2023
Original papers
1. Intricate Reaction Pathways on CH3NH3PbI3 Photocatalysts in Aqueous Solution Unraveled by Single-Particle Spectroscopy
A. Takeuchi, Y. Kumabe, T. Tachikawa*
J. Phys. Chem. Lett. 2023, 14(10), 2565-2572.
2. Solvates of a dianisyl-substituted donor–acceptor-type benzothiadiazole:
mechanochromic, vapochromic, and acid-responsive multicolor luminescence
T. Yagi, T. Tachikawa, S. Ito*
CrystEngComm 2023, 25(16), 2379-2389.
2. Size-Controlled Synthesis of Luminescent Few-Atom Silver Clusters via Electron Transfer in Isostructural Redox-Active Porous Ionic Crystals
N. Haraguchi, N. Ogiwara, Y. Kumabe, S. Kikkawa, S. Yamazoe, T. Tachikawa*,
S. Uchida*
Small 2023, on the web. (DOI: 10.1002/smll.202300743)
2022
Original papers
1. Binary dopant segregation enables hematite-based heterostructures for highly
efficient solar H2O2 synthesis
Z. Zhang, T. Tsuchimochi, T. Ina, Y. Kumabe, S. Muto, K. Ohara, H. Yamada,
S. L. Ten-no, T. Tachikawa*
Nat. Commun. 2022, 13, Article number: 1499. (selected as Editors' Highlights)
2. Terahertz Spectroscopic Measurements and Solid-State Density Functional
Calculations on CH3NH3PbBr3 Perovskites: Short-Range Order of Methylammonium
F. Zhang, I. Karimata, H.-W. Wang, T. Tachikawa*, K. Tominaga*, M. Hayashi*,
T. Sasaki
J. Phys. Chem. C 2022, 126(1), 339-348.
3. Mechano- and Thermo-responsive Luminescence of Crystalline Thienylbenzothiadiazole
Derivatives: Stepwise Hypsochromic Switching of Near-Infrared Emission
R. Yoshida, T. Tachikawa*, S. Ito*
Cryst. Growth Des. 2022, 13(11), 547-558.
4. Manipulation of charge carrier flow in Bi4NbO8Cl nanoplate photocatalyst with metal loading
K. Ogawa, R. Sakamoto, C. Zhong, H. Suzuki, K. Kato, O. Tomita, K. Nakashima,
A. Yamakata, T. Tachikawa, A. Saeki, H. Kageyama*, R. Abe*
Chem. Sci. 2022, 22(1), 3118-3128.
5. HNb3O8/g-C3N4 nanosheet composite membranes with twodimensional heterostructured nanochannels
achieve enhanced water permeance and photocatalytic activity
S. Imoto, K. Nakagawa*, C. Hu, T. Yoshioka, T. Shintani, A. Matsuoka, E.
Kamio, T. Tachikawa, S. C. E. Tsang, H. Matsuyama*
Chem. Eng. J. 2022, 442(1), Article number: 136254.
6. Extension of the mechanoresponsive luminescence shift via formation of a doped organic crystal
R. Yoshida, T. Tachikawa*, Suguru Ito*
Chem. Commun. 2022, 58(48), 6781-6784.
7. Tunable mechanochromic luminescence via surface protonation of pyridyl-substituted imidazole crystals
R. Kubota, Y. Yuan, R. Yoshida, T. Tachikawa*, S. Ito*
Mater. Adv. 2022, 3(14), 5826-5835.
8. Device Lifetime Improvement and Efficiency of Upconverted Blue Electrochemiluminescence From 9,10-Diphenylanthracene With DNA/Ru(bpy)32+ Hybrid Film
R. Ozawa, K. Nakamura, T. Tachikawa, N. Kobayashi*
J. Imag. Soc. Jpn. 2022, 61(6), 562-569.
2021
Original papers
1. In Situ Exploration of the Structural Transition during Morphology‐ and Efficiency‐Conserving Halide Exchange on a Single Perovskite Nanocrystal
I. Karimata, T. Tachikawa*
Angew. Chem. Int. Ed. 2021, 60(5), 2548-2553.
2. Organic photostimulated luminescence associated with persistent spin-correlated radical pairs
M. Sakurai, R. Kabe,* M. Fuki, Z. Lin, K. Jinnai, Y. Kobori, C. Adachi,
T. Tachikawa*
Commun. Mater. 2021, 2, Article number: 74.
3. Dynamic Symmetry Conversion in Mixed-Halide Hybrid Perovskite upon Illumination
S. Tominaka*, I. Karimata, T. Matsuoka, M. Sakamoto, T. Nakajima, K. Ohara,
T. Tachikawa*
ACS Energy Lett. 2021, 6, 3858-3863.
4. In Situ Exploration of Stimulus-Induced Emission Changes in Mechanochromic
Dyes
M. Yamashita, S. Nagai, S. Ito*, T. Tachikawa*
J. Phys. Chem. Lett. 2021, 12(32), 7826-7831.
5. Multi-color mechanochromic luminescence of three polymorphic crystals
of a donor-acceptor-type benzothiadiazole derivative
S. Ito*, S. Nagai, T. Ubukata, T. Tachikawa
CrystEngComm. 2021, 23(34), 5899-5907.
6. Mechanochromic Luminescence and Solid-State Circularly Polarized Luminescence
of a Chiral Diamine-Linked Bispyrene
S. Ito,* R. Sekine, M. Munakata, M. Asami, T. Tachikawa, D. Kaji, K. Mishima,
Y. Imai*
ChemPhotoChem 2021, 5(10), 920-925 (selected as front cover picture and cover profile).
7. Mechanochromic Luminescence (MCL) of Purely Organic Two-Component Dyes:
Wide-Range MCL over 300 nm and Two-Step MCL by Charge-Transfer Complexation
S. Ito*, R. Sekine, M. Munakata, M. Yamashita, T. Tachikawa*
Chem. Eur. J. 2021, 27(56), 13982-13990. (selected as cover picture)
8. Formation of Mixed-Valence Luminescent Silver Clusters via Cation-Coupled
Electron-Transfer in a Redox-Active Ionic Crystal Based on a Dawson-type
Polyoxometalate with Closed Pores
N. Haraguchi, T. Okunaga, Y. Shimoyama, N. Ogiwara, S. Kikkawa, S. Yamazoe,
M. Inada, T. Tachikawa, S. Uchida*
Eur. J. Inorg. Chem. 2021, 2021(16), 1531-1535. (selected as front cover)
9. Crystal phase-dependent generation of mobile OH radicals on TiO2: Revisiting the photocatalytic oxidation mechanism of anatase and rutile
J. Y. Hwang, G.-h. Moon, B. Kim, T. Tachikawa, T. Majima, S. Hong, K. Cho,
W. Kim, W. Choi*
Appl. Catal. B 2021, 289, 119905.
2020
Original papers
1. Ultra-Narrow Depletion Layers in Hematite Mesocrystal-Based Photoanode for Boosting Multihole Water Oxidation
Z. Zhang, H. Nagashima, T. Tachikawa*
Angew. Chem. Int. Ed. 2020, 59(23), 9047–9054 (selected as hot paper and inside cover picture).
2. TiO2 superstructures with oriented nanospaces: A strategy for efficient and
selective photocatalysis
Y. Murakami, T. Kamegawa, Y. Kobori, T. Tachikawa*
Nanoscale 2020, 12(11), 6420-6428.
3. Unraveling Hidden Correlations between Molecular Diffusivity and Reactivity in Ruthenium Complex-Modified Mesoporous Silica
T. Watase, M. Sohmiya, Z. Zhang, Y. Kobori, T. Tachikawa*
J. Phys. Chem. C 2020, 124(39), 21502-21511.
2019
Original papers
1. Interfacial oxygen vacancies yielding long-lived holes in hematite mesocrystal-based
photoanodes
Z. Zhang, I. Karimata, H. Nagashima, S. Muto, K. Ohara, K. Sugimoto, T.
Tachikawa*
Nat. Commun. 2019, 10, Article number: 4832.
2. Charge Carrier Dynamics in Sr-Doped NaTaO3 Photocatalysts Revealed by Deep Ultraviolet Single-Particle Microspectroscopy
S. Mizutani, I. Karimata, L. An, T. Sato, Y. Kobori, H. Onishi*, T. Tachikawa*
J. Phys. Chem. C 2019, 123(20), 12592-12598.
3. Transient Electron Spin Polarization Imaging of Heterogeneous Charge-Separation Geometries at Bulk-Heterojunction Interfaces in Organic Solar Cells
Y. Kobori*, T. Ako, S. Oyama, T. Tachikawa, K. Marumoto
J. Phys. Chem. C 2019, 123(22), 13472-13481.
4. Structural Dynamics of Lipid Bilayer Membranes Explored by Magnetic Field Effect Based Fluorescence Microscopy
M. Sakurai, Y. Kobori, T. Tachikawa*
J. Phys. Chem. B 2019, 123(50), 10896-10902.
5. Efficient and versatile mechanochromic luminescence of phenanthroimidazolylbenzothiadiazoles: tricolor switching and directional control over the chromism
S. Nagai, M. Yamashita, T. Tachikawa*, T. Ubukata, M. Asami, S. Ito*
J. Mater. Chem. C 2019, 7(17), 4988-4998.
6. Mechanistic Insights into Photochemical Reactions on CH3NH3PbBr3 Perovskite Nanoparticles from Single-Particle Photoluminescence Spectroscopy
Y. Kimura, I. Karimata, Y. Kobori, T. Tachikawa*
ChemNanoMat 2019, 5(3), 340-345. (Special Issue: Perovskite Nanocrystals)
7. Rapid formation of small mixed-valence luminescent silver clusters via
cation-coupled electron-transfer in a redox-active porous ionic crystal
based on dodecamolybdophosphate
S. Uchida*, T. Okunaga, Y. Harada, S. Magira, Y. Noda, T. Mizuno, T. Tachikawa
Nanoscale 2019, 11(12), 5460-5466.
2018
Original papers
1. Several Orders of Magnitude Difference in Charge-Transfer Kinetics Induced
by Localized Trapped Charges on Mixed-Halide Perovskites
I. Karimata, K. Ohta, Y. Kobori, T. Tachikawa*
ACS Appl. Mater. Interfaces 2018, 10(43), 37057-37066.
2. Time-Resolved EPR Study on Singlet-Fission Induced Quintet Generation and
Subsequent Triplet Dissociation in TIPS-Phenyl-Tetracene Aggregates
H. Nagashima, S. Kawaoka, Y. Matsui, T. Tachikawa, H. Ikeda*, Y. Kobori*
J. Photopolym. Sci. Technol. 2018, 31(2), 163-167.
3. Singlet-Fission-Born Quintet State: Sublevel Selections and Trapping
by Multiexciton Thermodynamics
H. Nagashima, S. Kawaoka, S. Akimoto, T. Tachikawa, Y. Matsui, H. Ikeda,
Y. Kobori*
J. Phys. Chem. Lett. 2018, 9(19), 5855-5861.
4. Charge-Transfer Character Drives Möbius Antiaromaticity in the Excited
Triplet State of Twisted [28]Hexaphyrin
F. Ema, M. Tanabe, S. Saito, T. Yoneda, K. Sugisaki, T. Tachikawa, S. Akimoto,
S. Yamauchi, K. Sato*, A. Osuka*, T. Takui*, Y. Kobori*
J. Phys. Chem. Lett. 2018, 9(10), 2685-2690.
5. Controlled Synthesis of Gold Nanoparticles on Fluorescent Nanodiamond via
Electron-Beam-Induced Reduction Method for Dual-Modal Optical and Electron
Bioimaging
M. Morita*, T. Tachikawa, S. Seino, K. Tanaka, T. Majima*
ACS Appl. Nano Mater. 2018, 1(1), 355-363.
Reviews
1. The Development of Functional Mesocrystals for Energy Harvesting, Storage,
and Conversion
P. Zhang, T. Tachikawa*, M. Fujitsuka, T. Majima*
Chem. Eur. J. 2018, 24(24), 6295-6307.
2017
Original papers
1. Direct Observation of Charge Collection at Nanometer-Scale Iodide-Rich Perovskites during Halide Exchange Reaction on CH3NH3PbBr3
I. Karimata, Y. Kobori, T. Tachikawa*
J. Phys. Chem. Lett. 2017, 8(8), 1724-1728.
2. Topotactic Epitaxy of SrTiO3 Mesocrystal Superstructures with Anisotropic Construction for Efficient
Overall Water Splitting
P. Zhang, T. Ochi, M. Fujitsuka, Y. Kobori, T. Majima*, T. Tachikawa*
Angew. Chem. Int. Ed. 2017, 56(19), 5299-5303.
3. Regulated Electron Tunneling of Photoinduced Primary Charge-Separated State in the Photosystem II Reaction Center
M. Hasegawa, H. Nagashima, R. Minobe, T. Tachikawa, H. Mino*, Y. Kobori*
J. Phys. Chem. Lett. 2017, 8(6), 1179-1184.
4. Time-Resolved EPR Study on Photoinduced Charge-Transfer Trap State in Thiophene-Thiazolothiazole
Copolymer Film
Y. Yamamoto, T. Ako, T. Tachikawa, I. Osaka, Y. Kobori*
J. Photopolym. Sci. Technol. 2017, 30(5), 551-555.
2016
Original papers
1. Crystal-Face-Dependent Charge Dynamics on a BiVO4 Photocatalyst Revealed by Single-Particle Spectroelectrochemistry
T. Tachikawa,* T. Ochi, Y. Kobori
ACS Catal. 2016, 6(4), 2250-2256.
2. Atomic Layer Deposition-Confined Nonstoichiometric TiO2 Nanocrystals with Tunneling Effects for Solar Driven Hydrogen Evolution
P. Zhang, T. Tachikawa,* M. Fujitsuka, T. Majima*
J. Phys. Chem. Lett. 2016, 7(7), 1173-1179.
3. In Situ Fluorine Doping of TiO2 Superstructures for Efficient Visible-Light Driven Hydrogen Generation
P. Zhang, T. Tachikawa,* M. Fujitsuka, T. Majima*
ChemSusChem 2016, 9(6), 617-623.
4. Geometries, Electronic Couplings and Hole Dissociation Dynamics of Photoinduced Electron-Hole Pairs in Polyhexylthiophene-Fullerene Dyads Rigidly Linked by Oligophenylenes
T. Miura, R. Tao, S. Shibata, T. Umeyama, T. Tachikawa, H. Imahori*, Y. Kobori*
J. Am. Chem. Soc. 2016, 138(18), 5879–5885.
5. Time Resolved EPR Study on Photoinduced Long-Range Charge-Separated State in Protein: Electron Tunneling Mediated by Arginine Residue in Human Serum Albumin
M. Fuki, H. Murai, T. Tachikawa, Y. Kobori*
J. Phys. Chem. B 2016, 120(19), 4365–4372.
6. Morphology Effect on Geometry of Photoinduced Charge-Separated State in
P3HT:PCBM Blend Films as Studied by Time-Resolved EPR Spectroscopy
T. Miura, T. Tachikawa, Y. Kobori*
J. Photopolym. Sci. Technol. 2016, 29(4), 561–564.
2015
Original papers
1. Surface Charge Trapping in Organolead Halide Perovskites Explored by Single-Particle
Photoluminescence Imaging
T. Tachikawa,* I. Karimata, Y. Kobori
J. Phys. Chem. Lett. 2015, 6, 3195-3201.
2. Plasmon-induced spatial electron transfer between single Au nanorod and
ALD-coated TiO2: dependence on TiO2 thickness
Z. Zheng, T. Tachikawa, T. Majima*
Chem. Commun. 2015, 51(76), 14373-14376.
3. The unprecedented J-aggregate formation of rhodamine moieties induced
by 9-phenylanthracenyl substitution
S. Kim, M. Fujitsuka, N. Tohnai, T. Tachikawa, I Hisaki, M. Miyata, T.
Majima*
Chem. Commun. 2015, 51(58), 11580-11583.
4.Selective photoredox activity on specific facet-dominated TiO2 mesocrystal superstructures incubated with directed nanocrystals
P. Zhang, T. Tachikawa,* Z. Bian, T. Majima*
Appl. Catal. B 2015, 176-177, 678–686.
5. Plasmon-Enhanced Formic Acid Dehydrogenation Using Anisotropic Pd−Au Nanorods
Studied at the Single-Particle Level
Z. Zheng, T. Tachikawa, T. Majima*
J. Am. Chem. Soc. 2015, 137(2), 948–957.
6. Efficient charge separation on 3D architectures of TiO2 mesocrystals packed with a chemically exfoliated MoS2 shell in synergetic hydrogen evolution
P. Zhang, T. Tachikawa,* M. Fujitsuka, T. Majima*
Chem. Commun. 2015, 51(33), 7187–7190.
2014
Original papers
1. A nanocomposite superstructure of metal oxides with effective charge transfer
interfaces
Z. Bian, T. Tachikawa*, P. Zhang, M. Fujitsuka, T. Majima*
Nat. Commun. 2014, 5, Article number: 4038.
2. Au/TiO2 Superstructure-Based Plasmonic Photocatalysts Exhibiting Efficient
Charge
Z. Bian, T. Tachikawa*, P. Zhang, M. Fujitsuka, T. Majima*
J. Am. Chem. Soc. 2014, 136(1), 458–465
3. Single-Particle Study of Pt-Modified Au Nanorods for Plasmon-Enhanced Hydrogen
Generation in Visible to Near-Infrared Region
Z. Zheng, T. Tachikawa*, T. Majima*
J. Am. Chem. Soc. 2014, 136(19), 6870–6873
4. Far-Red Fluorescence Probe for Monitoring Singlet Oxygen during Photodynamic
Therapy
S. Kim, T. Tachikawa, M. Fujitsuka, T. Majima*
J. Am. Chem. Soc. 2014, 136(33), 11707–11715.
5. Molecular-Level Understanding of the Photocatalytic Activity Difference
between Anatase and Rutile Nanoparticles
W. Kim, T. Tachikawa, G.-h. Moon, T. Majima, W. Choi*
Angew. Chem. Int. Ed. 2014, 53(51), 14036–14041.
6. Efficient charge separation and photooxidation on cobalt phosphate-loaded
TiO2 mesocrystal superstructures
T. Tachikawa*, P. Zhang, Z. Bian, T. Majima*
J. Mater. Chem. A 2014, 2(10), 3381–3388.
Review
1. Metal oxide mesocrystals with tailored structures and properties for energy
conversion and storage applications
T. Tachikawa*, T. Majima*
NPG Asia Materials 2014, 6, e100; doi:10.1038/am.2014.21.
Book
1. T. Tachikawa, T. Majima, "Single-molecule reactive oxygen species detection in photocatalytic reactions", in The Chemistry of Peroxides, Vol. 3, Patai Chemistry Series of Functional Groups, edited by Alexander Greer and Joel F. Liebman, John Wiley & Sons, Inc., The Atrium, Southern Gate, Chichester, West Sussex PO19 8SQ, UK, 421–436 (2014).
2013
Original papers (selected)
1. Super-Resolution Mapping of Reactive Sites on Titania-Based Nanoparticles
with Water-Soluble Fluorogenic Probes
T. Tachikawa*, T. Yonezawa, T. Majima*
ACS Nano 2013, 7(1), 263–275.
2. Single-Molecule Fluorescence Detection of Effective Adsorption Sites at
the Metal Oxide−Solution Interface
T. Tachikawa*, T. Ohsaka, Z. Bian, T. Majima*
J. Phys. Chem. C 2013, 117(21), 11219–11228.
3. Promoting water photooxidation on transparent WO3 thin films using an alumina overlayer
W. Kim, T. Tachikawa, D. Monllor-Satoca, H.-i. Kim, T. Majim, W. Choi
Energy Environ. Sci. 2013, 6(12), 3732–3739.
2012
Original papers (selected)
1. Superstructure of TiO2 Crystalline Nanoparticles Yields Effective Conduction Pathways for Photogenerated
Z. Bian, T. Tachikawa*, T. Majima*
J. Phys. Chem. Lett. 2012, 3(11), 1422–1427.
2. Single-molecule charge transfer dynamics in dye-sensitized p-type NiO solar
cells: influences of insulating Al2O3 layers
Z. Bian, T. Tachikawa*, S.-C. Cui, M. Fujitsuka, T. Majima*
Chem. Sci. 2012, 3(2), 370–379.
3. Photocatalytic oxidation surfaces on anatase TiO2 crystals revealed by single-particle chemiluminescence imaging
T. Tachikawa*, T. Majima*
Chem. Commun. 2012, 48(27), 3300–3302.
4. Interfacial electron transfer dynamics in dye-modified graphene oxide nanosheets
studied by single-molecule fluorescence spectroscopy
T. Tachikawa*, S.-C. Cui, M. Fujitsuka, T. Majima*
Phys. Chem. Chem. Phys. 2012, 14(12), 4244–4249.
Review
1. Single-Molecule, Single-Particle Approaches for Exploring the Structure
and Kinetics of Nanocatalysts
T. Tachikawa,* T. Majima
Langmuir 2012, 28(24), 8933–8943.
2011
Original papers (selected)
1. Evidence for Crystal-Face-Dependent TiO2 Photocatalysis from Single-Molecule Imaging and Kinetic Analysis
T. Tachikawa*, S. Yamashita, T. Majima*
J. Am. Chem. Soc. 2011, 133(18), 7197–7204.
2. pH-Induced Intramolecular Folding Dynamics of i-Motif DNA
J. Choi, S. Kim, T. Tachikawa, M. Fujitsuka, T. Majima*
J. Am. Chem. Soc. 2011, 133(40), 16146–16153
3. Photoinduced Electron Transfer in a Quantum Dot−Cucurbituril Supramolecular
Complex
S.-C. Cui, T. Tachikawa, M. Fujitsuka, T. Majima*
J. Phys. Chem. C 2011, 115(5), 1827–1830
4. Single-molecule, single-particle observation of size-dependent photocatalytic
activity in Au/TiO2 nanocomposites
N. Wang, T. Tachikawa*, T. Majima*
Chem. Sci. 2011, 2(5), 891–900.
2010
Original papers (selected)
1. Evaluating Host−Guest Interactions in a Metal−Organic Framework Using a
Polarity-Sensitive Probe
J. R. Choi, T. Tachikawa, M. Fujitsuka, T. Majima*
J. Phys. Chem. Lett. 2010, 1(7), 1101–1106.
2. Europium-Based Metal−Organic Framework as a Photocatalyst for the One-Electron
Oxidation of Organic Compounds
J. R. Choi, T. Tachikawa, M. Fujitsuka, T. Majima*
Langmuir 2010, 26(13), 10437–10443.
3. Probing Photocatalytic Active Sites on a Single Titanosilicate Zeolite
with a Redox-Responsive Fluorescent Dye
T. Tachikawa*, S. Yamashita, T. Majima*
Angew. Chem. Int. Ed. 2010, 49(2), 432–435.
4. Design of a Highly Sensitive Fluorescent Probe for Interfacial Electron
Transfer on a TiO2 Surface
T. Tachikawa*, N. Wang, S. Yamashita, S.-C. Cui, T. Majima*
Angew. Chem. Int. Ed. 2010, 49(46), 8593–8597.
5. Photophysical properties of Zn-substituted cytochrome c investigated by
single-molecule and ensemble-averaged spectroscopy
J. Choi, T. Tachikawa, Y. Kim, M. Fujitsuka, H. Ihee, T. Majima
Chem. Commun. 2010, 46(48), 9155–9157.
6. Tin-porphyrin sensitized TiO2 for the production of H2 under visible light
W. Kim, T. Tachikawa, T. Majima, S. H. Kim, H.-J. Kim, W. Choi*
Energy Environ. Sci. 2010, 3(11), 1789–1795.
Review
1. Single-molecule, single-particle fluorescence imaging of TiO2-based photocatalytic reactions
T. Tachikawa, T. Majima*
Chem. Soc. Rev. 2010, 39(12), 4802–4819.