Faculty Profiles - SHINOKUBO, Hiroshi

Papers - SHINOKUBO, Hiroshi

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Synthesis of Directly Connected BODIPY Oligomers through Suzuki-Miyaura Coupling Reviewed

Yosuke Hayashi, Shigeru Yamaguchi, Won Young Cha, Dongho Kim, and Hiroshi Shinokubo

Org. Lett. Vol. 13 ( 12 ) page： 2992-2995 2011.5

Iridium-Catalyzed Direct Tetraborylation of Perylene Bisimides Reviewed

Takuro Teraoka, Satoru Hiroto, and Hiroshi Shinokubo

Org. Lett. Vol. 13 ( 10 ) page： 2532-2535 2011.4

Metal-Mediated Synthesis of Antiaromatic Porphyrinoids from a BODIPY Precursor Reviewed

Takafumi Sakida, Shigeru Yamaguchi, and Hiroshi Shinokubo

Angew. Chem., Int. Ed. Vol. 50 ( 10 ) page： 2280-2283 2011.2

A beta-to-beta 2,5-Thienylene-Bridged Cyclic Porphyrin Tetramer: Its Rational Synthesis and 1:2 Binding Mode with C60 Reviewed

Jianxin Song, Naoki Aratani, Hiroshi Shinokubo, and Atsuhiro Osuka

Chem. Sci. Vol. 2 ( 4 ) page： 748-751 2011.1

Peripherally Cyclometalated Iridium Complexes of Dipyridylporphyrin Reviewed

Keita Yoshida, Takumi Nakashima, Shigeru Yamaguchi, Atsuhiro Osuka and Hiroshi Shinokubo

Dalton Trans. page： in press 2011

Synthesis of a Diimidazolylporphyrin Pincer Palladium Complex Reviewed

Jun Yamamoto, Tomohiro Shimizu, Shigeru Yamaguchi, Naoki Aratani, Hiroshi Shinokubo and Atsuhiro Osuka

J. Porphyrins Phthalocyanines page： in press 2011

Pyrrole-Bridged Porphyrin Nanorings Reviewed

Jianxin Song, Naoki Aratani, and Hiroshi Shinokubo, Atsuhiro Osuka

Chem. Eur. J. Vol. 16 ( 45 ) page： 13320-13324 2010.11

A Porphyrin Nanobarrel that Encapsulates C60 Reviewed

Jianxin Song, Naoki Aratani, Hiroshi Shinokubo, and Atsuhiro Osuka

J. Am. Chem. Soc. Vol. 132 ( 46 ) page： 16356-16357 2010.10

Platinum(II) and Platinum(IV) Porphyrin Pincer Complexes: Synthesis, Structures, and Reactivity Reviewed International journal

Keita Yoshida, Shigeru Yamaguchi, Atsuhiro Osuka, Hiroshi Shinokubo

ORGANOMETALLICS Vol. 29 ( 17 ) page： 3997 - 4000 2010.9

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：AMER CHEMICAL SOC

Pt(II)and Pt(IV)porphyrin pincer complexes were synthesized and characterized. Their structures and electronic properties were influenced by the valence state of platinum at the outer coordination site. The considerable distortion in the porphyrin core of the Pt(II) complex was relieved in the Pt(IV) complex, due to the change of the coordination geometry of platinum. Oxidation of the phenylplatinum(II) pincer complex with iodine induced a facile carbon carbon bond formation reaction at the meso position via reductive elimination.

DOI： 10.1021/om100644n

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Directly Pd(II)-Bridged Porphyrin Belts with Remarkable Curvatures Reviewed

Jianxin Song, Naoki Aratani, Ji Haeng Heo, Dongho Kim, Hiroshi Shinokubo, and Atsuhiro Osuka

J. Am. Chem. Soc. Vol. 132 ( 34 ) page： 11868-11869 2010.9

eta(2)-Porphyrin Ru(II) pi Complexes Reviewed International journal

Shigeru Yamaguchi, Hiroshi Shinokubo, Atsuhiro Osuka

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY Vol. 132 ( 29 ) page： 9992 - 9993 2010.7

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：AMER CHEMICAL SOC

Highly stable eta(2)-porphyrin Ru(II) pi complexes have been synthesized. The formation of the eta(2) pi it bond has been facilitated through pi-pi stacking interactions between the porphyrin and the planar ligand on Ru. pi coordination of ruthenium to porphyrin results in dramatic changes in the aromaticity and electronic properties. These properties are controllable via fine-tuning of the ligand on ruthenium.

DOI： 10.1021/ja104842h

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A Stable Non-Kekule Singlet Biradicaloid from meso-Free 5,10,20,25-Tetrakis(Pentafluorophenyl)-Substituted [26]Hexaphyrin(1.1.1.1.1.1) Reviewed International journal

Taro Koide, Ko Furukawa, Hiroshi Shinokubo, Jae-Yoon Shin, Kil Suk Kim, Dongho Kim, Atsuhiro Osuka

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY Vol. 132 ( 21 ) page： 7246 - + 2010.6

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：AMER CHEMICAL SOC

A meso,meso-diketohexaphyrin was isolated and characterized as a chemically stable non-Kekule singlet biradicaloid. Two unpaired electrons are seemingly delocalized on two tripyrrolic units separated by C=O bonds. These results underscore the potential of expanded porphyrins to achieve unique electronic states.

DOI： 10.1021/ja101040s

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Synthesis of meso,meso'-Pyrrole-Bridged Diporphyrins by Cu(I)-Mediated Annulation Reviewed

Chihiro Maeda, Hiroshi Shinokubo, and Atsuhiro Osuka

Org. Lett. Vol. 12 ( 8 ) page： 1820-1823 2010.4

Porphyrin "Lego Block" Strategy To Construct Directly meso-beta Doubly Linked Porphyrin Rings Reviewed

Jianxin Song, Naoki Aratani, Pyosang Kim, Dongho Kim, Hiroshi Shinokubo, and Atsuhiro Osuka

Angew. Chem., Int. Ed. Vol. 49 ( 21 ) page： 3617-3620 2010.4

Large Porphyrin Squares from the Self-Assembly of meso-Triazole-Appended L-Shaped meso-meso-Linked ZnII-Triporphyrins: Synthesis and Efficient Energy Transfer Reviewed

Chihiro Maeda, Pyosang Kim, Sung Cho, Jong Kang Park, Jong Min Lim, Dongho Kim, Josh Vura-Weis, Michael R. Wasielewski, and Hiroshi Shinokubo, Atsuhiro Osuka

Chem. Eur. J. Vol. 16 ( 17 ) page： 5052-5061 2010.3

Excess Polarizability Reveals Exciton Localization/Delocalization Controlled by Linking Positions on Porphyrin Rings in Butadiyne-Bridged Porphyrin Dimers Reviewed

Chunxing She, Shanmugam Easwaramoorthi, Pyosang Kim, Satoru Hiroto, Ichiro Hisaki, Hiroshi Shinokubo, Atsuhiro Osuka, Dongho Kim and Joseph T. Hupp

J. Phys. Chem. A Vol. 114 ( 10 ) page： 3384-3390 2010.3

Strategic Synthesis of 2,6-Pyridylene-Bridged β-to-β Porphyrin Nanorings through Cross-Coupling Reviewed

Jianxin Song, Pyosang Kim, Naoki Aratani, Dongho Kim, Hiroshi Shinokubo, and Atsuhiro Osuka

Chem. Eur. J. Vol. 16 ( 10 ) page： 3009-3012 2010.2

Bithiophene-Porphyrin Hybrid Nanorings Reviewed

Kenta Osawa, Jianxin Song, Ko Furukawa, Hiroshi Shinokubo, Naoki Aratani, and Atsuhiro Osuka

Chem. Asian J. Vol. 5 ( 4 ) page： 764-767 2010.1

A Stable Organic Radical Delocalized on a Highly Twisted pi System Formed Upon Palladium Metalation of a Mobius Aromatic Hexaphyrin Reviewed International journal

Harapriya Rath, Sumito Tokuji, Naoki Aratani, Ko Furukawa, Jong Min Lim, Dongho Kim, Hiroshi Shinokubo, Atsuhiro Osuka

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION Vol. 49 ( 8 ) page： 1489 - 1491 2010

Doubly beta-Functionalized Meso-Meso Directly Linked Porphyrin Dimer Sensitizers for Photovoltaics Reviewed International journal

Jong Kang Park, Jinping Chen, Hye Ryun Lee, Sun Woo Park, Hiroshi Shinokubo, Atsuhiro Osuka, Dongho Kim

JOURNAL OF PHYSICAL CHEMISTRY C Vol. 113 ( 52 ) page： 21956 - 21963 2009.12

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：AMER CHEMICAL SOC

Novel meso-meso directly linked porphyrin dinners tethered at beta-pyrrolic positions of the porphyrin ring with 2-propenoic acids or 2,4-pentadienoic acids were prepared for sensitization of nanocrystalline titanium dioxide solar cells. Most importantly, the absorption spectra of dimeric porphyrins were notably extended into the midvisible region in the solar spectrum while the LUMO levels are sufficiently high to inject electrons to the conduction band of TiO2. Among these dimers, PEG-2b-bd-Zn2 dimer, bearing a poly(ethylene glycol) end group at one meso position, showed the highest incident photon-to-photocurrent generation with 47% efficiency at the Soret region as well as the power conversion efficiency of 4.2% under standard AM 1.5 solar condition. To elucidate electronic structures and excited-state properties, UV-vis absorption and emission, cyclic voltammetry measurements, and density functional theory Calculations were performed. To Our best knowledge, the obtained conversion efficiency of 4.2% from PEG-2b-bd-Zn2-sensitized DSSC is the highest photovoltaic performance among DSSCs based on oligomeric porphyrins. Thus, this work suggests that the wide spectral response of directly linked porphyrin dimers due to the excitonic coupling is an intriguing aspect of directly linked pophyrin dimers to be utilized for DSSCs and gives an insight into the design of more efficient light-harvesting molecules.

DOI： 10.1021/jp905675x

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Papers - SHINOKUBO, Hiroshi