TAKAGI Shinsuke

J-GLOBAL         Last updated: Jul 11, 2019 at 16:09
 
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Name
TAKAGI Shinsuke
URL
http://www.apchem.metro-u.ac.jp/labs/inoue/
Affiliation
Tokyo Metropolitan University
Section
Faculty of Urban Environmental Sciences, Division of Applied Chemistry, Department of Applied Chemistry
Job title
Associate Professor
Degree
Doctor
ORCID ID
0000-0001-7013-4942

Research Areas

 

Academic & Professional Experience

 
1995
   
 
- Tokyo Metropolitan University, Research Associates
 

Education

 
 
 - 
1993
Department of Chemistry, Graduate School, Division of Engineering, Tokyo Metropolitan University
 
 
 - 
1995
Department of Applied Chemistry, Graduate School, Division of Engineering, Tokyo Metropolitan University
 
 
 - 
1991
Department of Industrial Chemistry, Faculty of Engineering, Tokyo Metropolitan University
 

Awards & Honors

 
2002
The award for an excellent lecturer, 81th Annual Meeting of The Chemical Society of Japan
 
2003
The award for an excellent lecturer, 47th Annual Meeting of The Clay Science Society of Japan
 

Published Papers

 
Takahiro Yamamoto, Tomoaki Takigawa, Takuya Fujimura, Tetsuya Shimada, Tamao Ishida, Haruo Inoue, Shinsuke Takagi
Physical Chemistry Chemical Physics      2019   [Refereed]
Yutaka Ohsaki, Arun Thomas, Fazalurahman Kuttassery, Siby Mathew, Sebastian Nybin Remello, Yu Nabetani, Tetsuya Shimada, Shinsuke Takagi, Hiroshi Tachibana, Haruo Inoue
Inorganica Chimica Acta   482 914-924   Oct 2018   [Refereed]
© 2018 Elsevier B.V. Water soluble tin(IV)-porphyrins, trans-dihydroxy-5,10,15,20-tetra(N-methyl-4′-pyridiniumyl)porphyrinate tin (IV) (Sn(IV)TMPyP(OH)2) was successfully synthesized in high yield (90%) through one-pot process in water at room tem...
Takuya Fujimura, Tetsuya Shimada, Tetsuya Shimada, Ryo Sasai, Shinsuke Takagi, Shinsuke Takagi
Langmuir   34(12) 3572-3577   Mar 2018   [Refereed]
© 2018 American Chemical Society. A transparent hybrid film composed of cationic magnesium porphyrin and clay mineral was developed, and its chromic behavior depending on relative humidity (RH) was investigated. The hybrid film was obtained via in...
Ayumi Nakayama, Junya Mizuno, Yuta Ohtani, Tetsuya Shimada, Shinsuke Takagi
Journal of Physical Chemistry C   122(8) 4365-4371   Mar 2018   [Refereed]
© 2018 American Chemical Society. The adsorption distribution of porphyrin dye on the inorganic surface was examined by the use of Förster resonance energy transfer (FRET). Because the efficiency of FRET depends on the distance between energy dono...
Keito Sano, Amane Sonotani, Daichi Tatsumi, Yuta Ohtani, Tetsuya Shimada, Tetsuya Shimada, Shinsuke Takagi, Shinsuke Takagi
Journal of Photochemistry and Photobiology A: Chemistry   353 597-601   Feb 2018
© 2017 Elsevier B.V. Cation exchange capacity (CEC) of titania nanosheet (TNS) and the complex formation behavior with the cationic porphyrin were investigated. It is turned out that the CEC value of TNS is 1.5 × 10−3eq g−1according to a thermogra...
Shunpei Suzuki, Daichi Tatsumi, Takamasa Tsukamoto, Ryou Honna, Tetsuya Shimada, Tetsuya Shimada, Haruo Inoue, Shinsuke Takagi, Shinsuke Takagi
Tetrahedron Letters   59(6) 528-531   Feb 2018   [Refereed]
© 2017 Elsevier Ltd A novel light harvesting system that captures long-wavelength light of sunlight by the use of hole transfer was newly investigated. Ga phthalocyanine(GaIIITMAPc4+(D)) and Ru porphyrin(RuIIDMPyMP2+(A)) co-adsorbed reaction syste...
Nana Kudo, Takamasa Tsukamoto, Daiki Tokieda, Tetsuya Shimada, Tetsuya Shimada, Shinsuke Takagi, Shinsuke Takagi
Chemistry Letters   47 636-639   Jan 2018
© 2018 The Chemical Society of Japan. We investigated the fluorescence enhancement behavior of AIE (Aggregation Induced Emission) active dyes on a clay nanosheet. Judging from their adsorption observation on the clay in water, the factor for the f...
Amane Sonotani, Keito Sano, Shouta Wakayama, Tetsuya Shimada, Shinsuke Takagi, Shinsuke Takagi
Chemistry Letters   47 803-805   Jan 2018
© 2018 The Chemical Society of Japan. A photoelectrode composed of Zn-porphyrin dye and semiconductor titania nanosheets (TNS, Ti0.89O2) where Zn-porphyrin was densely adsorbed without aggregation was fabricated. Efficient electron injection from ...
Ryosuke Nakazato, Tetsuya Shimada, Tetsuya Shimada, Yuta Ohtani, Tamao Ishida, Tamao Ishida, Tamao Ishida, Shinsuke Takagi, Shinsuke Takagi
Tetrahedron Letters      Jan 2018   [Refereed]
© 2018 The adsorption and photochemical behavior of 4,4′-bipyridine (BPy) on an exfoliated single montmorillonite nano-sheet (MtNS) was investigated in water. Under the appropriate conditions, BPy was adsorbed on the MtNS as a monomer state. BPy e...
Mutsumi Hirose, Fuyuki Ito, Tetsuya Shimada, Shinsuke Takagi, Ryo Sasai, Tomohiko Okada
Langmuir   33 13515-13521   Nov 2017
© 2017 American Chemical Society. A β-diketone dye was packed into the two-dimensional nanospace of a synthetic smectite (Sumecton SA), which is a cation-exchangeable layered silicate, to induce strong emission owing to molecular packing of the dy...
Daiki Morimoto, Haruya Yoshida, Keita Sato, Kenji Saito, Masayuki Yagi, Shinsuke Takagi, Tatsuto Yui
Langmuir   33 3680-3684   Apr 2017
© 2017 American Chemical Society. A novel type of energy donor-acceptor system on a clay surface has been prepared. The energy transfer between an energy-donating cationic pyrene derivative (An-Py2+) and an energy-accepting tris(bipyridine)rutheni...
Daiki Tokieda, Takamasa Tsukamoto, Takamasa Tsukamoto, Yohei Ishida, Yohei Ishida, Hiroyuki Ichihara, Tetsuya Shimada, Shinsuke Takagi
Journal of Photochemistry and Photobiology A: Chemistry   339 67-79   Apr 2017
© 2017 Elsevier B.V. We have been investigating complexes composed of nano-sheet with anionic charges such as clay nanosheets and molecules such as cationic organic dyes. Photochemical properties of organic dyes are much affected by the complex fo...
Daiki Morimoto, Keita Sato, Kenji Saito, Masayuki Yagi, Shinsuke Takagi, Tatsuto Yui
Journal of Photochemistry and Photobiology A: Chemistry   337 112-117   Mar 2017
© 2017 Elsevier B.V. A novel type of trimethylanilinium-substituted pyrene derivative, 1,6-di(N,N,N-trimethylanilinium-4-yl)pyrene 2I−(An–Py2+), was synthesized. An–Py2+exhibits strong emission with a high-emission quantum yield (approximately 90%...
Yuta Ohtani, Shintaro Kawaguchi, Tetsuya Shimada, Shinsuke Takagi
Journal of Physical Chemistry C   121 2052-2058   Feb 2017
© 2017 American Chemical Society. Energy transfer among three dye components, namely, p-2,4,5,7-tetrakis(N-methylpyridinium-4-yl)-6-potassium-oxy-3-fluorone (Fluorone), meso-tetra(N-methyl-3-pyridyl) porphine (m-TMPyP), and meso-tetra(N-methyl-4-p...
Daichi Tatsumi, Takamasa Tsukamoto, Takamasa Tsukamoto, Ryou Honna, Shota Hoshino, Tetsuya Shimada, Shinsuke Takagi
Chemistry Letters   46 1311-1314   Jan 2017
© 2017 The Chemical Society of Japan. Photochemical oxygenation reaction of cyclohexene sensitized by two types of Ru(II)-porphyrin complexes was investigated on the inorganic surface. RuIIDMPyP2+is a standard and simple cationic porphyrin, wherea...
R. Sasai, Y. Kato, W. Soontornchaiyakul, H. Usami, A. Masumori, W. Norimatsu, T. Fujimura, T. Fujimura, S. Takagi, S. Takagi
Physical Chemistry Chemical Physics   19 5611-5616   Jan 2017
© 2017 the Owner Societies. The well-known layer-by-layer (LbL) method can be used to prepare solid thin films with a controlled electron transfer direction by appropriately stacking metal oxide nanosheets and functional organic ions. In this stud...
Amane Sonotani, Tetsuya Shimada, Tetsuya Shimada, Shinsuke Takagi, Shinsuke Takagi
Chemistry Letters   46 499-501   Jan 2017
© 2017 The Chemical Society of Japan. Lepidocrocite-type titania nanosheets (TNSs) with composition Ti0.89O2were newly designed and synthesized. The densely packed TNS surface on glass substrates (TNS-LB) was fabricated by the Langmuir-Blodgett me...
Yu Nabetani, Hazuki Takamura, Akino Uchikoshi, Syed Zahid Hassan, Tetsuya Shimada, Shinsuke Takagi, Hiroshi Tachibana, Dai Masui, Zhiwei Tong, Zhiwei Tong, Haruo Inoue
Nanoscale   8 12289-12293   Jun 2016
© 2016 The Royal Society of Chemistry. Photo-responsive nanoscrolls can be successfully fabricated by mixing a polyfluoroalkyl azobenzene derivative and a niobate nanosheet, which is exfoliated from potassium hexaniobate. In this study, we have fo...
Miharu Eguchi, Tetsuya Shimada, Haruo Inoue, Shinsuke Takagi
Journal of Physical Chemistry C   120 7428-7434   Apr 2016
© 2016 American Chemical Society. In a mixed solvent of water and dimethylformamide (DMF), porphyrin molecules have two types of orientation, tilted and parallel, toward a surface of silicate nanosheet. In the solvent, tilted species have lower en...
Takamasa Tsukamoto, Takamasa Tsukamoto, Tetsuya Shimada, Shinsuke Takagi
ACS Applied Materials and Interfaces   8 7522-7528   Mar 2016
© 2016 American Chemical Society. Two types of +3-charged subporphyrin derivatives with m- and p-methylpyridinium as the meso-aryl substituents were designed and synthesized. Their photophysical properties with and without anionic saponite clay we...
Takamasa Tsukamoto, Takamasa Tsukamoto, Elamparuthi Ramasamy, Tetsuya Shimada, Shinsuke Takagi, V. Ramamurthy
Langmuir   32 2920-2927   Mar 2016
© 2016 American Chemical Society. Three coumarin derivatives (7-propoxy coumarin, coumarin-480, and coumarin-540a, 2, 3, and 4, respectively) having different absorption and emission spectra were encapsulated within a water-soluble organic capsule...
Yohei Ishida, Tetsuya Shimada, Tetsuya Shimada, Elamparuthi Ramasamy, Vaidhyanathan Ramamurthy, Shinsuke Takagi, Shinsuke Takagi
Photochemical and Photobiological Sciences   15 959-963   Jan 2016
© The Royal Society of Chemistry and Owner Societies 2016. Stable room-temperature phosphorescence of guest aromatic molecules was achieved by the effective suppression of oxygen quenching. The organic capsule (first wall) suppressed static oxygen...
Takuya Fujimura, Takuya Fujimura, Elamparuthi Ramasamy, Yohei Ishida, Tetsuya Shimada, Tetsuya Shimada, Shinsuke Takagi, Shinsuke Takagi, Vaidhyanathan Ramamurthy
Physical Chemistry Chemical Physics   18 5404-5411   Jan 2016
© 2016 the Owner Societies. To achieve the goal of energy transfer and subsequent electron transfer across three molecules, a phenomenon often utilized in artificial light harvesting systems, we have assembled a light absorber (that also serves as...
Yuta Ohtani, Hiromasa Nishinaka, Shota Hoshino, Tetsuya Shimada, Shinsuke Takagi
Journal of Photochemistry and Photobiology A: Chemistry   313 15-18   Dec 2015
© 2015 Elsevier B.V. All rights reserved. Anisotropic energy transfer system was successfully prepared by a combination of Langmuir-Blodgett (LB) technique and Size-matching effect. Tetrakis(1-methylpyridinium-3-yl) porphyrin (m-TMPyP) and tetraki...
Keita Sato, Satomi Hagiwara, Daiki Morimoto, Kenji Saito, Masayuki Yagi, Shinsuke Takagi, Tatsuto Yui
Journal of Photochemistry and Photobiology A: Chemistry   313 9-14   Dec 2015
© 2015 Elsevier B.V. All rights reserved. Tetracationic pyrene derivatives (Py4+) and dicationic tris(bipyridine)ruthenium(II) (Ru2+) were hybridized on a synthetic clay (SSA) surface; the hybrid is denoted as Py4+/Ru2+/SSA. The photochemical prop...
Takuya Fujimura, Takuya Fujimura, Takuya Fujimura, Yuma Yoshida, Haruo Inoue, Haruo Inoue, Tetsuya Shimada, Tetsuya Shimada, Shinsuke Takagi, Shinsuke Takagi
Langmuir   31 9142-9147   Aug 2015
© 2015 American Chemical Society. We examined the deposition of gold clusters through the reduction of a gold precursor sensitized by nonaggregated, assembled porphyrin molecules on an inorganic layered material surface in order to develop a novel...
Yuta Ohtani, Yuta Ohtani, Tetsuya Shimada, Shinsuke Takagi
Journal of Physical Chemistry C   119 18896-18902   Aug 2015
© 2015 American Chemical Society. We investigated a reaction involving photochemical energy transfer between a cationic xanthene derivative (Flu(D)) and a cationic porphyrin (Por(A)) with an energy migration functionality, which is crucial for eff...
Narumi Sato, Takuya Fujimura, Takuya Fujimura, Tetsuya Shimada, Tetsuya Shimada, Tadaaki Tani, Shinsuke Takagi, Shinsuke Takagi
Tetrahedron Letters   56 2902-2905   May 2015
© 2015 Elsevier Ltd. All rights reserved. Adsorption, aggregation, and photochemical behavior of a cationic cyanine dye (5,5′,6,6′-tetrachloro-1,1′,3,3′-tetraethylbenzimidazolylcarbo-cyanine chloride (JC-1)) on an inorganic layered material were e...
Keita Sato, Kazuki Matsubara, Satomi Hagiwara, Kenji Saito, Masayuki Yagi, Shinsuke Takagi, Tatsuto Yui
Langmuir   31 27-31   Jan 2015
© 2014 American Chemical Society. Tetra-cationic pyrene derivative (Py4+) and tris(bipyridine)ruthenium(II) (Ru2+) were hybridized onto the surface of a synthesized clay. We observed the remarkable stimulation of excited Py4+emission quenching on ...
Takamasa Tsukamoto, Takamasa Tsukamoto, Tetsuya Shimada, Tetsuya Shimada, Tsutomu Shiragami, Shinsuke Takagi, Shinsuke Takagi
Bulletin of the Chemical Society of Japan   88 578-583   Jan 2015
© 2015 The Chemical Society of Japan. Photochemical chlorination and oxygenation reaction of cyclohexene sensitized by gallium(III) porphyrinclay hybrid compound was investigated. Gallium(III) porphyrin did not aggregate on the clay surface, and t...
T. Tsukamoto, T. Tsukamoto, T. Shimada, S. Takagi
RSC Advances   5 8479-8485   Jan 2015
© The Royal Society of Chemistry. Four types of meso-phenyl or pyridyl-substituted monocationic antimony(v) porphyrin derivatives (SbVPors) - 5,10,15,20-tetraphenyl; 5,10,15-triphenyl-20-mono(4-pyridyl); 5,15-diphenyl-10,20-di(4-pyridyl); and 5,10...
Yohei Ishida, Yohei Ishida, Yohei Ishida, Revathy Kulasekharan, Tetsuya Shimada, V. Ramamurthy, Shinsuke Takagi
Journal of Physical Chemistry C   118 10198-10203   May 2014
We report the occurrence of efficient energy transfer reaction in a novel host-guest assembly composed of an anionic clay nanosheet, cationic porphyrin, and neutral aromatic molecule encapsulated within a cationic organic cavitand. The supramolecu...
Youki Kou, Yu Nabetani, Yu Nabetani, Dai Masui, Dai Masui, Tetsuya Shimada, Tetsuya Shimada, Shinsuke Takagi, Shinsuke Takagi, Hiroshi Tachibana, Hiroshi Tachibana, Haruo Inoue, Haruo Inoue
Journal of the American Chemical Society   136 6021-6030   Apr 2014
Photochemical CO2reduction sensitized by rhenium-bipyridyl complexes has been studied through multiple approaches during the past several decades. However, a key reaction intermediate, the CO2-coordinated Re-bipyridyl complex, which should govern ...
Miharu Eguchi, Miharu Eguchi, Yo Watanabe, Yuta Ohtani, Tetsuya Shimada, Shinsuke Takagi
Tetrahedron Letters   55 2662-2666   Apr 2014
Photochemical energy transfer was examined on the flat clay surface. By the change of surrounding atmosphere, the molecular adsorption orientation angle of dyes can be modulated. It is turned out that the energy transfer efficiency between dyes ca...
Yuta Ohtani, Yohei Ishida, Yohei Ishida, Yuka Ando, Hiroshi Tachibana, Tetsuya Shimada, Tetsuya Shimada, Shinsuke Takagi, Shinsuke Takagi
Tetrahedron Letters   55 1024-1027   Jan 2014
Novel tetra-cationic xanthene derivative (Flu) was synthesized. Its adsorption and photochemical behaviors on the clay surface were investigated. Fluorescence quantum yield (φf) and fluorescence lifetime were 0.50 and 2.9 ns for Flu/clay complex. ...
Tetsuro Umemoto, Yuta Ohtani, Takamasa Tsukamoto, Tetsuya Shimada, Shinsuke Takagi
Chemical Communications   50 314-316   Jan 2014
The photoisomerization behaviour of a dicationic azobenzene derivative on the inorganic surface was examined. The isomerization reaction was controlled by the charged array of the inorganic surface due to the "pinning effect" because of the electr...
Yohei Ishida, Tetsuya Shimada, Shinsuke Takagi, Shinsuke Takagi
Journal of Physical Chemistry C   118 20466-20471   Jan 2014
© 2014 American Chemical Society. This paper proposes a unique phenomenon of the strong enhancement in the fluorescence quantum yield (ψf) and the excited lifetime (τ) of tetra-cationic porphyrazine dye (Pz) upon a complexation with inorganic nano...
Minoru Nagashima, Takamasa Tsukamoto, Tetsuya Shimada, Tetsuya Shimada, Donald A. Tryk, Shinsuke Takagi, Shinsuke Takagi, Haruo Inoue, Haruo Inoue
Bulletin of the Chemical Society of Japan   87 1273-1277   Jan 2014
© 2014 The Chemical Society of Japan. Cationic polyfluorinated surfactants (CnF2n+1CONH(CH2)2N+(CH3)2(CH2)15CH3Br-; CnF (n = 1-3)) form reversed micelles in organic solvents such as toluene. The reversed micelle formation and their properties were...
Takahiro Yamamoto, Takuya Fujimura, Takuya Fujimura, Tetsuya Shimada, Shinsuke Takagi
Chemistry Letters   43 860-861   Jan 2014
The adsorption behavior of Cs+ with the modified mica was investigated in aqueous suspension, quantitatively. Phlogopite was used as typical mica. We newly found out that phlogopite treated with BaCl2 for a short period (2 h) exhibits ability to a...
Saki Konno, Takuya Fujimura, Takuya Fujimura, Yuta Otani, Tetsuya Shimada, Haruo Inoue, Shinsuke Takagi, Shinsuke Takagi
Journal of Physical Chemistry C   118 20504-20510   Jan 2014
© 2014 American Chemical Society. Microstructures of the porphyrin/viologen monolayer on an anionic clay surface (synthetic saponite) were investigated by the observation of photochemical behavior of porphyrin. Fluorescence behaviors of porphyrin-...
Kazunori Kurimoto, Tatsufumi Yamazaki, Yoshiyuki Suzuri, Yu Nabetani, Satomi Onuki, Shinsuke Takagi, Tetsuya Shimada, Hiroshi Tachibana, Haruo Inoue
Photochemical and Photobiological Sciences   13 154-156   Jan 2014
Hydrogen evolution coupled with the photochemical oxygenation of cyclohexene with water was observed in the system sensitized by Sn(iv)-porphyrin adsorbed on Pt loaded TiO<inf>2</inf> nano-particles in aqueous acetonitrile solution upon visible li...
Youki Kou, Shogo Nakatani, Gen Sunagawa, Yasuyuki Tachikawa, Dai Masui, Tetsuya Shimada, Shinsuke Takagi, Donald A. Tryk, Yu Nabetani, Hiroshi Tachibana, Haruo Inoue
Journal of Catalysis   310 57-66   Jan 2014
Visible light-induced, two-electron reduction of carbon dioxide to carbon monoxide, catalyzed by a newly synthesized metal complex dyad composed of a zinc porphyrin as a light-harvesting sensitizer and a rhenium bipyridyl complex as a catalytic mo...
Takamasa Tsukamoto, Tetsuya Shimada, Shinsuke Takagi, Shinsuke Takagi
Journal of Physical Chemistry A   117 7823-7832   Aug 2013
Three types of mono-, tri-, and penta-cationic antimony(V) porphyrin derivatives (SbVPors) were synthesized, and their photochemical properties on the anionic clay were systematically investigated. SbVPor derivatives are dihydroxo(5,10,15,20-tetra...
Alexander Èeklovski, Shinsuke Takagi
Central European Journal of Chemistry   11 1132-1136   Jul 2013
This study was focused on the investigation of novel hybrid organo/inorganic systems for oxygen sensing applications. As a host material, a synthetic clay mineral Sumecton SA was chosen, while, as guest materials, metalloporphyrins containing Pt(I...
Miharu Eguchi, Miharu Eguchi, Tetsuya Shimada, Donald A. Tryk, Haruo Inoue, Shinsuke Takagi
Journal of Physical Chemistry C   117 9245-9251   May 2013
The adsorption orientational behavior of dicationic porphyrins on clay surfaces in various solvents was examined. Addition of aprotic solvents to the aqueous solution containing the clay-porphyrin complex induced a large spectral shift to shorter ...
Yohei Ishida, Yohei Ishida, Tetsuya Shimada, Tetsuya Shimada, Shinsuke Takagi, Shinsuke Takagi
Journal of Physical Chemistry C   117 9154-9163   May 2013
This paper proposes an efficient artificial light-harvesting system in a host-guest assembly composed of functional dyes and inorganic nanosheet. Although we have already reported an efficient energy transfer between two types of porphyrin molecul...
Takuya Fujimura, Takuya Fujimura, Tetsuya Shimada, Satoshi Hamatani, Shingo Onodera, Ryo Sasai, Haruo Inoue, Shinsuke Takagi, Shinsuke Takagi
Langmuir   29 5060-5065   Apr 2013
Cationic porphyrin was successfully intercalated into transparent clay membrane by developing the new strategy for the sample preparation conditions. When water:ethanol = 1:2 (v:v) was used as solvent for porphyrin penetration process, high densit...
Yu Nabetani, Hazuki Takamura, Yuika Hayasaka, Shin Sasamoto, Yoshihiko Tanamura, Tetsuya Shimada, Dai Masui, Shinsuke Takagi, Hiroshi Tachibana, Zhiwei Tong, Haruo Inoue
Nanoscale   5 3182-3193   Apr 2013
From the viewpoint of developing photoresponsive supramolecular systems in microenvironments to exhibit more sophisticated photo-functions even at the macroscopic level, inorganic/organic hybrid compounds based on clay or niobate nanosheets as the...
Shinsuke Takagi, Shinsuke Takagi, Tetsuya Shimada, Yohei Ishida, Yohei Ishida, Takuya Fujimura, Takuya Fujimura, Dai Masui, Hiroshi Tachibana, Miharu Eguchi, Haruo Inoue
Langmuir   29 2108-2119   Feb 2013
We have been investigating complexes composed of nanolayered materials with anionic charges such as clay nanosheets and dye molecules such as cationic porphyrins. It was found that the structure of dye assembly on the layered materials can be effe...
Takamasa Tsukamoto, Tetsuya Shimada, Shinsuke Takagi, Shinsuke Takagi
Journal of Physical Chemistry C   117 2774-2779   Feb 2013
Two types of novel tricationic 1,3,5-triphenylbenzene (TPB) derivatives were synthesized. The TPB derivatives are 1,3,5-tris(N,N,N-trimethylanilinium-4- yl)benzene (TMAB) and 1,3,5-tris[(N-pyridinium)aniline-4-yl]benzene (TPAB). The photochemical ...
Yohei Ishida, Yohei Ishida, Revathy Kulasekharan, Tetsuya Shimada, Shinsuke Takagi, Shinsuke Takagi, V. Ramamurthy
Langmuir   29 1748-1753   Feb 2013
A supramolecular host-guest assembly composed of a cationic organic cavitand (host), neutral aromatic molecules (guests), and an anionic clay nanosheet has been prepared and demonstrated that in this arrangement efficient singlet-singlet energy tr...
Tetsuya Shimada, Satoshi Hamatani, Shingo Onodera, Yohei Ishida, Yohei Ishida, Haruo Inoue, Shinsuke Takagi, Shinsuke Takagi
Research on Chemical Intermediates   39 269-278   Jan 2013
Time-resolved fluorescence and steady-state spectroscopic measurements were performed with +4-charged cationic porphyrins adsorbed on an anionic-type clay (Sumecton SA; SSA) surface at a low molecular loading level (10 % vs. cation-exchange capaci...
Yohei Ishida, Yohei Ishida, Tetsuya Shimada, Hiroshi Tachibana, Haruo Inoue, Shinsuke Takagi, Shinsuke Takagi
Journal of Physical Chemistry A   116 12065-12072   Dec 2012
This paper proposes a novel methodology to improve noncollisional photochemical reactions such as Förster resonance energy transfer on solid surfaces. Since an excited guest molecule densely adsorbed on the solid surfaces is quenched by an unfavor...
Satomi Hagiwara, Yohei Ishida, Yohei Ishida, Dai Masui, Tetsuya Shimada, Shinsuke Takagi
Tetrahedron Letters   53 5800-5802   Oct 2012
Novel tetracationic pyrene derivative (1,3,6,8-tetrakis(N-methylpyridinium- 4-yl)pyrene, Py4+) was synthesized. Photochemical properties such as fluorescence quantum yield and fluorescence lifetime were observed for Py4+and Py4+/clay complexes. Ju...
Yohei Ishida, Yohei Ishida, Dai Masui, Tetsuya Shimada, Hiroshi Tachibana, Haruo Inoue, Shinsuke Takagi, Shinsuke Takagi
Journal of Physical Chemistry C   116 7879-7885   Apr 2012
The mechanism inducing the unique absorption spectral shifts of porphyrin molecules upon adsorption on the clay surface was experimentally confirmed to be the flattening of the meso substituent with respect to the plane of the porphyrin ring. We i...
Yohei Ishida, Yohei Ishida, Dai Masui, Hiroshi Tachibana, Haruo Inoue, Tetsuya Shimada, Shinsuke Takagi, Shinsuke Takagi
ACS Applied Materials and Interfaces   4 811-816   Feb 2012
The microadsorption structure of two kinds of porphyrin molecules on an anionic clay surface was investigated by photochemical energy transfer reaction. Three procedures were examined for the preparation of the clay/porphyrin complexes: (i) coadso...
T. Eyama, Y. Yogo, T. Fujimura, T. Tsukamoto, D. Masui, T. Shimada, H. Tachibana, H. Inoue, S. Takagi, S. Takagi
Clay Minerals   47 243-250   Jan 2012
Zwitterionic porphyrin (tetrakis {4-(2-carboxyethyl)pyridinio}porphyrin (TPyCP)) with four pyridinium and carboxyl groups in the molecule was synthesized. The adsorption behaviour of TPyCP on the montmorillonite clay surface was examined in an aqu...
Haruo Inoue, Haruo Inoue, Tetsuya Shimada, Youki Kou, Yu Nabetani, Dai Masui, Shinsuke Takagi, Hiroshi Tachibana
ChemSusChem   4 173-179   Feb 2011
The state-of-the-art of research on artificial photosynthesis is briefly reviewed. Insights into how Nature takes electrons from water, the photon-flux density of sunlight, the time scale for the arrival of the next photon (electron-hole) at the o...
Shigeaki Funyu, Miki Kinai, Dai Masui, Shinsuke Takagi, Tetsuya Shimada, Hiroshi Tachibana, Haruo Inoue, Haruo Inoue
Photochemical and Photobiological Sciences   9 931-936   Jul 2010
Two key reaction intermediates in the photochemical oxygenation of alkene sensitized by carbonyl-coordinated ruthenium(ii)-porphyrin complex, with water acting both as an electron and oxygen atom donor, are postulated. Under the low concentration ...
Shinsuke Takagi, Shinsuke Takagi, Tetsuya Shimada, Dai Masui, Hiroshi Tachibana, Yohei Ishida, Donald A. Tryk, Haruo Inoue
Langmuir   26 4639-4641   Apr 2010
A novel optically transparent membrane composed of porphyrin-clay mineral complexes was developed. Reversible solvatochromism behavior of the membrane was successfully observed, due to an orientation change of porphyrin in the clay interlayer spac...
Kuniomi Kiyosawa, Naoki Shiraishi, Tetsuya Shimada, Tetsuya Shimada, Dai Masui, Dai Masui, Hiroshi Tachibana, Hiroshi Tachibana, Shinsuke Takagi, Shinsuke Takagi, Osamu Ishitani, Osamu Ishitani, Donald A. Tryk, Donald A. Tryk, Haruo Inoue, Haruo Inoue
Journal of Physical Chemistry C   113 11667-11673   Jul 2009
fac-Re(bpy)(CO)3Cl (bpy = 2,2'-bipyridine) and similar complexes are known to act as photocatalysts for the reduction of CO2 to CO in the presence of electron donors. However, these complexes do not have significant absorption in the visible regio...
Zhiwei Tong, Zhiwei Tong, Shin Sasamoto, Tetsuya Shimada, Shinsuke Takagi, Hiroshi Tachibana, Xiaobo Zhang, Donald A. Tryk, Haruo Inoue, Haruo Inoue
Journal of Materials Chemistry   18(39) 4641-4645   Oct 2008
A novel photofunctional material composed of polyfluorinated cationic azobenzene and layered potassium titanoniobate was synthesized and its photochemical behavior was investigated. Although polyfluorinated cationic azobenzene could not be interca...
Miharu Eguchi, Miharu Eguchi, Hiroshi Tachibana, Shinsuke Takagi, Donald A. Tryk, Haruo Inoue, Haruo Inoue
Bulletin of the Chemical Society of Japan   80(7) 1350-1356   Dec 2007
Complexes formed with synthetic clay minerals and dicationic and tetracationic porphyrins were prepared. The Soret bands of the multicationic porphyrins shifted to longer wavelength upon the formation of a complex with clay. The clay sheets themse...
Shinsuke Takagi, Miharu Eguchi, Tetsuya Shimada, Satoshi Hamatani, Haruo Inoue, Haruo Inoue
Research on Chemical Intermediates   33 177-189   Jan 2007
Photochemical energy transfer of non-aggregated cationic porphyrins on an anionic-type clay (Smecton SA) surface was investigated. The efficiency of energy transfer and excited-state quenching in the absence of energy transfer were evaluated at va...
Miharu Eguchi, Hiroshi Tachibana, Shinsuke Takagi, Haruo Inoue, Haruo Inoue
Research on Chemical Intermediates   33 191-200   Jan 2007
The intercalation behavior of cationic porphyrin derivatives within the interlayer spaces of nano-layered clay minerals has been investigated. The porphyrins were successfully intercalated by the newly adopted method of repeated freeze-thaw cycles...
Tsunehisa Kimura, Taichi Uemura, Takumasa Kimura, Shinsuke Takagi, Haruo Inoue
Macromolecular Symposia   242 120-125   Dec 2006
Rhodamine B was intercalated in interlayer spaces of Somasif Me-100, a synthetic mica, and the obtained rhodamine B/Somasif hybrid was suspended in a UV-curable resin precursor. Then, the suspension was subjected to an applied rotating magnetic fi...
Shinsuke Takagi, Miharu Eguchi, Miharu Eguchi, Donald A. Tryk, Haruo Inoue, Haruo Inoue
Journal of Photochemistry and Photobiology C: Photochemistry Reviews   7 104-126   Oct 2006
Porphyrin derivatives are known as useful functional dyes. Porphyrin derivatives exhibit various properties in complexes with inorganic host materials that are much different from those in homogeneous solutions. In this paper, the structure and ph...
Tsutomu Shiragami, Yuta Mori, Jin Matsumoto, Shinsuke Takagi, Haruo Inoue, Masahide Yasuda
Colloids and Surfaces A: Physicochemical and Engineering Aspects   284-285 284-289   Aug 2006
Tetraphenylporphyrinatoantimony(V) dye (1)-adsorbed cation-exchangeable smectite nano-clay sheets (Sumecton SA, SSA) films were prepared on a glass plate modified with ammonium cation (MAS-glass). The dispersibility of SbTPP-adsorbed SSA sheets st...
Shinsuke Takagi, Miharu Eguchi, Donald A. Tryk, Haruo Inoue
Langmuir   22 1406-1408   Feb 2006
A novel energy-transfer system involving nonaggregated cationic porphyrins adsorbed on an anionic-type clay surface and the electron-transfer reaction that occurs after light harvesting are described. In the clay-porphyrin complexes, photochemical...
Zhiwei Tong, Shinsuke Takagi, Tetsuya Shimada, Hiroshi Tachibana, Haruo Inoue, Haruo Inoue
Journal of the American Chemical Society   128 684-685   Jan 2006
The first successful synthesis of photoresponsive multilayer spiral nanotubes by the introduction of polyfluorinate cationic azobenzene derivative, trans-[2-(2,2,3,3,4,4,4-heptafluorobutylamino)ethyl]-{2-[4-(4-hexyphenylazo)-phenoxy]ethyl}dimethyl...
Miharu Eguchi, Miharu Eguchi, Shinsuke Takagi, Shinsuke Takagi, Haruo Inoue, Haruo Inoue
Chemistry Letters   35 14-15   Jan 2006
The orientations of cationic porphyrins on a clay surface were found to be successfully controlled by solvent polarity. The orientational change was directly observed with the interface spectrometer equipped with a quartz waveguide system. Tetraca...
Tsutomu Shiragami, Keiko Nabeshima, Satoko Nakashima, Jin Matsumoto, Shinsuke Takagi, Haruo Inoue, Masahide Yasuda
Bulletin of the Chemical Society of Japan   78 2251-2258   Dec 2005
Novel metalloporphyrin-clay composites were prepared from a synthetic clay (Sumecton SA: SSA) and cationic tetraphenylporphyrinatoantimony(V) bromide (SbTPP, 1-4) having various axial ligands. Both the crystal structure for SbTPP-SSA composites an...
Zhiwei Tong, Shinsuke Takagi, Hiroshi Tachibana, Katsuhiko Takagi, Haruo Inoue, Haruo Inoue
Journal of Physical Chemistry B   109, 21612-21617. 21612-21617   Nov 2005
A unique guest-guest ion exchange method was developed for preparing a thin film of a nano-layered K4-Nb6O17·H 2O that possesses both (1) optical transparency and (2) ion-exchangeability under ambient conditions without calcination at high tempera...
Zhiwei Tong, Shinsuke Takagi, Tetsuya Shimada, Hiroshi Tachibana, Haruo Inoue, Haruo Inoue
Chemistry Letters   34, 1406-1407. 1406-1407   Oct 2005
Intercalation of tris(2,2′-bipyridme)ruthenium(II), Ru(bpy) 32+, into a layered perovskite derived from Aurivillius phase Bi2SrTa2O9 was successfully achieved by a guest ion-exchange method using n-C6H13NH 3+-SrTa2O7 hybrid compound as an intermed...
Haruo Inoue, Shigeaki Funyu, Yutaka Shimada, Shinsuke Takagi
Pure and Applied Chemistry   77 1019-1033   Jun 2005
Recent progress in the field of artificial photosynthesis is reviewed. Among various approaches to oxidizing the water molecule, attention has been focused on the two-electron chemical conversion processes mediated by metallo-porphyrins upon visib...
Zhiwei Tong, Guozhen Zhang, Shinsuke Takagi, Tetsuya Shimada, Hiroshi Tachibana, Haruo Inoue, Haruo Inoue
Chemistry Letters   34, 632-633. 632-633   May 2005
An intercalation compound of the layered perovskite, K2La2Ti3O10, with 5,10,15,20-tetrakis(N- methylpyridinium-4-yl)-21H,23H-porphin (TMPyP4+), as the first example of a large molecule intercalation into this perovskite, was successfully prepared ...
Zhiwei Tong, Shinsuke Takagi, Hiroshi Tachibana, Katsuhiko Takagi, Haruo Inoue, Haruo Inoue
Chemistry Letters   34, 608-609. 608-609   Apr 2005
A unique guest-guest ion exchange method was developed for preparing a thin film of a nano-layered K4Nb6O17·3H2O that possesses both 1) optical transparency and 2) ion-exchangeability, the first example of such a material. An optically transparent...
Makoto Sumitani, Makoto Sumitani, Shinsuke Takagi, Shinsuke Takagi, Yoshihiko Tanamura, Yoshihiko Tanamura, Haruo Inoue, Haruo Inoue
Analytical Sciences   2004, 20, 1153-1157 1153-1157   Aug 2004
An organic/inorganic hybrid compound consisting of methylene blue, a cationic surfactant and a reductant intercalated into saponite was found to serve as an oxygen indicator that changes color in the presence of oxygen. A mixture of a blue colored...
Miharu Eguchi, Shinsuke Takagi, Hiroshi Tachibana, Haruo Inoue, Haruo Inoue
Journal of Physics and Chemistry of Solids   2004, 65, 403-407 403-407   Feb 2004
Novel inorganic/organic hybrids formed from cationic porphyrins and synthetic clay were investigated. Di-, tri- and tetra-cationic charged porphyrins with different distances between adjacent cationic sites within the molecules were incorporated i...
Shigeaki Funyu, Shigeaki Funyu, Takehiko Isobe, Takehiko Isobe, Shinsuke Takagi, Shinsuke Takagi, Donald A. Tryk, Donald A. Tryk, Haruo Inoue, Haruo Inoue
Journal of the American Chemical Society   125, 5734-5740. 2003, 125, 5734-5740. 5734-5740   May 2003
Visible light irradiation of a reaction mixture of carbonyl-coordinated tetra(2,4,6-trimethyl)-phenylporphyrinatoruthenium(II) (RuIITMP(CO)) as a photosensitizer, hexachloroplatinate(IV) as an electron acceptor, and an alkene in alkaline aqueous a...
Lucian A. Lucia, Lucian A. Lucia, Tatsuto Yui, Ryo Sasai, Shinsuke Takagi, Katsuhiko Takagi, Hirohisa Yoshida, David G. Whitten, David G. Whitten, Haruo Inoue, Haruo Inoue
Journal of Physical Chemistry B   107, 3789-3797. 3789-3797   Jan 2003
Polyfluorinated surfactant (CnF2n+1CONH(CH2)2N+(CH3)2C16H33Br-; designated as CnF-S, where n = 1-3)/ clay hybrid compounds have been shown to provide polyfluorinated microcavities in the clay interlayers with molecular dimensions. The aggregation ...
Shinsuke Takagi, Donald A. Tryk, Donald A. Tryk, Haruo Inoue, Haruo Inoue
Journal of Physical Chemistry B   106, 5455-5460 5455-5460   May 2002
Photochemical energy transfer of cationic porphyrins on an "anionic-type" clay (Sumecton SA) surface was investigated. Two types of complexes were formed between the cationic porphyrin and the "anionic-type" clay depending on the conditions. With ...
Shinsuke Takagi, Tetsuya Shimada, Miharu Eguchi, Tatsuto Yui, Hirohisa Yoshida, Donald A. Tryk, Haruo Inoue, Haruo Inoue
Langmuir   18, 2265-2272 2265-2272   Mar 2002
Several inorganic-organic hybrid complexes were synthesized from a synthetic clay (Sumecton SA) and cationic porphyrins (+4 charge). In the clay-porphyrin complexes, the λmax values of the Soret bands of the porphyrins were shifted to longer wavel...
Sundararajan Uppili, Shinsuke Takagi, R. B. Sunoj, P. Lakshminarasimhan, J. Chandrasekhar, V. Ramamurthy
Tetrahedron Letters   42(11), 2079-2083. 2079-2083   Mar 2001
The nature of the lowest triplet state of enones is altered by the cations present within Y zeolites. Alkali metal ions, such as Li+, are predicted to interact with the carbonyl unit of enones in a collinear fashion and significantly lower both th...
Shinsuke Takagi, Tetsuya Shimada, Tatsuto Yui, Haruo Inoue
Chemistry Letters   128-129 128-129   Jan 2001
Adsorption of the +4 charged cationic porphyrins onto an artificially synthesized smectite was studied. Porphyrin molecules adsorb on the clay sheet with high density to neutralize all the minus charges of the clay surface without aggregation by a...
Yorihisa Yamaguchi, Tatsuto Yui, Shinsuke Takagi, Tetsuya Shimada, Haruo Inoue
Chemistry Letters   644-645 644-645   Jan 2001
An anionic metalloporphyrin (Zn(II)TCPP4-) was successfully co-intercalated into the layered oxide K4Nb6O17with cationic surfactant (CTAB). Photochemical injection of electrons into the niobate layer was observed.
Shinsuke Takagi, Hidenobu Morimoto, Tsutomu Shiragami, Haruo Inoue
Research on Chemical Intermediates   26, 171-183 171-183   Jan 2000
Visible light irradiation of a reaction mixture containing dihydroxy coordinated tetraphenylporphyrinatotin(IV), cyclohexene and potassium hexachloroplatinate induced oxygenation of the cyclohexene under degassed conditions. In the reaction system...
ポルフィリン-層状化合物の構造と光化学特性
光化学   31(3) 197   2000
Tadatoshi Ohmachi, Hiromi Kusaka, Shinsuke Takagi, Haruo Inoue
Nippon Kagaku Kaishi / Chemical Society of Japan - Chemistry and Industrial Chemistry Journal   456   Dec 1999
Vapor phase adsorption behavior of hexane, benzene, ethanol, and water to films of polyfluorinated surfactants, N-methyl-N,N-dioctadecyl(3-perfluoroacylamino)propylammonium bromide having three different number of carbon n=1, 2, 3 in the perfluoro...
Yoji Kameo, Seriya Takahashi, Marianne Krieg-Kowald, Tadatoshi Ohmachi, Shinsuke Takagi, Haruo Inoue
Journal of Physical Chemistry B   103, 9562 9562-9568   Nov 1999
Three novel polyfluorinated cationic surfactants and the corresponding three hydrocarbon analogues were synthesized. All of the surfactants formed globular micelles in water. The micellar formation was monitored by five independent methods. The re...
Hiromi Kusaka, Masahiro Uno, Marianne Krieg-Kowald, Marianne Krieg-Kowald, Tadatoshi Ohmachi, Shunichi Kidokoro, Tatsuto Yui, Shinsuke Takagi, Haruo Inoue
Physical Chemistry Chemical Physics   1, 3135 3135-3140   Jul 1999
Three novel polyfluorinated cationic surfactants having a short perfluoroacyl group and double long alkyl chains, and three corresponding hydrocarbon analogues were synthesized. All of the surfactants formed small unilamellar vesicles in water upo...
Shinsuke Takagi, Minako Suzuki, Tsutomu Shiragami, Haruo Inoue
Journal of the American Chemical Society   119, 8712-8713 8712-8713   Oct 1997
「光に関する教科書、専門書など」
光化学   20、102-106.    1995
Shinsuke Takagi, Takanobu Okamoto, Tsutomu Shiragami, Haruo Inoue
Journal of Organic Chemistry   59, 7373-7378 7373-7378   Dec 1994
When visible light (λ= 420 nm) was irradiated to a reaction mixture involving tetraphenylporphyrinatoantimony(V) 1 as a sensitizer, methylviologen as an electron acceptor and triphenylphosphine (PPh3) as an electron donor in acetonitrile-water (95...

Misc

 
The enhanced quenching in the dye aggregates (Review in Japanese)
Kagaku(Kagaku Dojin)   2004、59、60-61    2004
Ordered orientation of porphyrin molecules on solid surfaces. (in Japanese) Shinsuke TAKAGI
Kagaku to Kogyo (Tokyo, Japan)   (2002), 55(9), 1026    2002
Please see the list in Japanese for the paper after 2005.

Books etc

 
A part of [Dictionary on Chemistry and Photochemistry] (in Japanese)
Maruzen(JAPAN)   2002   
Molecular and Supramolecular Photochemistry of Porphyrins and Melalloporphyris
Multimetallic and Macromolecular Inorganic Photochemistry, Marcel Dekker   1999   
材料化学の最前線
東京都立大学工業化学科分子応用化学研究会編、一部執筆 講談社   1998   

Works

 
Photochemical Reactions in Zeolites
1999 - 2000

Research Grants & Projects

 
Photochemistry of High Valent Metalloporphyrins
Research of layered materials