2026
Merging dynamic and static chirality in propeller-shaped carbazole oligomers via chiral amine substitution
Tanioka, Yuma; Omasa, Ryosuke; Okujima, Tetsuo; Uno, Hidemitsu; Takase, Masayoshi*
RSC Adv. 2026, 16 (3), 1988-1992. (Royal Sciety of Chemistry)
DOI: 10.1039/d5ra09136e
2025
Pyrrole-Fused Aza-Nanographene with Two Gulf-Edge Regions as Flexible Sites
Matsunaga, Takayuki; Oki, Kosuke; Mori, Shigeki; Nishiuchi, Tomohiko; Higashi, Masahiro; Kubo, Takashi; Okujima, Tetsuo; Uno, Hidemitsu; Takase, Masayoshi*
Org. Lett. 2025, 27 (39), 11005-11010. (American Chemical Society)
Ehime University Published Research Archives
DOI: 10.1021/acs.orglett.5c03278
Oxidation of meso-free corrole: 5-, 10-, and 15-oxoisocorroles
Okujima, Tetsuo*; Takahashi, Keita; Konishi, Shota; Mori, Shigeki; Nakamura, Jun; Fukunaga, Shingo; Uno, Hidemitsu; Takase, Masayoshi
J. Porphyrins Phthalocyanines 2025, 29 (10n11), 1107-1111. (Society of Porphyrins and Phthalocyanines)
DOI: 10.1142/S1088424625500877
>Donor-Acceptor Segregated π-Conjugated Oligomers with Through-Bondand Through-Space Interactions
Takase, Masayoshi*; Sugawara, Yuki; Nishinaga, Tohru
Asian J. Org. Chem. 2025, 14 (8), e202500397. (Wiley-VCH)
In memory of Prof. Masahiko Iyoda
Solvent-Induced Chirality Inversion in Propeller-Shaped PDI Oligomers with Bright Circularly Polarized Luminescence Hot Paper
Tanioka, Yuma; Takase, Masayoshi*; Hamasu, Mashiro; Hata, Shogo; Hashimoto, Kohei; Mori, Shigeki; Ishibashi, Yukihide; Nukumi, Yuki; Higashi, Masahiro; Sato, Hirofumi; Okujima, Tetsuo; Uno, Hidemitsu*
Angew. Chem. Int. Ed. 2025, 64 (32), e202509190 (1-8). (Wiley-VCH)
Ehime University Published Research Archives
Metallic crystals with a three-dimensional narrow band based on an aromatic hydrocarbon derivative
Ikeda, Misako; Sasaki, Yoshiki; Fujikawa, Yoshino; Mori, Shigeki; Konishi, Kensuke; Ohara, Keishi; Dekura, Haruhiko; Toyota, Hiromichi; Takase, Masayoshi; Shirai, Ami Mi; Murotani, Yuta; Matsunaga, Ryusuke; Naito, Toshio*
J. Mater. Chem. C 2025, 13 (25), 12650-12656. (Royal Society of Chemistry)
DOI: 10.1039/d5tc01367d
Synthesis of [34]Octaphyrin(1.0.1.0.1.0.1.0)
Okujima, Tetsuo*; Hiura, Nobuhiro; Mori, Shigeki; Sasaki, Toshiyuki; Uno, Hidemitsu; Takase, Masayoshi
Asian J. Org. Chem. 2025, 14 (6), e202500342 (1-4). (Wiley-VCH)
In memory of Prof. Masahiko Iyoda
2024
Di(acenaphtho)BODIPYs as deep red fluorescence probes for reactive oxygen species
Ohara, Keishi*; Watanabe, Takumi; Ishi Haruki; Nakano, Hideyuki; Okujima, Tetsuo
Dyes Pigm. 2024, 227, 112192(1-8). (Elsevier)
DOI: 10.1016/j.dyepig.2024.112192
Synthesis of 10H-di(1-benzothiopheno)[2,3-b:3',2'-d]pyrrole: Re-investigation of the Cadogan cyclization route
Tanioka, Yuma; Mori, Shigeki; Takase, Masayoshi; Uno, Hidemitsu*
Bull. Chem. Soc. Jpn. 2024, 97, uoae010. (The Chemical Society of Japan)
2023
Orthogonal and twisted dimers of redox-active pyrrole-fused pentaazapolycyclic hydrocarbons
Narita, Tomoyuki; Fujiwara, Kazuki; Uno, Hidemitsu; Asano, S. Motoko; Nishinaga, Tohru; Takase, Masayoshi*
J. Porphyrins Phthalocyanines 2023, 27 (07n10), 1357-1363. (Society of Porphyrins and Phthalocyanines)
DOI: 10.1142/S1088424623500931
Synthesis of cyclo[8]pyrrole-phosphonate complexes by anion exchange
Matsumoto, Hiroki; Matsumoto, Naoki; Mori, Shigeki; Hisaki, Ichiro; Nakae, Takahiro; Takase, Masayoshi; Uno, Hidemitsu; Okujima, Tetsuo*
J. Porphyrins Phthalocyanines 2023, 27 (07n10), 1126-1130. (Society of Porphyrins and Phthalocyanines)
DOI: 10.1142/S1088424623500438
Substituent Effects on Paratropicity and Diatropicity in π-Extended Hexapyrrlohexaazacoronene
Takase, Masayoshi*; Takata Toranosuke; Oki, Kosuke; Mori, Shigeki; Uno, Hidemitsu*
Chem. Sci. 2023, 14, 7036-7043. (Royal Society of Chemistry)
Ehime University Published Research Archives
DOI: 10.1039/D2SC07037E
Pyrrole-Fused Azacoronene Analog with Sulfur Embedded in the Outer Periphery
Takase, Masayoshi*; Sagawa, Aiki; Mori, Shigeki; Okujima, Tetsuo; Uno, Hidemitsu*
J. Org. Chem. 2023, 88, 9413-9418. (American Chemical Society)
Synthesis of bicyclo[2.2.2]octadiene-fused 5,15-diazaporphyrin and 10-azacorrole with meso-imine bridges
Okujima, Tetsuo*; Ueda, Yuki; Inoue, Manami; Mori, Shigeki; Ohara, Keishi; Takase, Masayoshi; Uno, Hidemitsu; Naito, Toshio
J. Porphyrins Phthalocyanines 2023, 27, 402-407. (Society of Porphyrins and Phthalocyanines)
DOI: 10.1142/S1088424623500074
Serendipitous formation of meso-free corroles in the [3+1] porphyrin and [3+2] sapphyrin syntheses
Uno, Hidemitsu*; Konishi, Shota; Nakamura, Jun; Mori, Shigeki; Takase, Masayoshi; Okujima, Tetsuo*
J. Porphyrins Phthalocyanines 2023, 27, 274-284. (Society of Porphyrins and Phthalocyanines)
DOI: 10.1142/S1088424622500900
Synthesis of a π-extended azacoronene composed of naphthalene and acenaphtho[1,2-c]pyrrole toward a chiral curved &pi structure
Takase, Masayoshi*; Matsunaga,Takayuki; Oki, Kosuke; Mori, Shigeki; Uno, Hidemitsu*
J. Porphyrins Phthalocyanines 2023, 27, 253-259. (Society of Porphyrins and Phthalocyanines)
DOI: 10.1142/S1088424622500869
Synthesis of Peripherally Annulated Phenanthroporphyrins
Muramatsu, Kota; Okujima, Tetsuo*; Mori, Shigeki; Kikuchi, Shion; Ando, Shimpei; Okada, Yusuke; Takase, Masayoshi; Uno, Hidemitsu; Kobayashi, Nagao*
Org. Lett. 2023, 25, 3049-3054. (American Chemical Society)
Ehime University Published Research Archives
DOI: 10.1021/acs.orglett.3c00876
2022
Tropo(thio)ne-embedded homoHPHACs: does the tropylium cation induce global antiaromaticity in expanded hexapyrrolohexaazacoronene?
Takase, Masayoshi*; Ueno, Atsushi; Oki, Kosuke; Matsumoto, Hiroki; Mori, Shigeki; Okujima, Tetsuo; Uno, Hidemitsu
Chem. Commun. 2022, 58, 3366-3369. (The Royal Society of Chemistry)
Ehime University Published Research Archives
DOI: 10.1039/d1cc07152a
Synthesis of Non- or Antiaromatic Dicarbaamethyrin: [24]Diazulihexaphyrin(0.1.0.0.1.0)
Okujima, Tetsuo*; Inaba, Hayato; Mori, Shigeki; Takase, Masayoshi; Uno, Hidemitsu; Chino, Yoshiaki; Okada, Yusuke; Kobayashi, Nagao*
Org. Lett. 2022, 24, 234-239. (American Chemical Society)
Ehime University Published Research Archives
DOI: 10.1021/acs.orglett.1c03882
Synthesis, Properties, and Packing Structures of Wing-Shaped N-Doped Nanographene in Various Oxidation States
Wu, Fan; Oki, Kosuke; Xue, Jiaying; Mori, Shigeki; Takase, Masayoshi*; Shen, Zhen*; Uno, Hidemitsu*
Org. Lett. 2022, 24, 80-84. (American Chemical Society)
DOI: 10.1021/acs.orglett.1c03669
2021
Black HPHAC: Synthesis and properties of dinitroHPHAC and its reduced global aromaticity in the dication state
Sasaki, Yoshiki; Fujikawa, Yoshino; Takase, Masayoshi*; Uno, Hidemitsu*
J. Porphyrins Phthalocyanines 2021, 25, 1072-1077. (Society of Porphyrins and Phthalocyanines)
DOI: 10.1142/S108842462150098X
Synthesis of antiaromatic tetrabenzodithiaamethyrin
Okujima, Tetsuo*; Kozumi, Ryohei; Mori, Shigeki; Chino, Yoshiaki; Takase, Masayoshi; Uno, Hidemitsu; Kobayashi, Nagao*
J. Porphyrins Phthalocyanines 2021, 25, 1055-1063. (Society of Porphyrins and Phthalocyanines)
DOI: 10.1142/S1088424621500966
Cyclo[9]pyrrole: Selective Synthesis of [34]Nonaphyrin(0.0.0.0.0.0.0.0.0)
Matsumoto, Hiroki; Okujima, Tetsuo*; Mori, Shigeki; Bacilla, Ana C. C.; Takase, Masayoshi; Uno, Hidemitsu; Kobayashi, Nagao*
Org. Lett. 2021, 23, 3442-3446. (American Chemical Society)
Ehime University Published Research Archives
DOI: 10.1021/acs.orglett.1c00899
Synthesis of C4h Symmetrical Octa(3,5-dimethoxyphenyl)tetrabenzoporphyrins Editor's Choice
Muramatsu, Kota; Okujima, Tetsuo*; Mori, Shigeki; Takase, Masayoshi; Uno, Hidemitsu* Open Access
Chem. Lett. 2021, 50, 841-843. (The Chemical Society of Japan)
DOI: 10.1246/cl.210045
Synthesis and Characterization of Peralkylated Pyrrole-Fused Azacoronene
Oki, Kosuke; Takase, Masayoshi*; Kobayashi, Nagao;*; Uno, Hidemitsu*
J. Org. Chem. 2021, 86, 5102-5109 (American Chemcal Society)
Radially π-Extended Pyrrole-Fused Azacoronene: A Series of Crystal Structures of HPHAC with Various Oxidation States
Sasaki, Yoshiki; Takase, Masayoshi*; Kobayashi, Nagao;* Mori, Shigeki; Ohara, Keishi; Okujima, Tetsuo; Uno, Hidemitsu*
J. Org. Chem. 2021, 86, 4290-4295. (American Chemical Society)
Ehime University Published Research Archives
2020
Development of Heterocycles-Substituted and Fused Azulenes in the Last Decade (2010-2020)
Shoji, Taku*; Okujima, Tetsuo*; Ito, Shunji*
Int. J. Mol. Sci. 2020, 21, 7087/1-33. (MDPI)
DOI: 10.3390/ijms21197087
Synthesis and Properties of NitroHPHAC: The First Example of Substitution Reaction on HPHAC
Sasaki, Yoshiki; Takase, Masayoshi*; Mori, Shigeki; Uno, Hidemitsu*
Molecules 2020, 25, 2486/1-8. (MDPI)
DOI: 10.3390/molecules25112486
Synthesis of Azulitriphyrin(2.1.1)
Okujima, Tetsuo*; Inaba, Hayato; Mori, Shigeki; Takase, Masayoshi; Uno, Hidemitsu
J. Porphyrins Phthalocyanines 2020, 24, 394-400. (Society of Porphyrins and Phthalocyanines)
DOI: 10.1142/S108842461950130X
2019
Synthesis and Isolation of Antiaromatic Expanded Azacoronene via Intramolecular Vilsmeier-Type Reaction
Oki, Kosuke; Takase Masayoshi*; Mori, Shigeki; Uno, Hidemitsu*
J. Am. Chem. Soc. 2019, 141, 16255-16259. (American Chemical Society)
Ehime University Published Research Archives
DOI: 10.1021/jacs.9b09260
Synthesis of the Soluble Precursors of Tetrabenzoporphyrin: Control of the Solubility and the Conversion Temperature
Okujima, Tetsuo*; Hashimoto, Yusuke; Furuta, Tomoya; Yamanaka, Ritsuko; Jin, Guangnan; Otsubo, Saika; Aramaki, Shinji; Mori, Shigeki; Yamada, Hiroko; Uno, Hidemitsu; Ono, Noboru
Bull. Chem. Soc. Jpn. 2019, 92, 1370-1378. (The Chemical Society of Japan)
Synthesis, Structural and Optical Properties of Tetrabenzoporphyrin Complexes Bearing Four or Eight Peripheral Phenyl Groups
Furuyama, Taniyuki*; Okujima, Tetsuo*; Muramatsu, Kota; Takahashi, Yuichi; Mikami, Akihiro; Fukumura, Tomoteru; Mori, Shigeki; Nakae, Takahiro; Takase, Masayoshi; Uno, Hidemitsu; Kobayashi, Nagao*
Eur. J. Org. Chem. 2019, 3224-3235. (Wiley-VCH)
Synthesis and Redox Properties of Pyrrole- and Azulene-Fused Azacoronene
Sasaki, Yoshiki; Takase, Masayoshi*; Okujima, Tetsuo; Mori, Shigeki; Uno, Hidemitsu*
Org. Lett. 2019, 21, 1900-1903. (American Chemical Society)
Ehime University Published Research Archives
DOI: 10.1021/acs.orglett.9b00515
Synthesis of Di(3-thienyl)benzoporphyrin
Okujima, Tetsuo*; Muramatsu, Kota; Mori, Shigeki; Takase, Masayoshi; Uno, Hidemitsu
Heterocycles 2019, 99, 1434-1443. (The Japan Institute of Heterocyclic Chemistry)
2018
Synthesis, Structures, and Properties of Core-Expanded Azacoronene Analogue: A Twisted π-System with Two N-Doped Heptagons
Oki, Kosuke; Takase, Masayoshi*; Mori, Shigeki; Shiotari, Akitoshi; Sugimoto, Yoshiaki; Ohara, Keishi; Okujima, Tetsuo; Uno, Hidemitsu*
J. Am. Chem. Soc. 2018, 140, 10430-10434. (American Chemical Society)
DOI: 10.1021/jacs.8b06079
Synthesis of Bicyclo[2.2.2]octadiene-Fused Sapphyrins and Their Thermal Conversion
Okujima, Tetsuo*; Abe, Toshiki; Mori, Shigeki; Nakae, Takahiro; Uno, Hidemitsu
Heterocycles 2018, 96, 1239-1247. (The Japan Institute of Heterocyclic Chemistry)
DOI: 10.3987/COM-18-13910
2017
One-pot Synthesis of a Rice Ball-shaped Cyclophane with syn-Diethanoanthracene-fused Dipyrrole and Hexafluorobenzene
Oki, Kosuke; Tagawa, Kazunari; Mori, Shigeki; Takase, Masayoshi; Okujima, Tetsuo; Uno, Hidemitsu*
Chem. Lett. 2017, 46, 243-244. (The Chemical Society of Japan)
DOI: 10.1246/cl.161026
2016
Synthesis, Characterization and Electronic Structures of Porphyrins Fused with Polycyclic Aromatic Ring Systems
Okujima, Tetsuo*; Mack, John*; Nakamura, Jun; Kubheka, Gugu; Nyokong, Tebello; Zhu, Hua; Komobuchi, Naoki; Ono, Noboru; Yamada, Hiroko; Uno, Hidemitsu; Kobayashi, Nagao*
Chem. Eur. J. 2016, 22, 14730-14738. (Wiley-VCH)
Template Synthesis of Decaphyrin without Meso-Bridges: Cyclo[10]pyrrole
Okujima, Tetsuo*; Ando, Chie; Agrawal, Saurabh; Matsumoto, Hiroki; Mori, Shigeki; Ohara, Keishi; Hisaki, Ichiro; Nakae, Takahiro; Takase, Masayoshi; Uno, Hidemitsu; Kobayashi, Nagao*
J. Am. Chem. Soc. 2016, 138, 7540-7543. (American Chemical Society)
DOI: 10.1021/jacs.6b04941
Synthesis of cyclo[8]pyrrole-polyoxometalate double-decker complex
Okujima, Tetsuo*; Matsumoto, Hiroki; Mori, Shigeki; Nakae, Takahiro; Takase, Masayoshi; Uno, Hidemitsu
Tetrahedron Lett. 2016, 57, 3160-3162. (ELSEVIER)
DOI: 10.1016/j.tetlet.2016.06.021