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Hiroshi Okada

Education

1999.3 Bachelor, Department of Chemistry, School of Science, Tohoku University
2001.3 Master, Department of Chemistry, School of Science, Tohoku University
2004.3 Ph.D, Department of Chemistry, School of Science, Tohoku University

 

Awards

2013.3 The Osawa Award of the Fullerenes, Nanotubes and Graphene Research Society

Publications

(1) Convenient Preparation of Li[(η5-C5Me5)M(CO)5] (M = Ru, Fe) by the Reaction of (η5-C5Me5)M(CO)2H with n-BuLi

Masaaki Okazaki, Kazuyuki Satoh, Tadahiro Akagi, Masatoshi Iwata, Kyeong A. Jung, Rie Shiozawa, Hiroshi Okada, Keiji Ueno, Hiromi Tobita, Hiroshi Ogino

J. Organomet. Chem. 2002, 645, 201–205.

 

(2) Photochemistry of a Tellurosilyl(carbonyl)iron(II) Complex. Generation of a Novel Te-Si-Fe Three-Membered Cyclic Intermediate

Hiroshi Okada, Masaaki Okazaki, Hiromi Tobita, Hiroshi Ogino

Chem. Lett. 2003, 32, 876–877.

 

(3) Phosphasilaferracyclopropane: An Activator of Small Molecules Having Polarized Single, Double, and Aromatic Unsaturated Bonds

Masaaki Okazaki, Kyeong A.Jung, Kazuyuki Satoh, Hiroshi Okada, Junpei Naito, Tadahiro Akagi, Hiromi Tobita, Hiroshi Ogino

J. Am. Chem. Soc. 2004, 126, 5060–5061.

 

(4) Synthesis, Structure, and Properties of Three- and Six-Membered Metallacycles Composed of Iron, Germanium, and Sulfur Atoms

Masaaki Okazaki, Hiromitsu Kimura, Takashi Komuro, Hiroshi Okada, Hiromi Tobita

Chem. Lett. 2007, 36, 990–991.

 

(5) A Layered Ionic Crystal of Polar Li@C60 Superatoms

Shinobu Aoyagi, Eiji Nishibori, Hiroshi Sawa, Kunihisa Sugimoto, Masaki Takata, Yasumitsu Miyata, Ryo Kitaura, Hisanori Shinohara, Hiroshi Okada, Takeshi Sakai, Yoshihiro Ono, Kazuhiko Kawachi, Kuniyoshi Yokoo, Shoichi Ono, Kenji Omote, Yasuhiko Kasama, Shinsuke Ishikawa, Takashi Komuro, Hiromi Tobita

Nat. Chem. 2010, 2, 678–683.

 

(6) Covalently Chemical Modification of Lithium Ion-Encapsulated Fullerene: Synthesis and Characterization of [Li+@PCBM]PF6--

Yutaka Matsuo, Hiroshi Okada, Masashi Maruyama, Hiroyasu Sato, Hiromi Tobita, Yoshihiro Ono, Kenji Omote, Kazuhiko Kawachi, Yasuhiko Kasama

Org. Lett. 2012, 14, 3784–3787. [DOI: 10.1021/ol301671n]

 

(7) Preparation of Li-encapsulated [60]Fullerene (Li@C60) and Its Derivatization to Hexafluorophosphate Salt [Li+@C60]PF6

Hiroshi Okada, Takashi Komuro, Takeshi Sakai, Yutaka Matsuo, Yoshihiro Ono, Kenji Omote, Kuniyoshi Yokoo, Kazuhiko Kawachi, Yasuhiko Kasama, Shoichi Ono, Rikizo Hatakeyama, Toshiro Kaneko, Hiromi Tobita

RSC Advances 2012, 2, 10624–10631. [DOI: 10.1039/C2RA21244G]

 

(8) First-principles Investigation on Structural and Optical Properties of M+@C60 (where M = H, Li, Na, and K)

Yoshifumi Noguchi, Osamu Sugino, Hiroshi Okada, Yutaka Matsuo
J. Phys. Chem. C 2013, 117, 15362–15367. [DOI: 10.1021/jp4041259]

 

(9) Efficient Diels–Alder Addition of Cyclopentadiene to Lithium Ion Encapsulated [60]Fullerene

Hiroki Kawakami, Hiroshi Okada, Yutaka Matsuo

Org. Lett. 2013, 15, 4466–4469. [DOI: 10.1021/ol4020046]

 

(10) Anion Exchange of Li+@C60 Salt for Improved Solubility
Hiroshi Okada, Yutaka Matsuo
Fullerenes, Nanotubes and Carbon Nanostructures 2014, 22, 262–268. (Prof. Akasaka special issue). [DOI:10.1080/1536383X.2013.812639]

 

(11) Iridium and Platinum Complexes of Li+@C60

Takahito Watanabe, Masato F. Itoh, Takashi Komuro, Hiroshi Okada, Takeshi Sakai, Yoshihiro Ono, Kazuhiko Kawachi, Yasuhiko Kasama, Hiromi Tobita

Organometallics 2014, 33, 608–611.

 

(12) Kinetic Study of the Diels–Alder Reaction of Li+@C60 with Cyclohexadiene: Greatly Increased Reaction Rate by Encapsulated Li+

Hiroshi Ueno, Hiroki Kawakami, Koji Nakagawa, Hiroshi Okada, Naohiko Ikuma, Shinobu Aoyagi, Ken Kokubo, Yutaka Matsuo, Takumi Oshima

J. Am. Chem. Soc. 2014, 136, 11162–11167. [DOI: 10.1021/ja505952y]

 

(13) Supramolecular Formation of Lithium-Ion-Encapsulated PCBM Fullerene with Sulfonated meso-Tetraphenylporphyrins and Long-Lived Charge Separation

Yuki Kawashima, Kei Ohkubo, Hiroshi Okada, Yutaka Matsuo, Shunichi Fukuzumi

ChemPhysChem, 2014, 15, 3782–3790.

 

(14) Diporphyrin Magnesium Complex with Long-Wavelength Light Absorption for Organic Solar Cells

Takenari Sato, Takafumi Nakagawa, Hiroshi Okada, Yutaka Matsuo

J. Porphyrins Phthalocyanines 2015, 19, 451. (Prof. Shunichi Fukuzumi special issue) [DOI: 10.1142/S1088424615500303]

 

(15) Electrochemical Reduction of Cationic Li+@C60 to Neutral Li+@C60•–: Isolation and Characterisation of Endohedral [60]Fulleride

Hiroshi Ueno, Shinobu Aoyagi, Yu Yamazaki, Kei Ohkubo, Naohiko Ikuma, Hiroshi Okada, Tatsuhisa Kato, Yutaka Matsuo, Shunichi Fukuzumi, and Ken Kokubo

Chem. Sci. 2016, 7, 5770-5774. [DOI: 10.1039/C6SC01209D]

 

(16) Structures and Properties of Saturn-Like Complexes Composed of Oligothiophene Macrocycle with Methano[60]fullerene and [70]Fullerene
Masahiko Iyoda, Hideyuki Shimizu, Shinobu Aoyagi, Hiroshi Okada, Biao Zhou, and Yutaka Matsuo
Can. J. Chem. 2017, 95, 315–319. [DOI: 10.1139/cjc-2016-0461

 

(17) Fullerene Cations-mediated Demethylation/Cyclization to 5- and 7-Membered Cyclo[60]fullerene Derivatives

Yutaka Matsuo, Keisuke Ogumi, Ying Zhang, Hiroshi Okada, Takafumi Nakagawa, Hiroshi Ueno, Akiko Gocho, and Eiichi Nakamura
J. Mater. Chem. A 2017, 5, 2774–2783 . [DOI: 10.1039/C6TA10319G]

 

(18) Crystallographic Structure Determination of Both [5,6]- and [6,6]-Isomers of Lithium-ion-containing Dipheylmethano[60]fullerene

Hiroshi Okada, Hiroki Kawakami, Shinobu Aoyagi, and Yutaka Matsuo

J. Org. Chem. 2017, 82, 5868–5872. [DOI: 10.1021/acs.joc.7b00730]

 

(19) Substituents Effect in Magnesium Tetraethynylporphyrin with Two Diketopyrrolopyrrole Units for Bulk Heterojunction Organic Solar Cells

Keisuke Ogumi, Takafumi Nakagawa, Hiroshi Okada, Ryohei Sakai, Huan Wang, and Yutaka Matsuo

J. Mater. Chem. A 2017, 5, 23067–23077. [DOI: 10.1039/C7TA07576F]

 

(20) Synthesis and Crystal Structure of Li+@Fluoreno[60]fullerene: Effect of Encapsulated Lithium Ion on Electrochemistry of Spiroannelated Fullerene

Hiroshi Ueno, Hiroshi Okada, Shinobu Aoyagi, Yutaka Matsuo

J. Org. Chem. 2017, 82, 11631–11635. [DOI: 10.1021/acs.joc.7b01893]

 

(21) A Fluorenylidene-Acridane That Becomes Dark in Color upon Grinding – Ground State Mechanochromism by Conformational Change

Tsuyoshi Suzuki, Hiroshi Okada, Takafumi Nakagawa, Kazuki Komatsu, Chikako Fujimoto, Hiroyuki Kagi, Yutaka Matsuo

Chem. Sci. 2018, 9, 475–482. [DOI: 10.1039/c7sc03567e]

 

(22) Lithium-Ion Endohedral Fullerene (Li+@C60) Dopant in Stable Perovskite Solar Cells Inducing Anti-Oxidation

Il Jeon, Hiroshi Ueno, Seungju Seo, Kerttu Aitola, Ryosuke Nishikubo, Akinori Saeki, Hiroshi Okada, Gerrit Boschloo, Shigeo Maruyama, and Yutaka Matsuo

Angew. Chem. Int. Ed. 2018, 57, 4607–4611. [DOI: 10.1002/anie.201800816

 

(23) Anthracene-based Organic Small-molecule Electron-injecting Material for Inverted Organic Light-emitting Diodes

Yutaka Matsuo, Hiroshi Okada, Yasuhiro Kondo, Il Jeon, Huan Wang, Yun Yu, Takeshi Matsushita, Motoki Yanai, Toshiaki Ikuta

ACS Appl. Mater. Interfaces 2018, 10, 11810–11817. [DOI: 10.1021/acsami.8b00603]

 

(24) Structure of [60]Fullerene with Mobile Lithium Cation Inside

Shinobu Aoyagi, Kazuhira Miwa, Hiroshi Ueno, Hiroshi Okada, Yutaka Matsuo, Ken Kokubo

Royal Soc. Open Sci. 2018, 5, 180337. [DOI: 10.1098/rsos.180337]

 

(25) Polymeric Acid-doped Transparent Carbon Nanotube Electrodes in Organic Solar Cells with the Longest Doping Durability

Il Jeon, Clement Delacou, Hiroshi Okada, Graham E. Morse, Tae-Hee Han, Yuta Sato, Anton Anisimov, Kazu Suenaga, Esko I. Kauppinen, Shigeo Maruyama, Yutaka Matsuo

J. Mater. Chem. A 2018, 6, 14553–14559. [DOI: 10.1039/C8TA03383H]

(Selected as 2018 Journal of Materials Chemistry A HOT Papers)

 

(26) Magnesium Tetra(phenylethynyl)porphyrin: Stepwise Synthetic Route, Crystal Structures, and Longer Singlet Excited State Lifetime than Zinc Congener

Takafumi Nakagawa, Huan Wang, Anna Zieleniewska, Hiroshi Okada, Shinobu Aoyagi, Dirk M. Guldi, Yutaka Matsuo

Chem. Asian J. 2018, 13, 3032–3039. [DOI: 10.1002/asia.201800994]

Books

(1) Endohedral Lithium-containing Fullerenes: Preparation, Derivatization, and Application

Yutaka Matsuo, Hiroshi Okada, Hiroshi Ueno

Springer, Singapore, 2017. [DOI 10.1007/978-981-10-5004-6] [ISBN: 978-981-10-5003-9]

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