Papers

Papers
(57) R. Fukuda, K. Kishihata, R. Man-nami, H. Atsumi, B. Arcadi, Dae Gwi Kim, M. Shibuta, “Oscillator-driven broadband femtosecond transient absorption and reflectance microspectroscopy using photonic crystal fiber supercontinuum probing” Submitted.

(56) M. Shibuta, M. Schaal, M. Grünewald, J. Brandhoff, F. Otto, R. Forker, and T. Fritz, “Tuning of Photoexcited Electron Dynamics at Corrugated Monolayer h-BN/Metal Interfaces” Submitted.

(55)K. Kamada, K. Shinokita, R. Kitaura, A. Paarmann, M. Shibuta, T. Kumagai, J. Nishida, “Ultrafast nano-imaging and optical control of hyperbolic phonon polaritons at hBN/WS2 heterojunctions
DOI:10.48550/arXiv.2605.19408, Nano Letters accepted.

(54) K. Kamada, D. Kim, M. Shibuta, “Visualization of Internal Plasmonic Wave Photosensitized by Quantum Dots” Nano Letters26, 7808–7815（2026）accepted for publication,
DOI: 10.1021/acs.nanolett.6c02051.

(53)T. Irie, K. Sasaki, Y. Tomoyasu, K. Sun, G, Sourav, M. Nozaki, S. Tomihari, T. Kawawaki, M. Shibuta, T. Ranjit, Y. Zhao, S. Das, Y. Negishi, “Synergistic Light Harvesting and Catalysis in a Photoactive π-Scaffolded Covalent Organic Framework–Re Hybrid for CO2-to-CO Photoreduction” ACS Catalysis, 16, 9084–9097 (2026) Accepted.
DOI: 10.1021/acscatal.6c00204.

(52) Y. Osada, R. Sato, T. Nishikawa, M. Tokita, T. Kamoshida, T. Masubuchi, M. Shibuta, M. Hatanaka, A. Nakajima, ”From Si16 to Ge16: Geometric Origins of Robustness in Binary Cage Superatoms on Organic Substrates”
The Journal of Physical Chemistry C 130, 3518–3525 (2026).
DOI:10.1021/acs.jpcc.5c07801.

(51) M. Shibuta, T. Ohta, T. Kamoshida,K. Yamagiwa, H. Tsunoyama, T. Inoue, T. Masubuchi, A. Nakajima, “Photoemission Spectroscopy and Microscopy for Ta@Si16 Superatom and their Assembled-Layers”
Nanoscale 16, 21837–21846 (2024).
DOI:10.1039/D4NR02778G

(50) M. Shibuta, A. Nakajima, “Imaging of Ultrafast Photoexcited Electron Dynamics in Pentacene Nanocrystals Grown on Graphite Substrate”
Nanoscale 16, pp. 12397-12405 (2024). Selected as a Back Cover
DOI:10.1039/D4NR00720D

(49) T. Inoue, K. Mizoguchi, M. Tokita, M. Shibuta, M. Nakaya, T. Eguchi, A. Nakajima, “Localized Surface Plasmon Resonances of Size-Selected Large Silver Nanoclusters (n = 70~100) Soft-Landed on a C60 Organic Substrate” Physical Chemistry Chemical Physics 26, 16597-16602 (2024).
DOI:10.1039/D4CP01151A

(48) K. Terasaka, T. Kamoshida, T. Ichikawa, T. Yokoyama, M. Shibuta, A. Nakajima, “Alkaline Earth Metal Superatom of W@Si16: Characterization of Group 6 Metal Encapsulating Si16 Cage on Organic Substrates”
The Journal of American Chemical Society 146, pp. 9605-9613 (2024). Selected as a Cover Art
DOI:10.1021/jacs.3c12619

(47) Y. Chiga, W. Suzuki, R. Takahata, E. Kobiyama, H. Tahara, Y.-K Kanemitsu, M. Shibuta, M. Sakamoto, T. Teranishi, “Tuning of Photoinduced Electron-Transfer Direction in Porphyrin-Protected Gold Clusters”
The Journal of Physical Chemistry C 128, pp. 3824-3831 (2024).
DOI:10.1021/acs.jpcc.3c06402

(46) S. Nojima, N. Murase, D. Kim, H. S. Kato, M. Akai-Kasaya, T. Yamada, M. Shibuta, “Probing of Photocarrier Electrons and Excitons at an Organic Monolayer Film Studied by Two-Photon Photoemission Spectroscopy”
The Journal of Physical Chemistry C 128, pp. 2043-2051 (2024). Selected as a Supplementary Cover Art
DOI:10.1021/acs.jpcc.3c07596

(45) M. Shibuta, A. Nakajima, “Two-Photon Photoemission Spectroscopy and Microscopy for Electronic and Plasmonic Characterizations of Molecularly Designed Organic Surfaces”
The Journal of Physical Chemistry Letters (Perspective) 14, pp. 3285–3295 (2023).
DOI:10.1021/acs.jpclett.3c00043

(44) M. Shibuta, A. Nakajima, “Spectroscopic imaging of photoexcited states at a polycrystalline copper metal surface via two-photon photoelectron emission microscopy"
Chemical Physics Letters 804, 13909 (2022).
DOI:10.1016/j.cplett.2022.139909

(43) T. Kamoshida, M. Shibuta, T. Ohta, H. Tsunoyama, T. Eguchi, A. Nakajima, “Molecularly Optimized Cluster–Surface Interaction for Group 3-5 Metals-Encapsulating Silicon Cage Superatom; on C and Coronene-Derivative Substrates”
The Journal of Physical Chemistry C 126, 10889-10899 (2022).
DOI:10.1021/acs.jpcc.2c02196

(42) H. Li, M. Shibuta, T. Yamada, H. Hojo, H. Kato, T. Teranishi, M. Sakamoto, “Band engineering leads to LSPR tuning based on diverse-phased Cu2-xSySe1-y alloyed nanocrystals”
The Journal of Physical Chemistry C 126, 8107−8112 (2022).
DOI:10.1021/acs.jpcc.2c01149

(41) M. Shibuta, T. Inoue, T. Kamoshida, A. Nakajima, “Al13 and B@Al12 Superatoms on a Molecularly Decorated Substrate"
Nature Communications 13, pp. 1336-1–8 (2022). press released, selected as a front picture of web page, The Penmark (慶應義塾大学英文広報誌)で紹介
DOI:10.1038/s41467-022-29034-9

(40) M. Shibuta, M. Huber, T. Kamoshida, G. Niedner-Schatteburg, A. Nakajima, “Size-Dependent Oxidative Stability of Missing or Excessive Silicon Atoms for Tantalum-Atom Encapsulating Si16 Superatom: Reactivity Based on a Nanocluster-Surface Interaction”
The Journal of Physical Chemistry C 126, pp. 4423–4432 (2022).
DOI:10.1021/acs.jpcc.1c10895

(39) T. Yokoyama, T. Chiba, N. Hirata, M. Shibuta, A. Nakajima, “Electrical Conduction of Superatom Thin Films Composed of Group-V-Metal-Encapsulating Silicon-Cage Nanoclusters”
The Journal of Physical Chemistry C 125, pp. 1199–1209 (2021).
DOI:10.1021/acs.jpcc.1c03591

(38) M. Shibuta, K. Yamamoto, T. Ohta, T. Inoue, K. Mizoguchi, M. Nakaya, T. Eguchi, A. Nakajima, “Confined Hot Electron Relaxation at the Molecular Heterointerface of the Size-Selected Plasmonic Noble Metal Nanocluster and Layered C60”
ACS Nano 15, pp. 1199–1209 (2021).
DOI:10.1021/acsnano.0c08248

(37) M. Shibuta, R. Takano, A. Nakajima, “Interfacial and Surface Oxidations for Ta-Encapsulating Si16 Cage Superatoms (Ta@Si16) on a Strontium Titanate Substrate”
The Journal of Physical Chemistry C 124, pp28108−28115. (2020).
DOI:10.1021/acs.jpcc.0c08813

(36) K. Stallberg, M. Shibuta, U. Höfer, “Temperature effects on the formation and the relaxation dynamics of metal-organic interface states”
Physical Review B 102, pp. 121401(R)-1−5 (2020).
DOI:10.1103/PhysRevB.102.121401

(35) T. Inoue, M. Shibuta, T. Suzuki, A. Nakajima, “Occupied and Unoccupied Levels of a Half and Perfluorinated Rubrene Thin Films Probed by One- and Two-Photon Photoemission”
The Journal of Physical Chemistry C 124, pp. 12409−12416 (2020).
DOI:10.1021/acs.jpcc.0c01162

(34) K. Yamagiwa, M. Shibuta, A. Nakajima, “Visualization of Surface Plasmon Polaritons Propagating at the Buried Organic-Metal Interface with Silver Nanocluster Sensitizers”
ACS Nano 14, pp. 2044–2052 (2020).
DOI:10.1021/acsnano.9b08653

(33) M. Shibuta, K. Yamamoto, H. Guo, J. Zhao, A. Nakajima, “Highly Dispersive Nearly Free Electron Bands at a 2D-assembled C60 Monolayer”
The Journal of Physical Chemistry C 124, pp. 734–741 (2020).
DOI:10.1021/acs.jpcc.9b10006

(32) T. Eguchi, N. Hirata, M. Shibuta, H. Tsunoyama, A. Nakajima, “Formation of Highly-Ordered Semiconducting Anthracene Monolayers Rigidly Connected to Insulating Alkanethiolate Thin Films”
The Journal of Physical Chemistry C 122, pp. 26080–26087 (2018).
DOI:10.1021/acs.jpcc.8b08907

(31) H. Tsunoyama, H. Ito, M. Komori, R. Kobayashi, M. Shibuta, T. Eguchi, A. Nakajima, “Liquid-phase Catalysis by Single-size Palladium Nanoclusters Supported on Strontium Titanate: Size-specific Catalysts for Suzuki-Miyaura Coupling”
Catalysis Science & Technology 8, pp. 5827–5834 (2018).
DOI:10.1039/c8cy01645c

(30) M. Shibuta, T. Niikura, T. Kamoshida, H. Tsunoyama, A. Nakajima, “Nitric oxide oxidation of Ta encapsulating Si cage nanocluster superatom (Ta@Si16) deposited on an organic substrate; Si cage collapse indicator”
Physical Chemistry Chemical Physics 20, pp. 26273–26279 (2018). Selected as 2018 PCCP HOT Articles
DOI:10.1039/c8cp05580g

(29) M. Shibuta, T. Kamoshida, T. Ohta, H. Tsunoyama, A. Nakajima, “Oxidative Reactivity of Alkali-Like Group-5 Metal-Encapsulating Si16 Cage Nanoclusters; M@Si16 (M = V, Nb, Ta)”
Communications Chemistry 1, pp. 50-1–50-9 (2018).
DOI:10.1038/s42004-018-0052-9

(28) H. Tsunoyama, M. Shibuta, M. Nakaya, T. Eguchi, A. Nakajima, “Synthesis and Characterization of Metal-Encapsulating Si16 Cage Superatoms”
Accounts of Chemical Research 51, pp. 1735–1745 (2018) Selected as Front Cover
DOI:10.1021/acs.accounts.8b00085

(27) M. Shibuta, M. Ogura, T. Eguchi, and A. Nakajima, “Energy Level Alignment of Organic Molecules with Chemically Modified Alkanethiolate Self-Assembled Monolayers”
The Journal of Physical Chemistry C 121, pp. 27399–27405 (2017).
DOI:10.1021/acs.jpcc.7b07955

(26) H. Tsunoyama, H. Akatsuka, M. Shibuta, T. Iwasa, Y. Mizuhata, N. Tokitoh, A. Nakajima, “Development of Integrated Dry-Wet Synthesis Method for Metal Encapsulating Silicon Cage Superatoms of M@Si16 (M = Ti and Ta)”
The Journal of Physical Chemistry C 121, pp. 20507–20516 (2017).
DOI:10.1021/acs.jpcc.7b06449

(25) M. Shibuta, K. Yamamoto, K. Yamagiwa, T. Eguchi, A. Nakajima, “Photoexcited Electron Transfer Properties at C60 Film on Graphite and on Au(111) Interfaces Studied by Two-Photon Photoemission Spectroscopy”
Chemistry Letters 46, pp. 1528–1531 (2017).
DOI:10.1246/cl.170641

(24) K. Yamagiwa, M. Shibuta, A. Nakajima, “Two-photon photoelectron emission microscopy for surface plasmon polaritons at the Au(111) surface decorated with alkanethiolate self-assembled monolayers”
Physical Chemistry Chemical Physics 19, pp. 13455–13461 (2017).
DOI:10.1039/C7CP01693J

(23) M. Shibuta, N. Hirata, T. Eguchi, A. Nakajima, “Photoexcited State Confinement in Two-Dimensional Crystalline Anthracene Monolayer at Room Temperature”
ACS Nano 11, pp. 4307–4314 (2017).
DOI:10.1021/acsnano.7b01506

(22) N. Hirata, S. Suga, Y. Noguchi, M. Shibuta, H. Tsunoyama, T. Eguchi, A. Nakajima, “Highly Ordered Self-Assembled Monolayers of Carboxy- and Ester-Terminated Alkanethiols on Au(111): Infrared Absorption and Hyperthermal-Deposition Experiments with Cr(benzene)2 Ions”
The Journal of Physical Chemistry C 121, pp 6736–6747 (2017).
DOI:10.1021/acs.jpcc.7b00292

(21) M. Shibuta, K. Yamagiwa, T. Eguchi, A. Nakajima, “Imaging and spectromicroscopy of photocarrier electron dynamics in C60 fullerene thin films”
Applied Physics Letters 109, pp. 203111-1~203111-5 (2016).
DOI:10.1063/1.4967380

(20) M. Shibuta, K. Yamamoto, T. Ohta, M. Nakaya, T. Eguchi, A. Nakajima, “Direct observation of photocarrier electron dynamics in C60 films on graphite by time-resolved two-photon photoemission”
Scientific Reports 6, pp. 35853-1–35853-9 (2016).
DOI:10.1038/srep35853

(19) T. Ohta, M. Shibuta, H. Tsunoyama, T. Eguchi, A. Nakajima, “Charge transfer complexation of Ta-encapsulating Ta@Si16 superatom with C60”
The Journal of Physical Chemistry C 120, pp. 15265–15271 (2016).
DOI:10.1021/acs.jpcc.6b04955

(18) M. Shibuta, T. Ohta, M. Nakaya, H. Tsunoyama, T. Eguchi, A. Nakajima, “Chemical Characterization of an Alkali-Like Superatom Consisting of a Ta-Encapsulating Si16 Cage”
Journal of the American Chemical Society (Communication), 137, pp. 14015–14018 (2015). (Highlighted as JACS Spotlights).
DOI:10.1021/jacs.5b08035

(17) M. Shibuta, N. Hirata, R. Matsui, M. Nakaya, T. Eguchi, A. Nakajima, “Excitation and Relaxation Dynamics of Two-Dimensional Photo-Excited Electrons on Alkanethiolate Self-Assembled Monolayers”
The Journal of Physical Chemistry C 119, pp. 22945–22953 (2015).
DOI:10.1021/ACS.JPCC.5B06549

(16) M. Ogura, M. Shibuta, T. Eguchi, A. Nakajima, “Electronic states of titanyl phthalocyanine films on alkanethiolate self-assembled monolayers probed by two-photon photoemission”
Journal of Electron Spectroscopy and Related Phenomena 195, pp. 272–277 (2014).
DOI:10.1016/j.elspec.2014.06.011

(15) M. Shibuta, N. Hirata, T. Eguchi, A. Nakajima, “Probing of an Adsorbate-Specific Excited State on an Organic Insulating Surface by Two-Photon Photoemission Spectroscopy”
Journal of the American Chemical Society 136, pp. 1825–1831 (2014).
DOI:10.1021/ja4088456

(14) T. Yamada, M. Isobe, M. Shibuta, H. S. Kato, T. Munakata, “Spectroscopic Investigation of Unoccupied States in Nano- and Macroscopic Scale: Naphthalene Overlayers on Highly Oriented Pyrolytic Graphite Studied by Combination of Scanning Tunnelling Microscopy and Two Photon Photoemission”
The Journal of Physical Chemistry C 118, pp. 1035–1041 (2014).
DOI:10.1021/JP4097875

(13) N. Wada, M. Shibuta, H. Shimazaki, N. Wada, K. Yamamoto, K. Kojima, “Fluorescence properties and relaxation processes of Tb3+ ions in ZnCl2-based glasses”
Material Research Bulletin 48, pp. 4947–4952 (2013).
DOI:10.1016/j.materresbull.2013.07.030

(12) M. Shibuta, T. Eguchi, A. Nakajima, “Imaging and characterizing long-range surface plasmon polariton propagating in sub-mm scale by two-color two-photon photoelectron emission microscopy”
Plasmonics 8, pp. 1411–1415 (2013).
DOI:10.1007/s11468-013-9554-6

(11) N. Hirata, M. Shibuta, T. Eguchi, A. Nakajima, “Excited electron dynamics at ferrocene terminated self-assembled monolayers on Au(111): Lengthened lifetime of image potential state”
Chemical Physics Letters 561-562, pp. 131–136 (2013).
DOI:10.1016/j.cplett.2013.01.053

(10) T. Ohta, M. Shibuta, H. Tsunoyama, Yuichi Negishi, T. Eguchi, A. Nakajima, “Size and Structure Dependence of Electronic States in Thiolate-Protected Gold Nanoclusters of Au25(SR)18, Au38(SR)24, and Au144(SR)60”
The Journal of Physical Chemistry C 117, pp. 3674–3679 (2013).
DOI:10.1021/jp400785f

(9) M. Shibuta, T. Eguchi, Y. Watanabe, J.-Y. Son, H. Oji, A. Nakajima, “Probing buried organic-organic and metal organic heterointerfaces by hard x-ray photoelectron spectroscopy”
Applied Physics Letters 101, pp. 221603-1–221603-4 (2012).
DOI:10.1063/1.4768940

(8) M. Nakaya, M. Shikishima, M. Shibuta, N. Hirata, T. Eguchi, A. Nakajima, “Molecular-Scale and Wide-Energy-Range Tunnelling Spectroscopy on Self-Assembled Monolayers of Alkanethiol Molecules”
ACS Nano 6, pp. 8728–8734 (2012).
DOI:10.1021/nn302405r

(7) N. Hirata, M. Shibuta, R. Matsui, A. Nakajima, “Electronic States of Alkanethiolate Self-Assembled Monolayers on Au(111) Studied by Two-Photon Photoemission Spectroscopy”
The Journal of Physical Chemistry C 116, pp. 13623–13628 (2012).
DOI:10.1021/jp302545r

(6) K. Schubert, A. Damm, S. V. Eremeev, M. Marks, M. Shibuta, W. Berthold, J. Güdde, A. G. Borisov, S. S. Tsirkin, E. V. Chulkov, U. Höfer, “Momentum-resolved electron dynamics of image-potential states on Cu and Ag surfaces”
Physical Review B 85, pp. 205431-1–205431-9 (2012).
DOI:10.1103/PhysRevB.85.205431

(5) M. Shibuta, N. Hirata, Ryo Matsui, T. Eguchi, A. Nakajima, “Charge Separation at the Molecular Monolayer Surface: Observation and Control of the Dynamics”
The Journal of Physical Chemistry Letters 3, pp. 981–985 (2012).
DOI:10.1021/jz3002579

(4) M. Shibuta, K. Miyakubo, T. Yamada, T. Munakata, “Angle- and Time-Resolved Two-Photon Photoemission Spectroscopy for Unoccupied Levels of Lead Phthalocyanine Film”
The Journal of Physical Chemistry C 115, pp. 19269–19273 (2011).
DOI:10.1021/jp205922q

(3) T. Yamada, M. Shibuta, Y. Ami, Y. Takano, A. Nonaka, K. Miyakubo, T. Munakata, “Novel Growth of Naphthalene Overlayer on Cu(111) Studied by STM, LEED, and 2PPE”
The Journal of Physical Chemistry C 114, pp. 13334–13339 (2010).
DOI:10.1021/jp1045194

(2) M. Shibuta, K. Yamamoto, K. Miyakubo, T. Yamada, T. Munakata, “Resonant effects on two-photon photoemission spectroscopy: Line widths and intensities of occupied and unoccupied features for lead phthalocyanine films on graphite”
Physical Review B 81, pp. 115426-1–115426-8 (2010).
DOI:10.1103/PhysRevB.81.115426

(1) M. Shibuta, K. Yamamoto, K. Miyakubo, T. Yamada, T. Munakata, “Vibrationally resolved two-photon photoemission spectroscopy for lead phthalocyanine film on graphite”
Physical Review B 80, pp. 113310-1–113310-4 (2009).
DOI:10.1103/PhysRevB.80.113310