly Phosphorescent Iridium Complexes with Chromophoric 2-(2-Hydroxyphenyl)oxazole-Based Ancillary Ligands: Interligand Energy-Harvesting Phosphorescence”, You, Y.; Seo, J.; Kim, S. H.; Kim, K. S.; Ahn, T. K.; Kim, D.; Park, S. Y. Inorg. Chem. 2008, 47, 1476-1487. 

29.  “Zeaxanthin radical cation formation in minor light-harvesting complexes of higher plant antenna”, Avenson, T.; Ahn, T.K.; Zigmantas, D.;Niyogi, K.K.; Li, Z.; Ballottari, M.; Bassi, R.; Fleming, G.R. J. Biol. Chem. 2008, 283, 3550. 

30.  “Architecture of a Charge-Transfer State Regulating Light Harvesting in a Plant Antenna Protein”, Tae Kyu Ahn, Thomas J. Avenson, Matteo Ballottari, Yuan-Chung Cheng, Krishna K. Niyogi, Roberto Bassi, and Graham R. Fleming, Science 2008, 320, 794-797. 

31.  “Kinetic Modeling of Charge-Transfer Quenching in the CP29 Minor Complex”,

Yuan-Chung Cheng, Tae Kyu Ahn, Thomas J. Avenson, Donatas Zigmantas, Krishna K. Niyogi, Matteo Ballottari, Roberto Bassi, and Graham R. Fleming, J. Phys. Chem. B 2008, 112, 13418-13423. 

   32. “Lutein Can Act as a Switchable Charge Transfer Quencher in the CP26 Light-harvesting Complex”, Avenson, T.; Ahn, T.K.; Niyogi, K.K.; Ballottari, M.; Bassi, R.; Fleming, G.R. J. Biol. Chem. 2009, 284, 2830-2835. 

B. S. in Chemistry, Seoul National University, Seoul, Korea
M. S. in Physical Chemistry, Seoul National University, Seoul, Korea
Thesis: Multi-photon Ionization Study on Potassium and Their Solvated Clusters.
Ph. D. in Physical Chemistry, Seoul National University, Seoul, Korea
Thesis: Photophysical Studies on Porphyrins, Fullerenes, and Nanoparticles.
Postdoc Fellow
Center for Ultrafast Optical Characteristics Control and Department of Chemistry,
Yonsei University, Seoul, KOREA
Postdoc Fellow (Current)
Lawrence Berkeley National Laboratory and Department of Chemistry, University of California, Berkeley